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PHP Web Form Hash Collision Denial of Service Vulnerability (Windows)
Information
Severity
Severity
Medium
Family
Family
Denial of Service
CVSSv2 Base
CVSSv2 Base
5.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
12 years ago
Modified
Modified
5 years ago
Summary
This host is installed with PHP and is prone to remote denial of service vulnerability.
Insight
Insight
The flaws are due to an error in, - A hash generation function when hashing form posts and updating a hash table. This can be exploited to cause a hash collision resulting in high CPU consumption via a specially crafted form sent in a HTTP POST request. - PDORow implementation, when interacting with the session feature. - timezone functionality, when handling php_date_parse_tzfile cache.
Affected Software
Affected Software
PHP Version 5.3.8 and prior.
Solution
Solution
Upgrade PHP to 5.3.9 or later.
Common Vulnerabilities and Exposures (CVE)
References
- http://secunia.com/advisories/47404
- http://www.kb.cert.org/vuls/id/903934
- https://bugs.php.net/bug.php?id=53502
- https://bugs.php.net/bug.php?id=55776
- http://xforce.iss.net/xforce/xfdb/72021
- http://www.exploit-db.com/exploits/18305/
- http://www.exploit-db.com/exploits/18296/
- http://www.ocert.org/advisories/ocert-2011-003.html
- http://svn.php.net/viewvc?view=revision&revision=321040
- http://php.net/downloads.php