USN-2727-1: GnuTLS vulnerabilities

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.

References

CVE-2015-3308, CVE-2015-6251