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-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.
A possible hacker may be able to bypass authentication in automated
systems relying on the return code of gpg or gpgv to authenticate
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-220.127.116.11"
Network Security Threat Level: Medium
Networks Security ID:
Vulnerability Assessment Copyright: (C) 2006 Michel Arboi
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