Vulnerability identifier: #VU45390
Vulnerability risk: Medium
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
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 manipulate data.
The extract function in PHP before 5.2.15 does not prevent use of the EXTR_OVERWRITE parameter to overwrite (1) the GLOBALS superglobal array and (2) the this variable, which allows context-dependent attackers to bypass intended access restrictions by modifying data structures that were not intended to depend on external input, a related issue to CVE-2005-2691 and CVE-2006-3758.
Mitigation
Install update from vendor's website.
Vulnerable software versions
PHP: 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 - 5.2.13
External links
http://marc.info/?l=bugtraq&m=133469208622507&w=2
http://www.openwall.com/lists/oss-security/2010/12/13/4
http://www.php.net/archive/2010.php#id2010-12-10-1
http://www.php.net/ChangeLog-5.php
http://www.php.net/releases/5_2_15.php
http://exchange.xforce.ibmcloud.com/vulnerabilities/65432
http://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12016
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.