PHP Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2009-4142 - Vulnerability Database

PHP

PHP Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2009-4142

Medium

Reference: CVE-2009-4142

NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2009-4142

Title: PHP Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability

Overview:

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.