Cross-site scripting in PHP - CVE-2007-1454

Detailed vulnerability description

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 passed via "ext/filter" when certain whitespace characters, which passes one filter but is collapsed into a valid tag, as demonstrated using %0b. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website .

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.

How to mitigate CVE-2007-1454

Sources

• http://secunia.com/advisories/25056
• http://secunia.com/advisories/25062
• http://www.debian.org/security/2007/dsa-1283
• http://www.mandriva.com/security/advisories?name=MDKSA-2007:090
• http://www.novell.com/linux/security/advisories/2007_32_php.html
• http://www.php-security.org/MOPB/MOPB-18-2007.html
• http://www.securityfocus.com/bid/22914