CVE-2020-11993 (GCVE-0-2020-11993)

Vulnerability from cvelistv5 – Published: 2020-08-07 15:32 – Updated: 2024-08-04 11:48
VLAI
Summary
Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • Push Diary Crash on Specifically Crafted HTTP/2 Header
Assigner
References
URL Tags
https://httpd.apache.org/security/vulnerabilities… x_refsource_MISC
https://security.gentoo.org/glsa/202008-04 vendor-advisoryx_refsource_GENTOO
https://lists.apache.org/thread.html/r9e9f1a76097… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r5debe8f8272… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r623de9b2b24… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4458-1/ vendor-advisoryx_refsource_UBUNTU
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac… vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://www.debian.org/security/2020/dsa-4757 vendor-advisoryx_refsource_DEBIAN
https://www.oracle.com/security-alerts/cpuoct2020.html x_refsource_MISC
https://security.netapp.com/advisory/ntap-2020081… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://www.oracle.com/security-alerts/cpujan2021.html x_refsource_MISC
http://packetstormsecurity.com/files/160393/Apach… x_refsource_MISC
https://lists.apache.org/thread.html/rf6449464fd8… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r06f0d87ebb6… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r09bb998baee… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rc998b18880d… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rdf3e5d0a5f5… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9f93cf6dde3… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r3c5c3104813… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rf71eb428714… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r2c6083f6a20… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r76142b8c511… mailing-listx_refsource_MLIST
Impacted products
Vendor Product Version
n/a Apache HTTP Server Affected: 2.4.20 to 2.4.43
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T11:48:57.265Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993"
          },
          {
            "name": "GLSA-202008-04",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202008-04"
          },
          {
            "name": "[httpd-dev] 20200808 Security announcements for CVE-2020-9490/CVE-2020-11993 ?",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-dev] 20200811 Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-dev] 20200811 Re: Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3E"
          },
          {
            "name": "USN-4458-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4458-1/"
          },
          {
            "name": "FEDORA-2020-8122a8daa2",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/"
          },
          {
            "name": "FEDORA-2020-b58dc5df38",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/"
          },
          {
            "name": "openSUSE-SU-2020:1285",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html"
          },
          {
            "name": "openSUSE-SU-2020:1293",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html"
          },
          {
            "name": "DSA-4757",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2020/dsa-4757"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20200814-0005/"
          },
          {
            "name": "openSUSE-SU-2020:1792",
            "tags": [
              "vendor-advisory",
              "x_refsource_SUSE",
              "x_transferred"
            ],
            "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://www.oracle.com/security-alerts/cpujan2021.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html"
          },
          {
            "name": "[httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-cvs] 20210330 svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-cvs] 20210330 svn commit: r1888194 [13/13] - /httpd/site/trunk/content/security/json/",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-cvs] 20210330 svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-cvs] 20210330 svn commit: r1073139 [13/13] - in /websites/staging/httpd/trunk/content: ./ security/json/",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-cvs] 20210330 svn commit: r1073149 [13/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-cvs] 20210330 svn commit: r1073171 - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-11984.json security/json/CVE-2020-11993.json security/vulnerabilities_24.html",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-cvs] 20210330 svn commit: r1888228 - in /httpd/site/trunk/content/security/json: CVE-2020-11984.json CVE-2020-11993.json",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255%40%3Ccvs.httpd.apache.org%3E"
          },
          {
            "name": "[httpd-cvs] 20210606 svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Apache HTTP Server",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "2.4.20 to 2.4.43"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above \"info\" will mitigate this vulnerability for unpatched servers."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Push Diary Crash on Specifically Crafted HTTP/2 Header",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-06-06T10:11:52.000Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993"
        },
        {
          "name": "GLSA-202008-04",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202008-04"
        },
        {
          "name": "[httpd-dev] 20200808 Security announcements for CVE-2020-9490/CVE-2020-11993 ?",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-dev] 20200811 Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-dev] 20200811 Re: Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3E"
        },
        {
          "name": "USN-4458-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/4458-1/"
        },
        {
          "name": "FEDORA-2020-8122a8daa2",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/"
        },
        {
          "name": "FEDORA-2020-b58dc5df38",
          "tags": [
            "vendor-advisory",
            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/"
        },
        {
          "name": "openSUSE-SU-2020:1285",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html"
        },
        {
          "name": "openSUSE-SU-2020:1293",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html"
        },
        {
          "name": "DSA-4757",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2020/dsa-4757"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20200814-0005/"
