Vulnerability Description
The htmlspecialchars function in PHP before 5.2.12 does not properly handle (1) overlong UTF-8 sequences, (2) invalid Shift_JIS sequences, and (3) invalid EUC-JP sequences, which allows remote attackers to conduct cross-site scripting (XSS) attacks by placing a crafted byte sequence before a special character.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Php | Php | <= 5.2.11 |
Related Weaknesses (CWE)
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/37821Vendor Advisory
- http://secunia.com/advisories/38648
- http://secunia.com/advisories/40262
- http://securitytracker.com/id?1023372Exploit
- http://support.apple.com/kb/HT4077
- http://www.debian.org/security/2010/dsa-2001
- http://www.php.net/ChangeLog-5.phpPatch
- http://www.php.net/releases/5_2_12.php
- http://www.securityfocus.com/bid/37389Exploit
- http://www.vupen.com/english/advisories/2009/3593Vendor Advisory
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3
FAQ
What is CVE-2009-4142?
CVE-2009-4142 is a vulnerability with a CVSS score of 4.3 (MEDIUM). The htmlspecialchars function in PHP before 5.2.12 does not properly handle (1) overlong UTF-8 sequences, (2) invalid Shift_JIS sequences, and (3) invalid EUC-JP sequences, which allows remote attacke...
How severe is CVE-2009-4142?
CVE-2009-4142 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2009-4142?
Check the references section above for vendor advisories and patch information. Affected products include: Php Php.