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.
Vulnerability Assessment Details
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.
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.
There is no known workaround at this time.
All GnuPG users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/gnupg-188.8.131.52"
Network Security Threat Level: Medium
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2006 Michel Arboi
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