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CVE-2013-6449 (GCVE-0-2013-6449)

Vulnerability from cvelistv5 – Published: 2013-12-23 22:00 – Updated: 2024-08-06 17:39
VLAI
Summary
The ssl_get_algorithm2 function in ssl/s3_lib.c in OpenSSL before 1.0.2 obtains a certain version number from an incorrect data structure, which allows remote attackers to cause a denial of service (daemon crash) via crafted traffic from a TLS 1.2 client.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
URL Tags
http://www.vmware.com/security/advisories/VMSA-20… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-updates/2014-0… vendor-advisoryx_refsource_SUSE
http://www-01.ibm.com/support/docview.wss?uid=isg… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-updates/2014-0… vendor-advisoryx_refsource_SUSE
http://security.gentoo.org/glsa/glsa-201412-39.xml vendor-advisoryx_refsource_GENTOO
http://www.debian.org/security/2014/dsa-2833 vendor-advisoryx_refsource_DEBIAN
http://www.securityfocus.com/archive/1/534161/100… mailing-listx_refsource_BUGTRAQ
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://www-01.ibm.com/support/docview.wss?uid=isg… x_refsource_CONFIRM
http://www.securityfocus.com/bid/64530 vdb-entryx_refsource_BID
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
http://lists.opensuse.org/opensuse-updates/2014-0… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-updates/2014-0… vendor-advisoryx_refsource_SUSE
http://www.ubuntu.com/usn/USN-2079-1 vendor-advisoryx_refsource_UBUNTU
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://rt.openssl.org/Ticket/Display.html?id=3200… x_refsource_CONFIRM
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://www.oracle.com/technetwork/topics/security… x_refsource_CONFIRM
http://rhn.redhat.com/errata/RHSA-2014-0015.html vendor-advisoryx_refsource_REDHAT
http://seclists.org/fulldisclosure/2014/Dec/23 mailing-listx_refsource_FULLDISC
https://issues.apache.org/jira/browse/TS-2355 x_refsource_CONFIRM
http://www.securitytracker.com/id/1029548 vdb-entryx_refsource_SECTRACK
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://lists.fedoraproject.org/pipermail/package-… vendor-advisoryx_refsource_FEDORA
http://git.openssl.org/gitweb/?p=openssl.git%3Ba=… x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1045363 x_refsource_CONFIRM
http://rhn.redhat.com/errata/RHSA-2014-0041.html vendor-advisoryx_refsource_REDHAT
Date Public
2013-11-15 00:00
Show details on NVD website
To clipboard 

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                    "matchCriteriaId": "56C47D3A-B99D-401D-B6B8-1194B2DB4809",
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                    "vulnerable": true
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                    "matchCriteriaId": "CEDACCB9-8D61-49EE-9957-9E58BC7BB031",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "The ssl_get_algorithm2 function in ssl/s3_lib.c in OpenSSL before 1.0.2 obtains a certain version number from an incorrect data structure, which allows remote attackers to cause a denial of service (daemon crash) via crafted traffic from a TLS 1.2 client."
          },
          {
            "lang": "es",
            "value": "La funci\u00f3n ssl_get_algorithm2 en ssl/s3_lib.c en OpenSSL anterior a v1.0.2 obtiene un cierto n\u00famero de versi\u00f3n de una estructura de datos incorrectos, lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (ca\u00edda del demonio) a trav\u00e9s de tr\u00e1fico de red de un cliente TLS v1.2."
          }
        ],
        "id": "CVE-2013-6449",
        "lastModified": "2026-04-29T01:13:23.040",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "NETWORK",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 4.3,
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 8.6,
              "impactScore": 2.9,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": false
            }
          ]
        },
        "published": "2013-12-23T22:55:03.020",
        "references": [
          {
            "source": "secalert@redhat.com",
            "url": "http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=ca989269a2876bae79393bd54c3e72d49975fc75"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124833.html"
          },
          {
            "source": "secalert@redhat.com",
            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124854.html"
          },
          {
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            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html"
          },
          {
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            "url": "http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html"
          },
          {
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            "url": "http://lists.opensuse.org/opensuse-updates/2014-01/msg00006.html"
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            "url": "http://www.securitytracker.com/id/1029548"
          },
          {
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            "url": "http://www.ubuntu.com/usn/USN-2079-1"
          },
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1045363"
          },
          {
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            "url": "https://issues.apache.org/jira/browse/TS-2355"
          }
        ],
        "sourceIdentifier": "secalert@redhat.com",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-310"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-08-04T18:56:48+00:00",
      "cve": "CVE-2013-6449",
      "id": "CVE-2013-6449",
      "initial_release_date": "2013-12-19T00:00:00+00:00",
      "product_status:fixed": "73",
      "product_status:known_not_affected": "17",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "openssl: crash when using TLS 1.2 caused by use of incorrect hash algorithm",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2013/cve-2013-6449.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-02T09:08:07Z",
      "cve": "CVE-2013-6449",
      "id": "CVE-2013-6449",
      "initial_release_date": "2023-02-15T05:34:06Z",
      "product_status:known_affected": "75",
      "product_status:known_not_affected": "286",
      "product_status:recommended": "300",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2013-6449",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2013-6449.json",
      "version": "23"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.