CVE-2011-3379
HIGH severity · CVSS 7.5 · Code injection
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)5%
AV:N/AC:L/Au:N/C:P/I:P/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://svn.php.net/viewvc/?view=revision&revision=317183 ↗
Additional information
- NVD record
- http://svn.php.net/viewvc/?view=revision&revision=317183Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=741020Patch
- http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
- http://securityreason.com/securityalert/8525
- http://www.securityfocus.com/archive/1/519770/30/0/threaded
- http://www.byte.nl/blog/2011/09/23/security-bug-in-is_a-function-in-php-5-3-7-5-3-8/Exploit
- https://bugs.php.net/bug.php?id=55475Exploit