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OpenSSL: Denial of Service


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200904-08 / openssl
Release Date April 07, 2009
Latest Revision April 07, 2009: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-libs/openssl < 0.9.8k >= 0.9.8k All supported architectures

Related bugreports: #263751


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

2.  Impact Information


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.


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


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

3.  Resolution Information


There is no known workaround at this time.


All OpenSSL users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8k"

4.  References


Page updated April 07, 2009

Summary: This is a Gentoo Linux Security Advisory

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