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Bug 172589

Summary:	CVE-2005-3353 PHP exif data DoS
Product:	Red Hat Enterprise Linux 4	Reporter:	Josh Bressers <bressers>
Component:	php	Assignee:	Joe Orton <jorton>
Status:	CLOSED ERRATA	QA Contact:	David Lawrence <dkl>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	4.0	Keywords:	Security
Target Milestone:	---
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:	impact=moderate,public=20051002,reported=20051104,source=php
Fixed In Version:	RHSA-2005-831	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2005-11-10 19:07:27 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 2005-11-07 17:48:36 UTC

PHP exif data DoS

An error in the way php processes exif image data has been found.
This flaw will cause PHP to enter an infinite loop when
exif_read_data() against the malicious image.  The PHP process will
continue to consume computing resources until the PHP process is
killed.
http://bugs.php.net/bug.php?id=34704

When run through httpd, the PHP process will eventually timeout and be
killed.  This is only a temporary DoS when PHP is run from httpd..


This issue also affects RHEL3
This issue also affects RHEL2.1

Comment 1 Joe Orton 2005-11-07 18:52:05 UTC

Note this is not actually an infinite loop but an infinite function recursion,
so it causes an immediate process crash rather than a loop-then-timeout.

Comment 2 Mark J. Cox 2005-11-10 09:47:05 UTC

This issue doesn't affect RHEL2.1 as exif_read_data is undefined and as per php
docs this function is available in PHP 4 >= 4.2.0, PHP 5 while RHEL-2.1 contains
4.1.2

Comment 3 Red Hat Bugzilla 2005-11-10 19:07:28 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-2005-831.html