Vulnerability Assessment & Network Security Forums



If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important.  If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.


Home >> Browse Vulnerability Assessment Database >> Gentoo Local Security Checks >> [GLSA-200602-10] GnuPG: Incorrect signature verification


Vulnerability Assessment Details

[GLSA-200602-10] GnuPG: Incorrect signature verification

Vulnerability Assessment Summary
GnuPG: Incorrect signature verification

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200602-10
(GnuPG: Incorrect signature verification)


Tavis Ormandy of the Gentoo Linux Security Auditing Team
discovered that automated systems relying on the return code of GnuPG
or gpgv to authenticate digital signatures may be misled by malformed
signatures. GnuPG documentation states that a return code of zero (0)
indicates success, however gpg and gpgv may also return zero if no
signature data was found in a detached signature file.

Impact

A possible hacker may be able to bypass authentication in automated
systems relying on the return code of gpg or gpgv to authenticate
digital signatures.

Workaround

There is no known workaround at this time.

References:
http://lists.gnupg.org/pipermail/gnupg-announce/2006q1/000211.html
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0455


Solution:
All GnuPG users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/gnupg-1.4.2.1"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2006 Michel Arboi

Cables, Connectors

Measurement Computing PCI-DDA02/12 2-Channel, 12-Bit Analog Output Board With 48
$100.0
Measurement Computing PCI-DDA02/12 2-Channel, 12-Bit Analog Output Board With 48 pictureJune 1987 and July 1988 Analog Computing Magazine Atari Computers
$9.99
June 1987 and July 1988 Analog Computing Magazine Atari Computers pictureHeadset Adapter 2 X 3.5mm Female Jack to USB Plug for Analog Headset to Computer
$18.95
Headset Adapter 2 X 3.5mm Female Jack to USB Plug for Analog Headset to Computer pictureComputer Boards Inc CIO-DAS8JR/16 Digital I/O Analog Input Board 508-261-1123
$299.95
Computer Boards Inc CIO-DAS8JR/16 Digital I/O Analog Input Board 508-261-1123 picture


Discussions

No Discussions have been posted on this vulnerability.