#VU45187 Resource management error in PHP - CVE-2011-1468

Vulnerability identifier: #VU45187

Vulnerability risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2011-1468

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

Multiple memory leaks in the OpenSSL extension in PHP before 5.3.6 might allow remote attackers to cause a denial of service (memory consumption) via (1) plaintext data to the openssl_encrypt function or (2) ciphertext data to the openssl_decrypt function.

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 - 5.2.17, 5.3.0 - 5.3.4

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External links
https://bugs.php.net/bug.php?id=54060
https://bugs.php.net/bug.php?id=54061
https://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
https://support.apple.com/kb/HT5002
https://www.mandriva.com/security/advisories?name=MDVSA-2011:053
https://www.php.net/ChangeLog-5.php
https://www.redhat.com/support/errata/RHSA-2011-1423.html
https://www.securityfocus.com/bid/46977
https://www.vupen.com/english/advisories/2011/0744

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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. However, proof of concept for this vulnerability is available.