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Bug 128170

Summary:	CAN-2004-0700 mod_ssl format string vulnerability
Product:	Red Hat Enterprise Linux 2.1	Reporter:	Josh Bressers <bressers>
Component:	mod_ssl	Assignee:	Joe Orton <jorton>
Status:	CLOSED ERRATA	QA Contact:	Brian Brock <bbrock>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	2.1	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2004-09-07 15:37:30 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:

Description Josh Bressers 2004-07-19 16:05:00 UTC

Triggered by a report to Packet Storm [1] from Virulent, a format
  string vulnerability was found in mod_ssl [2], the Apache SSL/TLS
  interface to OpenSSL, version (up to and including) 2.8.18 for Apache
  1.3. The mod_ssl in Apache 2.x is not affected. The vulnerability
  could be exploitable if Apache is used as a proxy for HTTPS URLs and
  the attacker established a own specially prepared DNS and origin
  server environment.

More information here:
http://packetstormsecurity.org/filedesc/modsslFormat.txt.html

We're still investigating if this is actually an issue.

Comment 1 Mark J. Cox 2004-07-27 19:39:30 UTC

An errata is in progress for this issue, but it a low risk.  From the
upcoming advisory text:

"A format string issue was discovered in mod_ssl for Apache 1.3 which
can be triggered if mod_ssl is configured to allow a client to proxy
to remote SSL sites. If mod_ssl is forced to connect to a remote SSL
server using a carefully crafted hostname, an attacker may be able to
crash an Apache child process. This issue is not known to allow
arbitrary execution of code."

Comment 5 Josh Bressers 2004-09-07 15:37:30 UTC

An errata 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-2004-408.html