#VU110375 Link following in PHP - CVE-2007-4652

Vulnerability identifier: #VU110375

Vulnerability risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2007-4652

CWE-ID: CWE-59

Exploitation vector: Local

Exploit availability: Yes

Vulnerable software:
PHP
Universal components / Libraries / Scripting languages

Vendor: PHP Group

Description

The vulnerability allows a local user to read and manipulate data.

The session extension in PHP before 5.2.4 might allow local users to bypass open_basedir restrictions via a session file that is a symlink.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 1.0, 2.0, 2.0b10, 3.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.0.6, 3.0.7, 3.0.8, 3.0.9, 3.0.10, 3.0.11, 3.0.12, 3.0.13, 3.0.14, 3.0.15, 3.0.16, 3.0.17, 3.0.18, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4, 4.0.5, 4.0.6, 4.0.7, 4.1, 4.1.1, 4.1.2, 4.2, 4.2.1, 4.2.2, 4.2.3, 4.3, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.3.6, 4.3.7, 4.3.8, 4.3.9, 4.3.10, 4.3.11, 4.4, 4.4.1, 4.4.2, 4.4.3, 4.4.4, 4.4.5, 4.4.6, 4.4.7, 4.4.8, 4.4.9, 5.0.0, 5.0.1, 5.0.2, 5.0.3, 5.0.4, 5.0.5, 5.1.0, 5.1.1, 5.1.2, 5.1.3, 5.1.4, 5.1.5, 5.1.6, 5.2, 5.2.1, 5.2.2

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External links
https://secunia.com/advisories/26642
https://secunia.com/advisories/26822
https://secunia.com/advisories/26838
https://secunia.com/advisories/27102
https://secunia.com/advisories/27377
https://www.gentoo.org/security/en/glsa/glsa-200710-02.xml
https://www.php.net/ChangeLog-5.php#5.2.4
https://www.php.net/releases/5_2_4.php
https://www.trustix.org/errata/2007/0026/
https://www.vupen.com/english/advisories/2007/3023
https://exchange.xforce.ibmcloud.com/vulnerabilities/36387
https://issues.rpath.com/browse/RPL-1693
https://issues.rpath.com/browse/RPL-1702

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

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.