        },
        {
          "name": "openSUSE-SU-2020:1792",
          "tags": [
            "vendor-advisory",
            "x_refsource_SUSE"
          ],
          "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://www.oracle.com/security-alerts/cpujan2021.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html"
        },
        {
          "name": "[httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-cvs] 20210330 svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-cvs] 20210330 svn commit: r1888194 [13/13] - /httpd/site/trunk/content/security/json/",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-cvs] 20210330 svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-cvs] 20210330 svn commit: r1073139 [13/13] - in /websites/staging/httpd/trunk/content: ./ security/json/",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce%40%3Ccvs.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-cvs] 20210330 svn commit: r1073149 [13/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-cvs] 20210330 svn commit: r1073171 - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-11984.json security/json/CVE-2020-11993.json security/vulnerabilities_24.html",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9%40%3Ccvs.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-cvs] 20210330 svn commit: r1888228 - in /httpd/site/trunk/content/security/json: CVE-2020-11984.json CVE-2020-11993.json",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255%40%3Ccvs.httpd.apache.org%3E"
        },
        {
          "name": "[httpd-cvs] 20210606 svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@apache.org",
          "ID": "CVE-2020-11993",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Apache HTTP Server",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "2.4.20 to 2.4.43"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above \"info\" will mitigate this vulnerability for unpatched servers."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Push Diary Crash on Specifically Crafted HTTP/2 Header"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993",
              "refsource": "MISC",
              "url": "https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993"
            },
            {
              "name": "GLSA-202008-04",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202008-04"
            },
            {
              "name": "[httpd-dev] 20200808 Security announcements for CVE-2020-9490/CVE-2020-11993 ?",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71@%3Cdev.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-dev] 20200811 Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1@%3Cdev.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-dev] 20200811 Re: Which version fixed the CVE-2020-9490, CVE-2020-11984 and CVE-2020-11993 vulnerabilities?",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672@%3Cdev.httpd.apache.org%3E"
            },
            {
              "name": "USN-4458-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/4458-1/"
            },
            {
              "name": "FEDORA-2020-8122a8daa2",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/"
            },
            {
              "name": "FEDORA-2020-b58dc5df38",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/"
            },
            {
              "name": "openSUSE-SU-2020:1285",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html"
            },
            {
              "name": "openSUSE-SU-2020:1293",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html"
            },
            {
              "name": "DSA-4757",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2020/dsa-4757"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2020.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuoct2020.html"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20200814-0005/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20200814-0005/"
            },
            {
              "name": "openSUSE-SU-2020:1792",
              "refsource": "SUSE",
              "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujan2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujan2021.html"
            },
            {
              "name": "http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html",
              "refsource": "MISC",
              "url": "http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html"
            },
            {
              "name": "[httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9@%3Ccvs.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-cvs] 20210330 svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf@%3Ccvs.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-cvs] 20210330 svn commit: r1888194 [13/13] - /httpd/site/trunk/content/security/json/",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775@%3Ccvs.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-cvs] 20210330 svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a@%3Ccvs.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-cvs] 20210330 svn commit: r1073139 [13/13] - in /websites/staging/httpd/trunk/content: ./ security/json/",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce@%3Ccvs.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920@%3Ccvs.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-cvs] 20210330 svn commit: r1073149 [13/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36@%3Ccvs.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-cvs] 20210330 svn commit: r1073171 - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-11984.json security/json/CVE-2020-11993.json security/vulnerabilities_24.html",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9@%3Ccvs.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-cvs] 20210330 svn commit: r1888228 - in /httpd/site/trunk/content/security/json: CVE-2020-11984.json CVE-2020-11993.json",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255@%3Ccvs.httpd.apache.org%3E"
            },
            {
              "name": "[httpd-cvs] 20210606 svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html",
              "refsource": "MLIST",
              "url": "https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d@%3Ccvs.httpd.apache.org%3E"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2020-11993",
    "datePublished": "2020-08-07T15:32:55.000Z",
    "dateReserved": "2020-04-21T00:00:00.000Z",
