USN-1418-1: GnuTLS vulnerabilities
5 April 2012
gnutls13, gnutls26 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Summary
The GnuTLS library could be made to crash under certain conditions.
Software Description
- gnutls26 - the GNU TLS library - commandline utilities
- gnutls13 - the GNU TLS library - commandline utilities
Details
Alban Crequy discovered that the GnuTLS library incorrectly checked array bounds when copying TLS session data. A remote attacker could crash a client application, leading to a denial of service, as the client application prepared for TLS session resumption. (CVE-2011-4128)
Matthew Hall discovered that the GnuTLS library incorrectly handled TLS records. A remote attacker could crash client and server applications, leading to a denial of service, by sending a crafted TLS record. (CVE-2012-1573)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 11.10
- libgnutls26 - 2.10.5-1ubuntu3.1
- Ubuntu 11.04
- libgnutls26 - 2.8.6-1ubuntu2.1
- Ubuntu 10.10
- libgnutls26 - 2.8.6-1ubuntu0.1
- Ubuntu 10.04 LTS
- libgnutls26 - 2.8.5-2ubuntu0.1
- Ubuntu 8.04 LTS
- libgnutls13 - 2.0.4-1ubuntu2.7
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.