GLSA 201206-18: GnuTLS: Multiple vulnerabilities

http://security.gentoo.org/

Severity:	normal
Title:	GnuTLS: Multiple vulnerabilities
Date:	06/23/2012
Bugs:	#281224, #292025, #389947, #409287
ID:	201206-18

Synopsis

Multiple vulnerabilities have been found in GnuTLS, allowing a remote attacker to perform man-in-the-middle or Denial of Service attacks.

Background

GnuTLS is an Open Source implementation of the TLS 1.2 and SSL 3.0 protocols.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-libs/gnutls	< 2.12.18	>= 2.12.18	All supported architectures

Description

Multiple vulnerabilities have been found in GnuTLS:

An error in libgnutls does not properly sanitize "\0" characters from certificate fields (CVE-2009-2730).
An error in the TLS and SSL protocols mistreats renegotiation handshakes (CVE-2009-3555).
A boundary error in the "gnutls_session_get_data()" function in gnutls_session.c could cause a buffer overflow (CVE-2011-4128).
An error in the "_gnutls_ciphertext2compressed()" function in gnutls_cipher.c could cause memory corruption (CVE-2012-1573).

Impact

A remote attacker could perform man-in-the-middle attacks to spoof arbitrary SSL servers or cause a Denial of Service condition in applications linked against GnuTLS.

Workaround

There is no known workaround at this time.

Resolution

All GnuTLS users should upgrade to the latest version:

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.12.18"

References

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201206-18.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.