GnuPG: Integer overflow vulnerability

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 200608-08 / gnupg
Release Date	August 05, 2006
Latest Revision	August 08, 2006: 02
Impact	high
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
app-crypt/gnupg	< 1.4.5	>= 1.4.5	All supported architectures

Related bugreports: #142248

Synopsis

GnuPG is vulnerable to an integer overflow that could lead to the execution of arbitrary code.

2. Impact Information

Background

The GNU Privacy Guard, GnuPG, is a free replacement for the PGP suite of cryptographic software.

Description

Evgeny Legerov discovered a vulnerability in GnuPG that when certain packets are handled an integer overflow may occur.

Impact

By sending a specially crafted email to a user running an affected version of GnuPG, a remote attacker could possibly execute arbitrary code with the permissions of the user running GnuPG.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All GnuPG users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose "=app-crypt/gnupg-1.4*"

4. References

CVE-2006-3746

Updated August 05, 2006

Summary: This is a Gentoo Linux Security Advisory

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