Ubuntu Security Notice USN-2727-1
1st 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 version:
- 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.