USN-1418-1: GnuTLS vulnerabilities

05 April 2012

The GnuTLS library could be made to crash under certain conditions.

Releases

Packages

  • gnutls13 - the GNU TLS library - commandline utilities
  • gnutls26 - 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 8.04
Ubuntu 11.10
Ubuntu 11.04
Ubuntu 10.10
Ubuntu 10.04

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