PHP 5.6.x < 5.6.19 Multiple Vulnerabilities

critical Web App Scanning Plugin ID 98808

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Synopsis

Description

According to its banner, the version of PHP running on the remote web server is 5.6.x prior to 5.6.19. It is, therefore, affected by multiple vulnerabilities :

- A use-after-free error exists in file ext/wddx/wddx.c in the php_wddx_pop_element() function when handling XML data. An unauthenticated, remote attacker can exploit this, via crafted XML data, to dereference already freed memory, resulting in the execution of arbitrary code. (CVE-2016-3141)

- An out-of-bounds read error exists in file ext/phar/zip.c in the phar_parse_zipfile() function that allows an unauthenticated, remote attacker to cause a denial of service or to gain access to sensitive information. (CVE-2016-3142)

- A NULL pointer dereference flaw exists in file ext/xsl/xsltprocessor.c in the xsl_ext_function_php() function that allows an unauthenticated, remote attacker to cause a denial of service.

- A flaw exists in file sapi/cli/php_cli_server.c due to the built-in HTTP server not properly restricting file requests. An unauthenticated, remote attacker can exploit this to access arbitrary files.

- A use-after-free error exists in Zend Opcache when updating cached directory names that have been cached in the current working directory. An unauthenticated, remote attacker can exploit this to deference already freed memory, resulting in the execution of arbitrary code.

- A NULL pointer dereference flaw exists in file ext/zip/php_zip.c in the Zip::ExtractTo() method that allows an unauthenticated, remote attacker to cause a denial of service.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.