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OpenSSL: Multiple vulnerabilities

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200710-06 / openssl
Release Date October 07, 2007
Latest Revision October 07, 2007: 01
Impact high
Exploitable local, remote
Package Vulnerable versions Unaffected versions Architecture(s)
dev-libs/openssl < 0.9.8e-r3 >= 0.9.8e-r3 All supported architectures

Related bugreports: #188799, #194039

Synopsis

A buffer underflow vulnerability and an information disclosure vulnerability have been discovered in OpenSSL.

2.  Impact Information

Background

OpenSSL is an implementation of the Secure Socket Layer and Transport Layer Security protocols.

Description

Moritz Jodeit reported an off-by-one error in the SSL_get_shared_ciphers() function, resulting from an incomplete fix of CVE-2006-3738. A flaw has also been reported in the BN_from_montgomery() function in crypto/bn/bn_mont.c when performing Montgomery multiplication.

Impact

A remote attacker sending a specially crafted packet to an application relying on OpenSSL could possibly execute arbitrary code with the privileges of the user running the application. A local attacker could perform a side channel attack to retrieve the RSA private keys.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All OpenSSL users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/openssl-0.9.8e-r3"

4.  References



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Page updated October 07, 2007

Summary: This is a Gentoo Linux Security Advisory

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