CVE-2012-4559 (GCVE-0-2012-4559)

Vulnerability from cvelistv5 – Published: 2012-11-30 22:00 – Updated: 2024-08-06 20:42
VLAI
Summary
Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1042 records in the last 180 days details
References
Date Public
2012-11-20 00:00
Show details on NVD website
To clipboard 

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                    "criteria": "cpe:2.3:a:libssh:libssh:0.4.8:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6514D889-F87F-44D1-9C7B-5BE75676DCFF",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:libssh:libssh:0.5.0:*:*:*:*:*:*:*",
                    "matchCriteriaId": "A80094C5-1273-43AB-9E1E-096D8B0A60BB",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:libssh:libssh:0.5.0:rc1:*:*:*:*:*:*",
                    "matchCriteriaId": "CF67514C-3240-42A4-9996-21E855104C59",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:a:libssh:libssh:0.5.1:*:*:*:*:*:*:*",
                    "matchCriteriaId": "7BBD0BC3-2467-414E-BD82-2A5778B810F9",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "Multiple double free vulnerabilities in the (1) agent_sign_data function in agent.c, (2) channel_request function in channels.c, (3) ssh_userauth_pubkey function in auth.c, (4) sftp_parse_attr_3 function in sftp.c, and (5) try_publickey_from_file function in keyfiles.c in libssh before 0.5.3 allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unspecified vectors."
          },
          {
            "lang": "es",
            "value": "M\u00faltiples vulnerabilidades de doble liberaci\u00f3n en  las funciones (1) agent_sign_data en agent.c, (2) channel_request en channels.c, (3) ssh_userauth_pubkey en auth.c, (4) sftp_parse_attr_3 en sftp.c, y (5) try_publickey_from_file en keyfiles.c en libssh antes de v0.5.3 permiten a atacantes remotos provocar una denegaci\u00f3n de servicio (ca\u00edda de la aplicaci\u00f3n) y posiblemente ejecutar c\u00f3digo de su elecci\u00f3n a trav\u00e9s de vectores no especificados.\r\n"
          }
        ],
        "id": "CVE-2012-4559",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 6.8,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ]
        },
        "published": "2012-11-30T22:55:01.643",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.debian.org/security/2012/dsa-2577"
          },
          {
            "source": "secalert@redhat.com",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:175"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.openwall.com/lists/oss-security/2012/11/20/3"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.securityfocus.com/bid/56604"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://www.ubuntu.com/usn/USN-1640-1"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=871612"
          },
          {
            "source": "secalert@redhat.com",
            "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/80218"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093313.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2012-November/093474.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2012-12/msg00002.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-updates/2012-12/msg00016.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://lists.opensuse.org/opensuse-updates/2013-01/msg00021.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.debian.org/security/2012/dsa-2577"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Vendor Advisory"
            ],
            "url": "http://www.libssh.org/2012/11/20/libssh-0-5-3-security-release/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.mandriva.com/security/advisories?name=MDVSA-2012:175"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.openwall.com/lists/oss-security/2012/11/20/3"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.securityfocus.com/bid/56604"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "http://www.ubuntu.com/usn/USN-1640-1"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=871612"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/80218"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-399"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2025-11-21T12:48:45+00:00",
      "cve": "CVE-2012-4559",
      "id": "CVE-2012-4559",
      "initial_release_date": "2012-11-20T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "libssh: multiple double free() flaws",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2012/cve-2012-4559.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-10-26T00:58:46Z",
      "cve": "CVE-2012-4559",
      "id": "CVE-2012-4559",
      "initial_release_date": "2023-02-15T05:44:30Z",
      "product_status:known_affected": "0",
      "product_status:known_not_affected": "21",
      "product_status:recommended": "118",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2012-4559",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/2023/cve-2012-4559.json",
      "version": "18"
    }
  }
}



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