GNU Libtasn1: Denial of Service

2017-03-28T00:00:00
ID GLSA-201703-05
Type gentoo
Reporter Gentoo Foundation
Modified 2017-03-28T00:00:00

Description

Background

A library that provides Abstract Syntax Notation One (ASN.1, as specified by the X.680 ITU-T recommendation) parsing and structures management, and Distinguished Encoding Rules (DER, as per X.690) encoding and decoding functions.

Description

Libtasn1 does not correctly handle certain malformed DER certificates.

Impact

A remote attacker could entice a user or automated system to process a specially crafted certificate using Libtasn1, resulting in a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All Libtasn1 users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=dev-libs/libtasn1-4.8"