Information Disclosure (phpinfo())

Summary #

Netsparker identified an information disclosure (phpinfo()).

phpinfo() is a debug functionality that prints out detailed information on both the system and the PHP configuration.

Impact #

An attacker can obtain information such as:

Exact PHP version.
Exact OS and its version.
Details of the PHP configuration.
Internal IP addresses.
Server environment variables.
Loaded PHP extensions and their configurations.

This information can help an attacker gain more information on the system. After gaining detailed information, the attacker can research known vulnerabilities for that system under review. The attacker can also use this information during the exploitation of other vulnerabilities.

Actions To Take #

Remove pages that call phpinfo() from the web server.

Classifications #

CAPEC-346, CWE-213, ISO27001-A.18.1.3, WASC-13, OWASP 2013-A6, OWASP 2017-A3

Netsparker Security Insights #

Netsparker Will Be Sponsoring and Exhibiting at the PHPKonf 2019 in Istanbul
Sven Morgenroth Talks About PHP Object Injection Vulnerabilities on Paul's Security Weekly Podcast
End of Support for PHP 5 and PHP 7.0
The Powerful Resource of PHP Stream Wrappers
Sven Morgenroth Talks About PHP Type Juggling on Paul's Security Weekly Podcast

Helpful Use Cases #

Choosing the Right PHP Security Scanner