    "dateUpdated": "2024-08-04T11:48:57.265Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-11993",
      "date": "2026-07-14",
      "epss": "0.58716",
      "percentile": "0.98998"
    },
    "fkie_nvd": {
      "configurations": "[{\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"2.4.20\", \"versionEndIncluding\": \"2.4.43\", \"matchCriteriaId\": \"F8D242EA-720D-45EE-B8FA-181F1CCB5D6E\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"1FE996B1-6951-4F85-AA58-B99A379D2163\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*\", \"matchCriteriaId\": \"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*\", \"matchCriteriaId\": \"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*\", \"matchCriteriaId\": \"902B8056-9E37-443B-8905-8AA93E2447FB\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"B620311B-34A3-48A6-82DF-6F078D7A4493\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"B009C22E-30A4-4288-BCF6-C3E81DEAF45A\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"80F0FA5D-8D3B-4C0E-81E2-87998286AF33\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"36D96259-24BD-44E2-96D9-78CE1D41F956\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:communications_element_manager:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"8.2.0\", \"versionEndIncluding\": \"8.2.2\", \"matchCriteriaId\": \"B51F78F4-8D7E-48C2-86D1-D53A6EB348A7\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"8.2.0\", \"versionEndIncluding\": \"8.2.2\", \"matchCriteriaId\": \"3E5416A1-EE58-415D-9645-B6A875EBAED2\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:*\", \"versionStartIncluding\": \"8.2.0\", \"versionEndIncluding\": \"8.2.2\", \"matchCriteriaId\": \"11B0C37E-D7C7-45F2-A8D8-5A3B1B191430\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"B095CC03-7077-4A58-AB25-CC5380CDCE5A\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:hyperion_infrastructure_technology:11.1.2.4:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"DED59B62-C9BF-4C0E-B351-3884E8441655\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"82EA4BA7-C38B-4AF3-8914-9E3D089EBDD4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"B9C9BC66-FA5F-4774-9BDA-7AB88E2839C4\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"7F69B9A5-F21B-4904-9F27-95C0F7A628E3\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"D3E503FB-6279-4D4A-91D8-E237ECF9D2B0\"}]}]}]",
      "descriptions": "[{\"lang\": \"en\", \"value\": \"Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above \\\"info\\\" will mitigate this vulnerability for unpatched servers.\"}, {\"lang\": \"es\", \"value\": \"Apache HTTP Server versiones 2.4.20 hasta 2.4.43, cuando trace/debug fue habilitado para el m\\u00f3dulo HTTP/2 y en determinados patrones de tr\\u00e1fico de borde, se hicieron declaraciones de registro en la conexi\\u00f3n err\\u00f3nea, causando un uso concurrente de grupos de memoria. Configurando el LogLevel de mod_http2 sobre \\\"info\\\" mitigar\\u00e1 esta vulnerabilidad para los servidores sin parches\"}]",
      "id": "CVE-2020-11993",
      "lastModified": "2024-11-21T04:59:04.190",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"baseScore\": 7.5, \"baseSeverity\": \"HIGH\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 3.6}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:N/AC:M/Au:N/C:N/I:N/A:P\", \"baseScore\": 4.3, \"accessVector\": \"NETWORK\", \"accessComplexity\": \"MEDIUM\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"NONE\", \"integrityImpact\": \"NONE\", \"availabilityImpact\": \"PARTIAL\"}, \"baseSeverity\": \"MEDIUM\", \"exploitabilityScore\": 8.6, \"impactScore\": 2.9, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2020-08-07T16:15:11.887",
      "references": "[{\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html\", \"source\": \"security@apache.org\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html\", \"source\": \"security@apache.org\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html\", \"source\": \"security@apache.org\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html\", \"source\": \"security@apache.org\", \"tags\": [\"Exploit\", \"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993\", \"source\": \"security@apache.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/\", \"source\": \"security@apache.org\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/\", \"source\": \"security@apache.org\"}, {\"url\": \"https://security.gentoo.org/glsa/202008-04\", \"source\": \"security@apache.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20200814-0005/\", \"source\": \"security@apache.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://usn.ubuntu.com/4458-1/\", \"source\": \"security@apache.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2020/dsa-4757\", \"source\": \"security@apache.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpujan2021.html\", \"source\": \"security@apache.org\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpuoct2020.html\", \"source\": \"security@apache.org\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Mailing List\", \"Third Party Advisory\"]}, {\"url\": \"http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Exploit\", \"Third Party Advisory\", \"VDB Entry\"]}, {\"url\": \"https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}, {\"url\": \"https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9%40%3Ccvs.httpd.apache.org%3E\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}, {\"url\": \"https://security.gentoo.org/glsa/202008-04\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20200814-0005/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://usn.ubuntu.com/4458-1/\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.debian.org/security/2020/dsa-4757\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpujan2021.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Third Party Advisory\"]}, {\"url\": \"https://www.oracle.com/security-alerts/cpuoct2020.html\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\", \"tags\": [\"Vendor Advisory\"]}]",
      "sourceIdentifier": "security@apache.org",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-444\"}]}]"
    },
    "microsoft_vex": {
      "current_release_date": "2020-08-18T00:00:00.000Z",
      "cve": "CVE-2020-11993",
      "id": "msrc_CVE-2020-11993",
      "initial_release_date": "2020-08-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns logging statements were made on the wrong connection causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above \"info\" will mitigate this vulnerability for unpatched servers.",
