GLSA 201710-15: GnuTLS: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	GnuTLS: Denial of Service
Date:	10/15/2017
Bugs:	#622038
ID:	201710-15

Synopsis

A null pointer dereference in GnuTLS might allow attackers to cause a Denial of Service condition.

Background

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
net-libs/gnutls	< 3.5.13	>= 3.5.13	All supported architectures

Description

A null pointer dereference while decoding a status response TLS extension with valid contents was discovered in GnuTLS.

Impact

A remote attacker could possibly cause a Denial of Service condition.

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-3.5.13"

Packages which depend on this library may need to be recompiled. Tools such as revdep-rebuild may assist in identifying some of these packages.

References

CVE-2017-7507

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201710-15.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.