Information disclosure in PHP

1) Information disclosure

EUVDB-ID: #VU42031

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-1171

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The libxml RSHUTDOWN function in PHP 5.x allows remote attackers to bypass the open_basedir protection mechanism and read arbitrary files via vectors involving a stream_close method call during use of a custom stream wrapper.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PHP: 5.0.0 - 5.5.6

CPE2.3

• cpe:2.3:a:php_group:php:5.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.3:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.4:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:php_group:php:5.1.3:*:*:*:*:*:*:*

External links

https://bugs.php.net/bug.php?id=61367
https://bugzilla.redhat.com/show_bug.cgi?id=802591
https://github.com/php/php-src/blob/master/ext/libxml/tests/bug61367-read.phpt
https://github.com/php/php-src/blob/master/ext/libxml/tests/bug61367-write.phpt

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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