What’s Vulnerable › Vulnerabilities

CVE-2014-4721

• Severity: low (CVSS 2.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2014-07-06 · updated 2026-06-17
• Weakness: CWE-200

Description

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.

Affected products

• Debian Linux: 7.0, 8.0
• PHP: from 5.3.0 before 5.3.29; from 5.4.0 before 5.4.30; from 5.5.0 before 5.5.14 — fixed in 5.3.29, 5.4.30, 5.5.14

How to fix

Upgrade to a fixed version: PHP 5.3.29, 5.4.30, 5.5.14. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-updates/2014-07/msg00035.html
• http://lists.opensuse.org/opensuse-updates/2014-09/msg00046.html
• http://rhn.redhat.com/errata/RHSA-2014-1765.html
• http://rhn.redhat.com/errata/RHSA-2014-1766.html
• http://secunia.com/advisories/54553
• http://secunia.com/advisories/59794
• http://secunia.com/advisories/59831
• http://twitter.com/mikispag/statuses/485713462258302976
• http://www-01.ibm.com/support/docview.wss?uid=swg21683486
• http://www.debian.org/security/2014/dsa-2974
• http://www.oracle.com/technetwork/topics/security/bulletinjan2015-2370101.html
• http://www.php.net/ChangeLog-5.php

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