Caldera Systems Security Advisory: verification bug in gnupgOct 20, 2000, 07:46 (0 Talkback[s])
Date: Thu, 19 Oct 2000 11:14:17 -0600
Caldera Systems, Inc. Security Advisory Subject: verification bug in gnupg Advisory number: CSSA-2000-038.0 Issue date: 2000 October, 18 Cross reference:
1. Problem Description
There is a bug in the signature verification of GNUpg, the GNU replacement for PGP.
Normally, signature verification with gnupg works as expected; gnupg properly detects when digitally signed data has been tampered with.
However, these checks do not work properly if there are several sections with inline signatures within a single file. In this case, GNUpg does not always detect when some of the signed portions have been modified, and incorrectly claims that all signatures are valid.
2. Vulnerable Versions
System Package ----------------------------------------------------------- OpenLinux Desktop 2.3 not vulnerable OpenLinux eServer 2.3 not vulnerable and OpenLinux eBuilder OpenLinux eDesktop 2.4 All packages previous to gnupg-1.0.4-23. Solution
4. OpenLinux Desktop 2.3
5. OpenLinux eServer 2.3 and OpenLinux eBuilder for ECential 3.0
6. OpenLinux eDesktop 2.4
6.1 Location of Fixed Packages
The upgrade packages can be found on Caldera's FTP site at:
The corresponding source code package can be found at:
3892693d729a46acc587dcece5a59f7c RPMS/gnupg-1.0.4-2.i386.rpm 407234b6c1381ed0e4e22ae99b88ba3f SRPMS/gnupg-1.0.4-2.src.rpm6.3 Installing Fixed Packages
Upgrade the affected packages with the following commands:
rpm -Fhv gnupg-1.0.4-2.i386.rpm
This and other Caldera security resources are located at:
This security fix closes Caldera's internal Problem Report 7996.
Caldera Systems, Inc. is not responsible for the misuse of any of the information we provide on this website and/or through our security advisories. Our advisories are a service to our customers intended to promote secure installation and use of Caldera OpenLinux.
Caldera Systems wishes to thank Werner Koch, the author of GNUpg, for his work, and cooperation.