==========================================================================
Ubuntu Security Notice USN-3309-1
June 05, 2017
libtasn1-6 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 17.04
– Ubuntu 16.10
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS
Summary:
Libtasn1 could be made to crash or run programs as your login if it opened
a specially crafted file.
Software Description:
– libtasn1-6: Library to manage ASN.1 structures
Details:
Jakub Jirasek discovered that GnuTLS incorrectly handled certain
assignments files. If a user were tricked into processing a specially
crafted assignments file, a remote attacker could possibly execute arbirary
code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.04:
libtasn1-6 4.10-1ubuntu0.1
Ubuntu 16.10:
libtasn1-6 4.9-4ubuntu0.1
Ubuntu 16.04 LTS:
libtasn1-6 4.7-3ubuntu0.16.04.2
Ubuntu 14.04 LTS:
libtasn1-6 3.4-3ubuntu0.5
In general, a standard system update will make all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-3309-1
CVE-2017-6891
Package Information:
https://launchpad.net/ubuntu/+source/libtasn1-6/4.10-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libtasn1-6/4.9-4ubuntu0.1
https://launchpad.net/ubuntu/+source/libtasn1-6/4.7-3ubuntu0.16.04.2
https://launchpad.net/ubuntu/+source/libtasn1-6/3.4-3ubuntu0.5
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