usn-2912-1
Vulnerability from osv_ubuntu
Published
2016-02-23 14:14
Modified
2026-04-22 07:36
Summary
libssh vulnerabilities
Details

Mariusz Ziulek discovered that libssh incorrectly handled certain packets. A remote attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service. (CVE-2015-3146)

Aris Adamantiadis discovered that libssh incorrectly generated ephemeral secret keys of 128 bits instead of the recommended 1024 or 2048 bits when using the diffie-hellman-group1 and diffie-hellman-group14 methods. If a remote attacker were able to perform a machine-in-the-middle attack, this flaw could be exploited to view sensitive information. (CVE-2016-0739)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2015-3146",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2016-0739",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssh-4",
            "binary_version": "0.6.1-0ubuntu3.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "libssh",
        "purl": "pkg:deb/ubuntu/libssh@0.6.1-0ubuntu3.3?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.1-0ubuntu3.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.5.4-1",
        "0.6.1-0ubuntu2",
        "0.6.1-0ubuntu3",
        "0.6.1-0ubuntu3.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Mariusz Ziulek discovered that libssh incorrectly handled certain packets.\nA remote attacker could possibly use this issue to cause libssh to crash,\nresulting in a denial of service.\n(CVE-2015-3146)\n\nAris Adamantiadis discovered that libssh incorrectly generated ephemeral\nsecret keys of 128 bits instead of the recommended 1024 or 2048 bits when\nusing the diffie-hellman-group1 and diffie-hellman-group14 methods. If a\nremote attacker were able to perform a machine-in-the-middle attack, this flaw\ncould be exploited to view sensitive information. (CVE-2016-0739)\n",
  "id": "USN-2912-1",
  "modified": "2026-04-22T07:36:33Z",
  "published": "2016-02-23T14:14:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-2912-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2015-3146"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2016-0739"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "libssh vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2015-3146",
    "UBUNTU-CVE-2016-0739"
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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