ghsa-wx7m-j6j8-xm63
Vulnerability from github
Published
2022-05-24 17:27
Modified
2023-02-27 15:30
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details

An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.

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{
   affected: [],
   aliases: [
      "CVE-2020-24659",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-787",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2020-09-04T15:15:00Z",
      severity: "MODERATE",
   },
   details: "An issue was discovered in GnuTLS before 3.6.15. A server can trigger a NULL pointer dereference in a TLS 1.3 client if a no_renegotiation alert is sent with unexpected timing, and then an invalid second handshake occurs. The crash happens in the application's error handling path, where the gnutls_deinit function is called after detecting a handshake failure.",
   id: "GHSA-wx7m-j6j8-xm63",
   modified: "2023-02-27T15:30:19Z",
   published: "2022-05-24T17:27:24Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2020-24659",
      },
      {
         type: "WEB",
         url: "https://gitlab.com/gnutls/gnutls/-/issues/1071",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/62BUAI4FQQLG6VTKRT7SUZPGJJ4NASQ3",
      },
      {
         type: "WEB",
         url: "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AWN56FDLQQXT2D2YHNI4TYH432TDMQ7N",
      },
      {
         type: "WEB",
         url: "https://security.gentoo.org/glsa/202009-01",
      },
      {
         type: "WEB",
         url: "https://security.netapp.com/advisory/ntap-20200911-0006",
      },
      {
         type: "WEB",
         url: "https://usn.ubuntu.com/4491-1",
      },
      {
         type: "WEB",
         url: "https://www.gnutls.org/security-new.html#GNUTLS-SA-2020-09-04",
      },
      {
         type: "WEB",
         url: "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00054.html",
      },
      {
         type: "WEB",
         url: "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00060.html",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
         type: "CVSS_V3",
      },
   ],
}


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