#VU110519 Input validation error in PHP - CVE-2004-0958

Vulnerability identifier: #VU110519

Vulnerability risk: Medium

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

CVE-ID: CVE-2004-0958

CWE-ID: CWE-20

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 gain access to sensitive information.

php_variables.c in PHP before 5.0.2 allows remote attackers to read sensitive memory contents via (1) GET, (2) POST, or (3) COOKIE GPC variables that end in an open bracket character, which causes PHP to calculate an incorrect string length.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PHP: 5.0, 5.0.0, 5.0.1

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External links
https://archives.neohapsis.com/archives/vulnwatch/2004-q3/0053.html
https://marc.info/?l=bugtraq&m=109527531130492&w=2
https://secunia.com/advisories/12560/
https://securitytracker.com/id?1011279
https://www.redhat.com/support/errata/RHSA-2004-687.html
https://bugzilla.fedora.us/show_bug.cgi?id=2344
https://exchange.xforce.ibmcloud.com/vulnerabilities/17393
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10863

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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.