      "url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-11993.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-11993\",\"sourceIdentifier\":\"security@apache.org\",\"published\":\"2020-08-07T16:15:11.887\",\"lastModified\":\"2025-05-01T15:40:19.830\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above \\\"info\\\" will mitigate this vulnerability for unpatched servers.\"},{\"lang\":\"es\",\"value\":\"Apache HTTP Server versiones 2.4.20 hasta 2.4.43, cuando trace/debug fue habilitado para el m\u00f3dulo HTTP/2 y en determinados patrones de tr\u00e1fico de borde, se hicieron declaraciones de registro en la conexi\u00f3n err\u00f3nea, causando un uso concurrente de grupos de memoria. Configurando el LogLevel de mod_http2 sobre \\\"info\\\" mitigar\u00e1 esta vulnerabilidad para los servidores sin parches\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":7.5,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:N/I:N/A:P\",\"baseScore\":4.3,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":2.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-444\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"2.4.20\",\"versionEndExcluding\":\"2.4.44\",\"matchCriteriaId\":\"D75F1269-3F0E-4083-B68D-DF4BAFB3381B\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1FE996B1-6951-4F85-AA58-B99A379D2163\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"902B8056-9E37-443B-8905-8AA93E2447FB\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B620311B-34A3-48A6-82DF-6F078D7A4493\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B009C22E-30A4-4288-BCF6-C3E81DEAF45A\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"07B237A9-69A3-4A9C-9DA0-4E06BD37AE73\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"80F0FA5D-8D3B-4C0E-81E2-87998286AF33\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"36D96259-24BD-44E2-96D9-78CE1D41F956\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_element_manager:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"8.2.0\",\"versionEndIncluding\":\"8.2.2\",\"matchCriteriaId\":\"B51F78F4-8D7E-48C2-86D1-D53A6EB348A7\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"8.2.0\",\"versionEndIncluding\":\"8.2.2\",\"matchCriteriaId\":\"3E5416A1-EE58-415D-9645-B6A875EBAED2\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"8.2.0\",\"versionEndIncluding\":\"8.2.2\",\"matchCriteriaId\":\"11B0C37E-D7C7-45F2-A8D8-5A3B1B191430\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B095CC03-7077-4A58-AB25-CC5380CDCE5A\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:hyperion_infrastructure_technology:11.1.2.4:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DED59B62-C9BF-4C0E-B351-3884E8441655\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"82EA4BA7-C38B-4AF3-8914-9E3D089EBDD4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"B9C9BC66-FA5F-4774-9BDA-7AB88E2839C4\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F69B9A5-F21B-4904-9F27-95C0F7A628E3\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D3E503FB-6279-4D4A-91D8-E237ECF9D2B0\"}]}]}],\"references\":[{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html\",\"source\":\"security@apache.org\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html\",\"source\":\"security@apache.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993\",\"source\":\"security@apache.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"security@apache.org\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202008-04\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20200814-0005/\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4458-1/\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2020/dsa-4757\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2021.html\",\"source\":\"security@apache.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuoct2020.html\",\"source\":\"security@apache.org\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00068.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00071.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00081.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Third Party Advisory\"]},{\"url\":\"http://packetstormsecurity.com/files/160393/Apache-2-HTTP2-Module-Concurrent-Pool-Usage.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\",\"VDB Entry\"]},{\"url\":\"https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2020-11993\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]},{\"url\":\"https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r09bb998baee74a2c316446bd1a41ae7f8d7049d09d9ff991471e8775%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r2c6083f6a2027914a0f5b54e2a1f4fa98c03f8693b58460911818255%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r3c5c3104813c1c5508b55564b66546933079250a46ce50eee90b2e36%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r5debe8f82728a00a4a68bc904dd6c35423bdfc8d601cfb4579f38bf1%40%3Cdev.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r623de9b2b2433a87f3f3a15900419fc9c00c77b26936dfea4060f672%40%3Cdev.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r9e9f1a7609760f0f80562eaaec2aa3c32d525c3e0fca98b475240c71%40%3Cdev.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/rdf3e5d0a5f5c3d90d6013bccc6c4d5af59cf1f8c8dea5d9a283d13ce%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.apache.org/thread.html/rf71eb428714374a6f9ad68952e23611ec7807b029fd6a1b4f5f732d9%40%3Ccvs.httpd.apache.org%3E\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4NKWG2EXAQQB6LMLATKZ7KLSRGCSHVAN/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ITVFDBVM6E3JF3O7RYLRPRCH3RDRHJJY/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202008-04\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20200814-0005/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4458-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2020/dsa-4757\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujan2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuoct2020.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Vendor Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T11:51:07+00:00",
      "cve": "CVE-2020-11993",
      "id": "CVE-2020-11993",
      "initial_release_date": "2020-08-07T00:00:00+00:00",
      "product_status:fixed": "361",
      "product_status:known_affected": "3",
      "product_status:known_not_affected": "16",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "httpd: mod_http2 concurrent pool usage",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-11993.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.