RHEL 6 : libtasn1 (RHSA-2012:0427)

Medium Nessus Plugin ID 58508


The remote Red Hat host is missing one or more security updates.


Updated libtasn1 packages that fix one security issue are now available for Red Hat Enterprise Linux 6.

The Red Hat Security Response Team has rated this update as having important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

libtasn1 is a library developed for ASN.1 (Abstract Syntax Notation One) structures management that includes DER (Distinguished Encoding Rules) encoding and decoding.

A flaw was found in the way libtasn1 decoded DER data. An attacker could create carefully-crafted DER encoded input (such as an X.509 certificate) that, when parsed by an application that uses libtasn1 (such as applications using GnuTLS), could cause the application to crash. (CVE-2012-1569)

Red Hat would like to thank Matthew Hall of Mu Dynamics for reporting this issue.

Users of libtasn1 are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. For the update to take effect, all applications linked to the libtasn1 library must be restarted, or the system rebooted.


Update the affected packages.

See Also



Plugin Details

Severity: Medium

ID: 58508

File Name: redhat-RHSA-2012-0427.nasl

Version: $Revision: 1.10 $

Type: local

Agent: unix

Published: 2012/03/28

Modified: 2017/08/15

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.1

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libtasn1, p-cpe:/a:redhat:enterprise_linux:libtasn1-debuginfo, p-cpe:/a:redhat:enterprise_linux:libtasn1-devel, p-cpe:/a:redhat:enterprise_linux:libtasn1-tools, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:6.2

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2012/03/27

Reference Information

CVE: CVE-2012-1569

BID: 52668

OSVDB: 80258

RHSA: 2012:0427