SB2014043003 - Cross-site scripting in vBulletin

Description

This security bulletin contains information about 1 security vulnerability.

1) Cross-site scripting (CVE-ID: CVE-2014-3135)

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in vBulletin 5.1.1 Alpha 9 when processing (1) the PATH_INFO to privatemessage/new/, (2) the folderid parameter to a private message in privatemessage/view, (3) a fragment indicator to /help, or (4) the view parameter to a topic, as demonstrated by a request to forum/anunturi-importante/rst-power/67030-rst-admin-restore. A remote 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/126226/vBulletin-5.1-Cross-Site-Scripting.html
• http://www.securityfocus.com/bid/66972
• https://exchange.xforce.ibmcloud.com/vulnerabilities/92664