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GnuPG Unsigned Data Injection Detection Vulnerability
Secunia Advisory: SA19173
Release Date: 2006-03-10
Popularity: 9,835 views

Critical:
Moderately critical
Impact: Security Bypass
Where: From remote
Solution Status: Vendor Patch

Software:GnuPG / gpg 1.0.x
GnuPG / gpg 1.2.x
GnuPG / gpg 1.3.x
GnuPG / gpg 1.4.x

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CVE reference:CVE-2006-0049


Description:
A vulnerability has been reported in GnuPG, which can be exploited by malicious people to bypass certain security restrictions.

The vulnerability is caused due to an error in the detection of unsigned data. This makes it possible to inject arbitrary data into a signed message and affects the verification of non-detached signatures and signatures embedded in encrypted messages.

The vulnerability affects all versions prior to 1.4.2.2. Version 1.9.x (development branch) is not affected unless the deprecated gpg part has been enabled.

Solution:
Update to version 1.4.2.2 or later.
http://www.gnupg.org/download/

Provided and/or discovered by:
The vendor credits Tavis Ormandy.

Original Advisory:
http://lists.gnupg.org/pipermail/gnupg-announce/2006q1/000216.html


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