Information disclosure in PHP

1) Information disclosure

EUVDB-ID: #VU43164

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-2012-6113

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 openssl_encrypt function in ext/openssl/openssl.c in PHP 5.3.9 through 5.3.13 does not initialize a certain variable, which allows remote attackers to obtain sensitive information from process memory by providing zero bytes of input data.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PHP: 5.3.9 - 5.3.13

CPE2.3

• cpe:2.3:a:php_group:php:5.3.13:*:*:*:*:*:*:*

External links

https://git.php.net/?p=php-src.git;a=commit;h=270a406ac94b5fc5cc9ef59fc61e3b4b95648a3e
https://openwall.com/lists/oss-security/2013/01/18/6
https://www.ubuntu.com/usn/USN-1702-1
https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1099793
https://bugs.php.net/bug.php?id=61413

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.