CVE-2011-3379

HIGH

Description

The is_a function in PHP 5.3.7 and 5.3.8 triggers a call to the __autoload function, which makes it easier for remote attackers to execute arbitrary code by providing a crafted URL and leveraging potentially unsafe behavior in certain PEAR packages and custom autoloaders.

References

http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041

http://securityreason.com/securityalert/8525

http://svn.php.net/viewvc/?view=revision&revision=317183

http://www.byte.nl/blog/2011/09/23/security-bug-in-is_a-function-in-php-5-3-7-5-3-8/

http://www.securityfocus.com/archive/1/519770/30/0/threaded

https://bugs.php.net/bug.php?id=55475

https://bugzilla.redhat.com/show_bug.cgi?id=741020

Details

Source: MITRE

Published: 2011-11-03

Updated: 2012-07-03

Type: CWE-94

Risk Information

CVSS v2.0

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH