GnuTLS: Multiple vulnerabilities

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201110-05 / gnutls
Release Date	October 10, 2011
Latest Revision	October 10, 2011: 1
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
net-libs/gnutls	< 2.10.0	>= 2.10.0	All supported architectures

Related bugreports: #281224, #292025

Synopsis

Multiple vulnerabilities were found in GnuTLS, allowing for easier man-in-the-middle attacks.

2. Impact Information

Background

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

Description

Multiple vulnerabilities have been discovered in GnuTLS. Please review the CVE identifiers referenced below for details.

Impact

An attacker could perform man-in-the-middle attacks to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority or to inject an arbitrary amount of chosen plaintext into the beginning of the application protocol stream, allowing for further exploitation.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All GnuTLS users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=net-libs/gnutls-2.10.0"

NOTE: This is a legacy GLSA. Updates for all affected architectures are available since August 6, 2010. It is likely that your system is already no longer affected by this issue.

4. References

Page updated October 10, 2011

Summary: This is a Gentoo Linux Security Advisory

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