#VU44780 Buffer overflow in PHP - CVE-2011-3268

Vulnerability identifier: #VU44780

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2011-3268

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Buffer overflow in the crypt function in PHP before 5.3.7 allows context-dependent attackers to have an unspecified impact via a long salt argument, a different vulnerability than CVE-2011-2483.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 1.0, 2.0b10, 2.0, 3.0 - 3.0.18, 4.0 - 4.0.7, 4.1.0 - 4.1.2, 4.2.0 - 4.2.3, 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.14, 5.3.0 - 5.3.5

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External links
https://lists.apple.com/archives/security-announce/2012/Feb/msg00000.html
https://osvdb.org/74738
https://support.apple.com/kb/HT5130
https://svn.php.net/viewvc/php/php-src/branches/PHP_5_3/ext/standard/php_crypt_r.c?r1=311300&r2=311390&pathrev=315218
https://www.mandriva.com/security/advisories?name=MDVSA-2011:165
https://www.php.net/archive/2011.php#id2011-08-18-1
https://www.php.net/ChangeLog-5.php#5.3.7
https://www.securityfocus.com/bid/49241
https://exchange.xforce.ibmcloud.com/vulnerabilities/69427

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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.