=========================================================================Ubuntu Security Notice USN-1418-1
April 05, 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
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-1418-1
CVE-2011-4128, CVE-2012-1573
Package Information:
https://launchpad.net/ubuntu/+source/gnutls26/2.10.5-1ubuntu3.1
https://launchpad.net/ubuntu/+source/gnutls26/2.8.6-1ubuntu2.1
https://launchpad.net/ubuntu/+source/gnutls26/2.8.6-1ubuntu0.1
https://launchpad.net/ubuntu/+source/gnutls26/2.8.5-2ubuntu0.1
https://launchpad.net/ubuntu/+source/gnutls13/2.0.4-1ubuntu2.7
