Bug 430527 (CVE-2004-0492)

Summary:	CVE-2004-0492 httpd mod_proxy buffer overflow
Product:	[Other] Security Response	Reporter:	Mark J. Cox <mjc>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jlieskov, jorton, vdanen
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	http://nvd.nist.gov/nvd.cfm?cvename=CVE-2004-0492
Whiteboard:
Fixed In Version:	httpd 1.3.32	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2010-12-21 23:00:08 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:	125704
Bug Blocks:

Description Mark J. Cox 2008-01-28 16:27:50 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2004-0492 to the following vulnerability:

Heap-based buffer overflow in proxy_util.c for mod_proxy in Apache 1.3.25 to 1.3.31 allows remote attackers to cause a denial of service (process crash) and possibly execute arbitrary code via a negative Content-Length HTTP header field, which causes a large amount of data to be copied.

References:

http://seclists.org/lists/fulldisclosure/2004/Jun/0296.html
http://www.guninski.com/modproxy1.html
http://marc.theaimsgroup.com/?l=bugtraq&m=108711172710140&w=2
http://www.debian.org/security/2004/dsa-525
https://bugzilla.fedora.us/show_bug.cgi?id=1737
http://www.mandriva.com/security/advisories?name=MDKSA-2004:065
http://rhn.redhat.com/errata/RHSA-2004-245.html
ftp://patches.sgi.com/support/free/security/advisories/20040605-01-U.asc
http://sunsolve.sun.com/search/document.do?assetkey=1-26-57628-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101555-1
http://sunsolve.sun.com/search/document.do?assetkey=1-26-101841-1
http://www.kb.cert.org/vuls/id/541310
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:4863
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:100112
http://secunia.com/advisories/11841
http://xforce.iss.net/xforce/xfdb/16387

Comment 1 Mark J. Cox 2008-01-28 16:28:56 UTC

A security issue has been reported in mod_proxy.  See

http://www.guninski.com/modproxy1.html

We have assigned CAN-2004-0492 to this issue.

The flaw affects Apache httpd 1.3.25 to 1.3.31 inclusive that have
mod_proxy enabled and configured.  Apache httpd 2.0 is unaffected.

The security issue is a buffer overflow which can be triggered by
getting mod_proxy to connect to a remote server which returns an
invalid (negative)  Content-Length.  This results in a memcpy to the
heap with a large length value, which will in most cases cause the
Apache child to crash.  This does not represent a significant Denial
of Service attack as requests will continue to be handled by other
Apache child processes.

In order to exploit this issue an attacker would need to get an
Apache installation that was configured as a proxy to connect to a
malicious site.

For Red Hat Enterprise Linux we do not believe that this issue can
lead to arbitrary code execution. 

A patch to correct this issue is available.  See:
http://marc.theaimsgroup.com/?l=apache-httpd-dev&m=108687304202140

Public Jun10

Comment 2 Vincent Danen 2010-12-21 23:00:08 UTC

This was addressed via:

Red Hat Enterprise Linux version 2.1 (RHSA-2004:245)