Type Confusion in PHP - CVE-2014-4721
Published: November 27, 2018
Vulnerability identifier: #VU16095
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2014-4721
CWE-ID: CWE-843
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: PHP Group
Affected software:
PHP
PHP
Detailed vulnerability description
The vulnerability allows a local attacker to obtain potentially sensitive information on the target system.
The vulnerability exists due to a type confusion error when 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. A local attacker can use the integer data type with crafted values, 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 and obtain sensitive information.
How to mitigate CVE-2014-4721
Install updates from vendor's website.