[ GLSA 200904-08 ] OpenSSL: Denial of Service

[GLSA]

Gentoo Linux Security Advisory

Title: OpenSSL: Denial of Service (GLSA 200904-08)
Severity: normal
Exploitable: remote
Date: April 07, 2009
Bug(s): #263751
ID: 200904-08

Synopsis

An error in OpenSSL might allow for a Denial of Service when printing certificate details.

Background

OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general purpose cryptography library.

Affected Packages

Package: dev-libs/openssl
Vulnerable: < 0.9.8k
Unaffected: >= 0.9.8k
Architectures: All supported architectures


Description

The ASN1_STRING_print_ex() function does not properly check the provided length of a BMPString or UniversalString, leading to an invalid memory access.

Impact

A remote attacker could entice a user or automated system to print a specially crafted certificate, possibly leading to a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All OpenSSL users should upgrade to the latest version: