Bug 977463 (CVE-2013-4636)

Summary:	CVE-2013-4636 php: fileinfo: Invalid pointer dereference when checking mimetype of certain MP3 files
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bgollahe, drieden, fedora, hhorak, jorton, rcollet, rpm, webstack-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-06-26 05:36:51 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:	977464

Description Jan Lieskovsky 2013-06-24 15:43:17 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2013-4636 to the following vulnerability:

The mget function in libmagic/softmagic.c in the Fileinfo component in PHP 5.4.x before 5.4.16 allows remote attackers to cause a denial of service (invalid pointer dereference and application crash) via an MP3 file that triggers incorrect MIME type detection during access to an finfo object.

References:
[1] http://www.php.net/ChangeLog-5.php
[2] https://bugs.php.net/bug.php?id=64830

Relevant upstream patch:
[3] http://git.php.net/?p=php-src.git;a=commit;h=74555e7c26b2c61bb8e67b7d6a6f4d2b8eb3a5f3

Comment 2 Huzaifa S. Sidhpurwala 2013-06-26 05:33:43 UTC

This issue was caused by the following upstream commit, which was applied between php-5.4.14 and php-5.4.15 releases:

http://git.php.net/?p=php-src.git;a=commit;h=10367fa7c6a4a2cf9bee02d8905e284185428f09

This commit upgrades the embedded version of libmagic to 5.14.
The versions of php and php53 as shipped with Red Hat Enterprise Linux 5 and 6, do not contain this commit and therefore are not affected by this flaw.

This issue was addressed in Fedora-18 via the following update:
https://admin.fedoraproject.org/updates/FEDORA-2013-10255

Comment 4 Huzaifa S. Sidhpurwala 2013-06-26 05:36:51 UTC

Statement:

Not Vulnerable. This issue does not affect the version of php as shipped with Red Hat Enterprise Linux 5 and 6. This issue does not affect the version of php53 as shipped with Red Hat Enterprise Linux 5.