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-200603-08] GnuPG: Incorrect signature verification


Vulnerability Assessment Details

[GLSA-200603-08] 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-200603-08
(GnuPG: Incorrect signature verification)


OpenPGP is the standard that defines the format of digital
signatures supported by GnuPG. OpenPGP signatures consist of multiple
sections, in a strictly defined order. Tavis Ormandy of the Gentoo
Linux Security Audit Team discovered that certain illegal signature
formats could permit signed data to be modified without detection. GnuPG
has previously attempted to be lenient when processing malformed or
legacy signature formats, but this has now been found to be insecure.

Impact

A remote attacker may be able to construct or modify a
digitally-signed message, potentially permiting them to bypass
authentication systems, or impersonate another user.

Workaround

There is no known workaround at this time.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0049
http://lists.gnupg.org/pipermail/gnupg-announce/2006q1/000216.html


Solution:
All GnuPG users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/gnupg-1.4.2.2"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2006 Michel Arboi

Cables, Connectors

1984 Macintosh 128K M0001 Original Rear Aluminum Case Emblem for 1st Mac NICE
$99.84
1984 Macintosh 128K M0001 Original Rear Aluminum Case Emblem for 1st Mac NICE pictureSeptember 1986 Macworld Magazine Macintosh M0001 1984 128k 512k - Drive Compare
$19.86
September 1986 Macworld Magazine Macintosh M0001 1984 128k 512k - Drive Compare pictureMarch 1985 Macworld Magazine Macintosh M0001 1984 128k 512k - Mac Goes to Movies
$19.87
March 1985 Macworld Magazine Macintosh M0001 1984 128k 512k - Mac Goes to Movies pictureJune 1986 Macworld Magazine Macintosh M0001 1984 128k 512k - The Key To Excel
$19.86
June 1986 Macworld Magazine Macintosh M0001 1984 128k 512k - The Key To Excel picture


Discussions

No Discussions have been posted on this vulnerability.