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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)