CVE-2009-4142
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…
Does this matter?
Lower severity and a low EPSS score (6.50%). Track it; it rarely justifies an emergency change on its own.
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 2.0
- 4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N
- EPSS
- 6.50% probability · 93th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- php/php
- Source
- secalert@redhat.com
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%3Adef%3A10005
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7085
- 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%3Adef%3A10005
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A7085
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.