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PHP 5.6.x < 5.6.19 Denial of Service

Critical

Synopsis

The remote web server uses a version of PHP that is affected by a Denial of Service (DoS) vulnerability.

Description

Versions of PHP 5.6.x prior to 5.6.19 are vulnerable to a NULL pointer dereference flaw in the 'xsl_ext_function_php()' function in 'ext/xsl/xsltprocessor.c'. This may potentially allow a remote attacker to cause a crash. (OSVDB 135344)

Solution

Upgrade to PHP version 5.6.19 or later.