#VU45183 Buffer overflow in PHP - CVE-2011-1464

Vulnerability identifier: #VU45183

Vulnerability risk: Medium

CVSSv4.0: 2.7 [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:U/U:Green]

CVE-ID: CVE-2011-1464

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 perform service disruption.

Buffer overflow in the strval function in PHP before 5.3.6, when the precision configuration option has a large value, might allow context-dependent attackers to cause a denial of service (application crash) via a small numerical value in the argument.

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

---

External links
https://bugs.php.net/bug.php?id=54055
https://marc.info/?l=bugtraq&m=133469208622507&w=2
https://www.mandriva.com/security/advisories?name=MDVSA-2011:052
https://www.mandriva.com/security/advisories?name=MDVSA-2011:053
https://www.php.net/archive/2011.php
https://www.php.net/ChangeLog-5.php
https://www.php.net/releases/5_3_6.php
https://www.vupen.com/english/advisories/2011/0744

---

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.