cnvd - cnvd-2021-38781

cnvd-2021-38781

Vulnerability from cnvd

Title: Apache Subversion拒绝服务漏洞（CNVD-2021-38781）

Description:

Apache Subversion是美国阿帕奇（Apache）基金会的一套开源的版本控制系统。该系统可兼容并发版本系统(CVS)。

Apache Subversion存在拒绝服务漏洞，攻击者可利用该漏洞通过mod authz svn可以触发一个致命错误，导致拒绝服务。

Severity: 中

Patch Name: Apache Subversion拒绝服务漏洞（CNVD-2021-38781）的补丁

Patch Description:

Apache Subversion是美国阿帕奇（Apache）基金会的一套开源的版本控制系统。该系统可兼容并发版本系统(CVS)。

Apache Subversion存在拒绝服务漏洞，攻击者可利用该漏洞通过mod authz svn可以触发一个致命错误，导致拒绝服务。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接：https://access.redhat.com/errata/RHSA-2021:0509

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-17525

Impacted products

Name
['Apache Subversion >=1.9.0，<1.10.7', 'Apache Subversion >=1.11.0，<1.14.1']

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JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-17525",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-17525"
    }
  },
  "description": "Apache Subversion\u662f\u7f8e\u56fd\u963f\u5e15\u5947\uff08Apache\uff09\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u5f00\u6e90\u7684\u7248\u672c\u63a7\u5236\u7cfb\u7edf\u3002\u8be5\u7cfb\u7edf\u53ef\u517c\u5bb9\u5e76\u53d1\u7248\u672c\u7cfb\u7edf(CVS)\u3002\n\nApache Subversion\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7mod authz svn\u53ef\u4ee5\u89e6\u53d1\u4e00\u4e2a\u81f4\u547d\u9519\u8bef\uff0c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1ahttps://access.redhat.com/errata/RHSA-2021:0509",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-38781",
  "openTime": "2021-06-02",
  "patchDescription": "Apache Subversion\u662f\u7f8e\u56fd\u963f\u5e15\u5947\uff08Apache\uff09\u57fa\u91d1\u4f1a\u7684\u4e00\u5957\u5f00\u6e90\u7684\u7248\u672c\u63a7\u5236\u7cfb\u7edf\u3002\u8be5\u7cfb\u7edf\u53ef\u517c\u5bb9\u5e76\u53d1\u7248\u672c\u7cfb\u7edf(CVS)\u3002\r\n\r\nApache Subversion\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7mod authz svn\u53ef\u4ee5\u89e6\u53d1\u4e00\u4e2a\u81f4\u547d\u9519\u8bef\uff0c\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Apache Subversion\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-38781\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Apache Subversion \u003e=1.9.0\uff0c\u003c1.10.7",
      "Apache Subversion \u003e=1.11.0\uff0c\u003c1.14.1"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-17525",
  "serverity": "\u4e2d",
  "submitTime": "2021-03-11",
  "title": "Apache Subversion\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-38781\uff09"
}

CVE-2020-17525 (GCVE-0-2020-17525)

Vulnerability from cvelistv5

Published

2021-03-17 09:20

Modified

2025-02-13 16:27

Severity ?

CWE

CWE-476 - NULL Pointer Dereference

Summary

Subversion's mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7

References

▼	URL	Tags
	https://subversion.apache.org/security/CVE-2020-17525-advisory.txt	x_refsource_MISC
	https://lists.debian.org/debian-lts-announce/2021/05/msg00000.html	mailing-list, x_refsource_MLIST

Impacted products

	Vendor	Product	Version
	Apache Software Foundation	Apache Subversion	Version: mod_authz_svn < 1.14.1

Show details on NVD website

JSON

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{
  "containers": {
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        "providerMetadata": {
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            ],
            "url": "https://subversion.apache.org/security/CVE-2020-17525-advisory.txt"
          },
          {
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            "tags": [
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              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00000.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Apache Subversion",
          "vendor": "Apache Software Foundation",
          "versions": [
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              "version": "mod_authz_svn 1.10.7"
            },
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      ],
      "credits": [
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          "value": "Thomas \u00c5kesson (simonsoft.se)"
        }
      ],
      "descriptions": [
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          "value": "Subversion\u0027s mod_authz_svn module will crash if the server is using in-repository authz rules with the AuthzSVNReposRelativeAccessFile option and a client sends a request for a non-existing repository URL. This can lead to disruption for users of the service. This issue was fixed in mod_dav_svn+mod_authz_svn servers 1.14.1 and mod_dav_svn+mod_authz_svn servers 1.10.7"
        }
      ],
      "problemTypes": [
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          "descriptions": [
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            }
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-08-04T14:01:40.000Z",
        "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "shortName": "apache"
      },
      "references": [
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          "tags": [
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          "url": "https://subversion.apache.org/security/CVE-2020-17525-advisory.txt"
        },
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          "name": "[debian-lts-announce] 20210504 [SECURITY] [DLA 2646-1] subversion security update",
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          ],
          "url": "https://lists.debian.org/debian-lts-announce/2021/05/msg00000.html"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Remote unauthenticated denial-of-service in Subversion mod_authz_svn",
      "workarounds": [
        {
          "lang": "en",
          "value": "As a workaround, the use of in-repository authz rules files with the AuthzSVNReposRelativeAccessFile can be avoided by switching to an alternative configuration which fetches an authz rules file from the server\u0027s filesystem, rather than from an SVN repository."
        }
      ],
      "x_generator": {
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      },
      "x_legacyV4Record": {
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          "STATE": "PUBLIC",
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Apache Subversion",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_name": "mod_authz_svn",
                            "version_value": "1.14.1"
                          },
                          {
                            "version_affected": "!",
                            "version_name": "mod_authz_svn",
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                          }
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                  ]
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        },
        "credit": [
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            "value": "Thomas \u00c5kesson (simonsoft.se)"
          }
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            },
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            }
          ]
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        "source": {
          "discovery": "UNKNOWN"
        },
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          {
            "lang": "en",
            "value": "As a workaround, the use of in-repository authz rules files with the AuthzSVNReposRelativeAccessFile can be avoided by switching to an alternative configuration which fetches an authz rules file from the server\u0027s filesystem, rather than from an SVN repository."
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        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
    "assignerShortName": "apache",
    "cveId": "CVE-2020-17525",
    "datePublished": "2021-03-17T09:20:14.000Z",
    "dateReserved": "2020-08-12T00:00:00.000Z",
    "dateUpdated": "2025-02-13T16:27:35.247Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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