GLSA 201402-25: OpenSSL: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	OpenSSL: Denial of Service
Date:	02/21/2014
Bugs:	#497838
ID:	201402-25

Synopsis

A vulnerability in OpenSSL's handling of TLS handshakes could result in a Denial of Service condition.

Background

OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general purpose cryptography library.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
dev-libs/openssl	< 1.0.1f	>= 1.0.1f	All supported architectures

Description

A flaw in the ssl3_take_mac function can result in a NULL pointer dereference.

Impact

A remote attacker could send a specially crafted TLS handshake, resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All OpenSSL 1.0.1 users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=dev-libs/openssl-1.0.1f"

References

CVE-2013-4353

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201402-25.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.