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CVE-2013-6449

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.

Published:Dec 19, 2013

Last Modified:Apr 11, 2025

EPS:Dec 23, 2013

EPSS Score:0.41253

CVSS Score:4.3

Affected Products

Vendor

Product

Action

Vendor

Openssl

Product

Openssl

Openssl

Openssl

Vendor

Redhat

Product

Enterprise Linux

Redhat

Enterprise Linux

Exploits

No exploit reference

Common Weakness Enumeration

No CWE recorded yet

Common Attack Pattern Enumeration and Classification (CAPEC)

No CAPEC recorded yet

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CVE-2026-54874 (CVSS 7.5) — Issue summary: Receiving a DTLS record for a future epoch while a handshake is in progress causes OpenSSL to b…

CVE-2026-14457 (CVSS 7.5) — Issue summary: In a server or client configuration with RFC7250 Raw Public Keys (RPKs) enabled, and only the p…

CVE-2026-63076 (CVSS 7.5) — Issue summary: OpenSSL CMP password based protection verification only checks whether the protectionAlg parame…

CVE-2026-63074 (CVSS 5.9) — Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) s…

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References

http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=ca989269a2876bae79393bd54c3e72d49975fc75

http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124833.html

http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124854.html

http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124858.html

http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html

http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html

http://lists.opensuse.org/opensuse-updates/2014-01/msg00006.html

http://lists.opensuse.org/opensuse-updates/2014-01/msg00009.html

http://lists.opensuse.org/opensuse-updates/2014-01/msg00012.html

http://lists.opensuse.org/opensuse-updates/2014-01/msg00031.html

http://rhn.redhat.com/errata/RHSA-2014-0015.html

http://rhn.redhat.com/errata/RHSA-2014-0041.html

http://rt.openssl.org/Ticket/Display.html?id=3200&user=guest&pass=guest

http://seclists.org/fulldisclosure/2014/Dec/23

http://security.gentoo.org/glsa/glsa-201412-39.xml

http://www-01.ibm.com/support/docview.wss?uid=isg400001841

http://www-01.ibm.com/support/docview.wss?uid=isg400001843

http://www.debian.org/security/2014/dsa-2833

http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html

http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html

http://www.securityfocus.com/archive/1/534161/100/0/threaded

http://www.securityfocus.com/bid/64530

http://www.securitytracker.com/id/1029548

http://www.ubuntu.com/usn/USN-2079-1

http://www.vmware.com/security/advisories/VMSA-2014-0012.html

https://bugzilla.redhat.com/show_bug.cgi?id=1045363

https://issues.apache.org/jira/browse/TS-2355

http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=ca989269a2876bae79393bd54c3e72d49975fc75

http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124833.html

http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124854.html

http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124858.html

http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html

http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html

http://lists.opensuse.org/opensuse-updates/2014-01/msg00006.html

http://lists.opensuse.org/opensuse-updates/2014-01/msg00009.html

http://lists.opensuse.org/opensuse-updates/2014-01/msg00012.html

http://lists.opensuse.org/opensuse-updates/2014-01/msg00031.html

http://rhn.redhat.com/errata/RHSA-2014-0015.html

http://rhn.redhat.com/errata/RHSA-2014-0041.html

http://rt.openssl.org/Ticket/Display.html?id=3200&user=guest&pass=guest

http://seclists.org/fulldisclosure/2014/Dec/23

http://security.gentoo.org/glsa/glsa-201412-39.xml

http://www-01.ibm.com/support/docview.wss?uid=isg400001841

http://www-01.ibm.com/support/docview.wss?uid=isg400001843

http://www.debian.org/security/2014/dsa-2833

http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html

http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html

http://www.securityfocus.com/archive/1/534161/100/0/threaded

http://www.securityfocus.com/bid/64530

http://www.securitytracker.com/id/1029548

http://www.ubuntu.com/usn/USN-2079-1

http://www.vmware.com/security/advisories/VMSA-2014-0012.html

https://bugzilla.redhat.com/show_bug.cgi?id=1045363

https://issues.apache.org/jira/browse/TS-2355

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High