Vulnerability Assessment & Network Security Forums

If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

Home >> Browse Vulnerability Assessment Database >> Ubuntu Local Security Checks >> USN251-1 : libtasn1-2 vulnerability

Vulnerability Assessment Details

USN251-1 : libtasn1-2 vulnerability

Vulnerability Assessment Summary
libtasn1-2 vulnerability

Detailed Explanation for this Vulnerability Assessment

Summary :

These remote packages are missing security patches :
- gnutls-bin
- libgnutls-doc
- libgnutls10
- libgnutls10-dev
- libgnutls11
- libgnutls11-dbg
- libgnutls11-dev
- libtasn1-2
- libtasn1-2-dev

Description :

Evgeny Legerov discovered a buffer overflow in the DER format decoding
function of the libtasn library. This library is mainly used by the
GNU TLS library
by sending a specially crafted X.509 certificate to a
server which uses TLS encryption/authentication, a remote attacker
could exploit this to crash that server process and possibly even
execute arbitrary code with the rights of that server.

In order to fix the vulnerability in libtasn, several internal
function signatures had to be changed
some of these functions are
used by the GNU TLS library, so that library needs to be updated as

Solution :

Upgrade to :
- gnutls-bin-1.0.16-13.1ubuntu1.1 (Ubuntu 5.10)
- libgnutls-doc-1.0.4-3ubuntu1.2 (Ubuntu 4.10)
- libgnutls10-1.0.4-3ubuntu1.2 (Ubuntu 4.10)
- libgnutls10-dev-1.0.4-3ubuntu1.2 (Ubuntu 4.10)
- libgnutls11-1.0.16-13.1ubuntu1.1 (Ubuntu 5.10)
- libgnutls11-dbg-1.0.16-13.1ubuntu1.1 (Ubuntu 5.10)
- libgnutls11-dev-1.0.16-13.1ubuntu1.1 (Ubuntu 5.10)
- libtasn1-2-0.2.10-4ubuntu0.1 (Ubuntu 5.10)
- libtasn1-2-dev-0.2.10-4ubuntu0.1 (Ubuntu 5.10)

Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: Ubuntu Security Notice (C) 2005 Canonical, Inc. / NASL script (C) 2005 Michel Arboi

Cables, Connectors

Dell 23" Inspiron All-In-One Desktop
Dell 23HP Laptop 17.3" WIN10 8GB 1TB DVD+RW WiFi Webcam Bluetooth (FULLY LOADED)
HP Laptop 17.3Lenovo Legion Y530 15.6" 1TB HDD, 8GB RAM (4X2) 2666, I5 8300H 1080P 
Lenovo Legion Y530 15.6HP Pavilion 15-p263nr 15.6 Laptop AMD A10-4655M 12GB 1TB HDD No Charger
HP Pavilion 15-p263nr 15.6 Laptop AMD A10-4655M 12GB 1TB HDD No Charger picture


No Discussions have been posted on this vulnerability.