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==========================================================================
Ubuntu Security Notice USN-2957-1
May 02, 2016
libtasn1-3, libtasn1-6 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS
Summary:
Libtasn1 could be made to hang if it processed specially crafted data.
Software Description:
- libtasn1-6: Library to manage ASN.1 structures
- libtasn1-3: Library to manage ASN.1 structures
Details:
Pascal Cuoq and Miod Vallat discovered that Libtasn1 incorrectly handled
certain malformed DER certificates. A remote attacker could possibly use
this issue to cause applications using Libtasn1 to hang, resulting in a
denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 15.10:
libtasn1-6 4.5-2ubuntu0.1
Ubuntu 14.04 LTS:
libtasn1-6 3.4-3ubuntu0.4
Ubuntu 12.04 LTS:
libtasn1-3 2.10-1ubuntu1.5
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2957-1
CVE-2016-4008
Package Information:
https://launchpad.net/ubuntu/+source/libtasn1-6/4.5-2ubuntu0.1
https://launchpad.net/ubuntu/+source/libtasn1-6/3.4-3ubuntu0.4
https://launchpad.net/ubuntu/+source/libtasn1-3/2.10-1ubuntu1.5
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