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Bug 184556

Summary: CVE-2006-0049 Gnupg incorrect malformed message verification
Product: Red Hat Enterprise Linux 4 Reporter: Josh Bressers <bressers>
Component: gnupgAssignee: Nalin Dahyabhai <nalin>
Status: CLOSED ERRATA QA Contact: Mike McLean <mikem>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0Keywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: source=vendorsec,reported=20060305,public=20060309,impact=moderate
Fixed In Version: RHSA-2006-0266 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-03-15 16:32:04 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On:    
Bug Blocks: 185345, 185346    
Attachments:
Description Flags
Demo reproducer none

Description Josh Bressers 2006-03-09 20:29:14 UTC 
Gnupg incorrect malformed message verification

Tavis Ormandy discovered that it is still possible to trick gnupg into
incorrectly verifying a signed message.

The patch is here:
ftp://ftp.gnupg.org/gcrypt/gnupg/gnupg-1.4.2.1-1.4.2.2.diff.bz2


This issue also affects RHEL3
This issue also affects RHEL2.1
Comment 1 Josh Bressers 2006-03-13 14:56:43 UTC 
Created attachment 126039 [details]
Demo reproducer

This reproducer was given to us by Gentoo.

In order to reproduce this issue on RHEL, the --ignore-crc-error option must be
given to gpg.  This also mitigates the usefullness of this issue on RHEL.
Comment 5 Red Hat Bugzilla 2006-03-15 16:32:06 UTC 
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2006-0266.html