Ubuntu 10.04 LTS / 12.04 LTS / 14.04 LTS / 14.10 : libtasn1-3, libtasn1-6 vulnerability (USN-2559-1)

Critical Nessus Plugin ID 82659


The remote Ubuntu host is missing one or more security-related patches.


Hanno Bock discovered that Libtasn1 incorrectly handled certain ASN.1 data. A remote attacker could possibly exploit this with specially crafted ASN.1 data and cause applications using Libtasn1 to crash, resulting in a denial of service, or possibly execute arbitrary code.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Update the affected libtasn1-3 and / or libtasn1-6 packages.

Plugin Details

Severity: Critical

ID: 82659

File Name: ubuntu_USN-2559-1.nasl

Version: $Revision: 1.6 $

Type: local

Agent: unix

Published: 2015/04/09

Modified: 2016/05/26

Dependencies: 12634

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libtasn1-3, p-cpe:/a:canonical:ubuntu_linux:libtasn1-6, cpe:/o:canonical:ubuntu_linux:10.04:-:lts, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:14.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/04/08

Reference Information

CVE: CVE-2015-2806

BID: 73436

OSVDB: 120053

USN: 2559-1