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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