ghsa-v7q8-7g48-2272
Vulnerability from github
Published
2022-05-17 00:16
Modified
2025-04-12 12:58
Severity ?
5.9 (Medium) - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Details

libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."

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{
   affected: [],
   aliases: [
      "CVE-2016-0739",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-200",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2016-04-13T17:59:00Z",
      severity: "MODERATE",
   },
   details: "libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a \"bits/bytes confusion bug.\"",
   id: "GHSA-v7q8-7g48-2272",
   modified: "2025-04-12T12:58:38Z",
   published: "2022-05-17T00:16:49Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2016-0739",
      },
      {
         type: "WEB",
         url: "https://puppet.com/security/cve/CVE-2016-0739",
      },
      {
         type: "WEB",
         url: "https://security.gentoo.org/glsa/201606-12",
      },
      {
         type: "WEB",
         url: "https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release",
      },
      {
         type: "WEB",
         url: "https://www.libssh.org/security/advisories/CVE-2016-0739.txt",
      },
      {
         type: "WEB",
         url: "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html",
      },
      {
         type: "WEB",
         url: "http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html",
      },
      {
         type: "WEB",
         url: "http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html",
      },
      {
         type: "WEB",
         url: "http://rhn.redhat.com/errata/RHSA-2016-0566.html",
      },
      {
         type: "WEB",
         url: "http://www.debian.org/security/2016/dsa-3488",
      },
      {
         type: "WEB",
         url: "http://www.ubuntu.com/usn/USN-2912-1",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
         type: "CVSS_V3",
      },
   ],
}


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