#VU16095 Type Confusion in PHP - CVE-2014-4721

Vulnerability identifier: #VU16095

Vulnerability risk: Low

CVSSv4.0: 1.1 [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

Exploit availability: No

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

: 5.4.0 - 5.4.29, 5.5.0 - 5.5.13

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External links
https://bugs.php.net/bug.php?id=67498

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.