GHSA-6748-36QP-FX6R

Vulnerability from github – Published: 2022-05-17 04:56 – Updated: 2024-10-24 21:47
VLAI
Summary
PyOpenSSL Mishandles NUL Byte In Certificate Subject Alternative Name
Details

The X509Extension in pyOpenSSL before 0.13.1 does not properly handle a \0 character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "pyOpenSSL"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.13.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2013-4314"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2024-02-23T20:57:09Z",
    "nvd_published_at": "2013-09-30T21:55:00Z",
    "severity": "HIGH"
  },
  "details": "The X509Extension in pyOpenSSL before 0.13.1 does not properly handle a `\\0` character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority.",
  "id": "GHSA-6748-36qp-fx6r",
  "modified": "2024-10-24T21:47:16Z",
  "published": "2022-05-17T04:56:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2013-4314"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pyca/pyopenssl/commit/6bbf44a00b35fb28df1f66aa194b2fe95eab1ab2"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1005325"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/pyca/pyopenssl"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/pyopenssl/PYSEC-2013-31.yaml"
    },
    {
      "type": "WEB",
      "url": "https://mail.python.org/pipermail/pyopenssl-users/2013-September/000478.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-updates/2013-11/msg00015.html"
    },
    {
      "type": "WEB",
      "url": "http://www.debian.org/security/2013/dsa-2763"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2013/09/06/2"
    },
    {
      "type": "WEB",
      "url": "http://www.ubuntu.com/usn/USN-1965-1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "PyOpenSSL Mishandles NUL Byte In Certificate Subject Alternative Name"
}



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