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

vintage KODAK 14" HARD DRIVE PLATTER COMPUTER MAINFRAME 1970s
$139.0
vintage KODAK 14myDOS360 IBM Mainframe on Your PC Software Package - COBOL - FORTRAN
$9.95
myDOS360 IBM Mainframe on Your PC Software Package - COBOL - FORTRAN pictureLot of 2 Computer Punch Cards, IBM 80-Column Format, Mainframe/Mini, Punched
$2.95
Lot of 2 Computer Punch Cards, IBM 80-Column Format, Mainframe/Mini, Punched pictureThe North Face - Mainframe Laptop Backpack - Dark Gray Heather/Zinc Gray
$89.99
The North Face - Mainframe Laptop Backpack - Dark Gray Heather/Zinc Gray picture


Discussions

No Discussions have been posted on this vulnerability.