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[USN-2727-1] GnuTLS vulnerabilities

Posted on 01 September 2015
Ubuntu Security

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Ubuntu Security Notice USN-2727-1
September 01, 2015

gnutls28 vulnerabilities
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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 distributio=
n
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 arbitrar=
y
code. (CVE-2015-6251)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 15.04:
libgnutls-deb0-28 3.3.8-3ubuntu3.1

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


References:
http://www.ubuntu.com/usn/usn-2727-1
CVE-2015-3308, CVE-2015-6251

Package Information:
https://launchpad.net/ubuntu/+source/gnutls28/3.3.8-3ubuntu3.1

 

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