gsd-2020-35680
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client activity, because the filter state machine does not properly maintain the I/O channel between the SMTP engine and the filters layer.
Aliases
Aliases
CVE-2020-35680


To clipboard 

{
  "GSD": {
    "alias": "CVE-2020-35680",
    "description": "smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client activity, because the filter state machine does not properly maintain the I/O channel between the SMTP engine and the filters layer.",
    "id": "GSD-2020-35680",
    "references": [
      "https://www.suse.com/security/cve/CVE-2020-35680.html",
      "https://security.archlinux.org/CVE-2020-35680"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-35680"
      ],
      "details": "smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client activity, because the filter state machine does not properly maintain the I/O channel between the SMTP engine and the filters layer.",
      "id": "GSD-2020-35680",
      "modified": "2023-12-13T01:22:00.554433Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-35680",
        "STATE": "PUBLIC"
      },
      "affects": {
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            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
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                        {
                          "version_value": "n/a"
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          }
        ]
      },
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        "reference_data": [
          {
            "name": "https://poolp.org/posts/2020-12-24/december-2020-opensmtpd-6.8.0p1-released-fixed-several-bugs-proposed-several-diffs-book-is-on-github/",
            "refsource": "MISC",
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          {
            "name": "https://www.mail-archive.com/misc@opensmtpd.org/msg05188.html",
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            "url": "https://www.mail-archive.com/misc@opensmtpd.org/msg05188.html"
          },
          {
            "name": "https://github.com/openbsd/src/commit/6c3220444ed06b5796dedfd53a0f4becd903c0d1",
            "refsource": "MISC",
            "url": "https://github.com/openbsd/src/commit/6c3220444ed06b5796dedfd53a0f4becd903c0d1"
          },
          {
            "name": "FEDORA-2021-71fbdecdf8",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TYAYXRV2DM5K4RU7RHCDZSA2UF6VCTRC/"
          },
          {
            "name": "FEDORA-2021-848fd34b0b",
            "refsource": "FEDORA",
            "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5LKTFBQCHGMVPR4IZWHQIYAPM5J3LN3J/"
          },
          {
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            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/202105-12"
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        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
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                "cpe_name": [],
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              },
              {
                "cpe23Uri": "cpe:2.3:a:opensmtpd:opensmtpd:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "6.8.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:opensmtpd:opensmtpd:6.8.0:patch1-rc1:*:*:*:*:*:*",
                "cpe_name": [],
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              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
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              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
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      },
      "cve": {
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            }
          ]
        },
        "problemtype": {
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                {
                  "lang": "en",
                  "value": "CWE-476"
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/openbsd/src/commit/6c3220444ed06b5796dedfd53a0f4becd903c0d1",
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              "url": "https://www.mail-archive.com/misc@opensmtpd.org/msg05188.html"
            },
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              "refsource": "MISC",
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            },
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              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5LKTFBQCHGMVPR4IZWHQIYAPM5J3LN3J/"
            },
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            },
            {
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              "url": "https://security.gentoo.org/glsa/202105-12"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-09-02T03:47Z",
      "publishedDate": "2020-12-24T16:15Z"
    }
  }
}


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