TITLE:
GnuPG Unsigned Data Injection Detection Vulnerability

SECUNIA ADVISORY ID:
SA19173

VERIFY ADVISORY:
http://secunia.com/advisories/19173/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass

WHERE:
>From remote

SOFTWARE:
GnuPG / gpg 1.0.x
http://secunia.com/product/2573/
GnuPG / gpg 1.2.x
http://secunia.com/product/309/
GnuPG / gpg 1.3.x
http://secunia.com/product/2591/
GnuPG / gpg 1.4.x
http://secunia.com/product/8087/

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

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------