SB2014102502 - Cross-site scripting in vBulletin

Description

This security bulletin contains information about 1 security vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2014-2021)

Vulnerability allows a remote attacker to perform Cross-site scripting attacks.

An input validation error exists in admincp/apilog.php in vBulletin 4.2.2 and earlier, and 5.0.x through 5.0.5. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in victim's browser in security 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.

Remediation

Install update from vendor's website.

References

• http://packetstormsecurity.com/files/128691/vBulletin-5.x-4.x-Persistent-Cross-Site-Scripting.html
• http://seclists.org/fulldisclosure/2014/Oct/55
• http://seclists.org/fulldisclosure/2014/Oct/63
• http://www.securityfocus.com/bid/70577
• http://www.securitytracker.com/id/1031000
• https://exchange.xforce.ibmcloud.com/vulnerabilities/97026
• https://github.com/tintinweb/pub/tree/master/pocs/cve-2014-2021