The phpinfo implementation in ext/standard/info.c in PHP before 5.4.30 and 5.5.x before 5.5.14 does not ensure use of the string data type for the PHP_AUTH_PW, PHP_AUTH_TYPE, PHP_AUTH_USER, and PHP_SELF variables, which might allow context-dependent attackers to obtain sensitive information from process memory by using the integer data type with crafted values, related to a “type confusion” vulnerability, as demonstrated by reading a private SSL key in an Apache HTTP Server web-hosting environment with mod_ssl and a PHP 5.3.x mod_php.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4721
Reference (s):
- http://www-01.ibm.com/support/docview.wss?uid=swg21683486
- http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
- http://www.php.net/ChangeLog-5.php
- https://bugs.php.net/bug.php?id=67498
- DEBIAN:DSA-2974