Bug 207276

Summary: CVE-2006-2937 OpenSSL ASN1 DoS
Product: Red Hat Enterprise Linux 4 Reporter: Mark J. Cox <mjc>
Component: opensslAssignee: Tomas Mraz <tmraz>
Status: CLOSED ERRATA QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 4.0CC: security-response-team
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: reported=20060703,source=openssl,impact=important,public=20060928
Fixed In Version: RHSA-2006-0695 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2006-09-29 00:06:16 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: 209116, 430655    
Attachments:
Description Flags
proposed patch CVE-2006-2937 none

Description Mark J. Cox 2006-09-20 11:50:38 UTC 
Dr S N Henson of the OpenSSL core team and Open Network Security recently
developed an ASN1 test suite for NISCC (www.niscc.gov.uk). When the test suite
was run against OpenSSL a denial of service vulnerability was discovered.

During the parsing of certain invalid ASN1 structures an error condition is
mishandled. This can result in an infinite loop which consumes system memory. 
CVE-2006-2938

Any code which uses OpenSSL to parse ASN1 data from untrusted sources is
affected. This includes SSL servers which enable client authentication and
S/MIME applications.

This issue affects 0.9.7 and 0.9.8 but not 0.9.6 and earlier

Embargo until 20060928
Comment 1 Mark J. Cox 2006-09-20 11:50:38 UTC 
Created attachment 136729 [details]
proposed patch CVE-2006-2937
Comment 4 Mark J. Cox 2006-09-28 13:27:28 UTC 
removing embargo, public at http://www.openssl.org/news/secadv_20060928.txt
Comment 5 Red Hat Bugzilla 2006-09-29 00:06:16 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-2006-0695.html