Information disclosure in PHP

1) Information disclosure

EUVDB-ID: #VU42031

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-1171

CWE-ID: CWE-200 - Information exposure

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

External links

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