Cryptographic issues in PHP

1) Cryptographic issues

EUVDB-ID: #VU44781

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-2011-3189

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

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

The crypt function in PHP 5.3.7, when the MD5 hash type is used, returns the value of the salt argument instead of the hashed string, which might allow remote attackers to bypass authentication via an arbitrary password, a different vulnerability than CVE-2011-2483.

Mitigation

Install update from vendor's website.

Vulnerable software versions

PHP: 5.3.7

External links

http://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
http://osvdb.org/74726
http://secunia.com/advisories/45678
http://support.apple.com/kb/HT5130
http://www.openwall.com/lists/oss-security/2011/08/23/4
http://www.php.net/archive/2011.php#id2011-08-23-1
http://www.php.net/ChangeLog-5.php#5.3.8
http://bugs.gentoo.org/show_bug.cgi?id=380261
http://bugs.php.net/bug.php?id=55439
http://exchange.xforce.ibmcloud.com/vulnerabilities/69429

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.