USN-2727-1: GnuTLS vulnerabilities

1 September 2015

gnutls28 vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 15.04

Summary

GnuTLS could be made to crash or run programs if it processed a specially crafted certificate.

Software Description

  • gnutls28 - GNU TLS library

Details

It was discovered that GnuTLS incorrectly handled parsing CRL distribution points. A remote attacker could possibly use this issue to cause a denial of service, or execute arbitrary code. (CVE-2015-3308)

Kurt Roeckx discovered that GnuTLS incorrectly handled a long DistinguishedName (DN) entry in a certificate. A remote attacker could possibly use this issue to cause a denial of service, or execute arbitrary code. (CVE-2015-6251)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 15.04
libgnutls-deb0-28 - 3.3.8-3ubuntu3.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References