Cross-site scripting in PHP - CVE-2009-4142
Published: October 30, 2018 / Updated: June 9, 2025
Vulnerability identifier: #VU110314
CSH Severity: Medium
CVSS v4: []
CVE-ID: CVE-2009-4142
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data. The vulnerability allows remote attackers to conduct cross-site scripting (XSS) attacks by placing a crafted byte sequence before a special character.
Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.
Affected software
PHP
Slackware Linux
php
Slackware Linux
php
How to mitigate CVE-2009-4142
Install update from vendor's website.
PHP - addressed in versions 4.10, 5.2.11
php - update to 5.2.12
php - update to 5.2.12
Links to Public Exploits and PoC-codes
External References
- http://bugs.php.net/bug.php?id=49785
- http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
- http://marc.info/?l=bugtraq&m=127680701405735&w=2
- http://secunia.com/advisories/37821
- http://secunia.com/advisories/38648
- http://secunia.com/advisories/40262
- http://securitytracker.com/id?1023372
- http://support.apple.com/kb/HT4077
- http://www.debian.org/security/2010/dsa-2001
- http://www.php.net/ChangeLog-5.php
- http://www.php.net/releases/5_2_12.php
- http://www.securityfocus.com/bid/37389
- http://www.vupen.com/english/advisories/2009/3593
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10005
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7085