MyBB [url] tag cross-site scripting
| mybb-url-tag-xss (27444) |  Medium Risk |
Description:
MyBB is vulnerable to cross-site scripting, caused by improper validation of user-supplied input. A remote attacker could exploit this vulnerability using Unicode-encoded script embedded within [url] tags in a message posting to execute script in a victim's Web browser within the security context of the hosting Web site, allowing the attacker to steal the victim's cookie-based authentication credentials.
Platforms Affected:
- MyBB, MyBB 1.0 PR2 - 1.1.4
- MyBB, MyBB 1.0 RC2 and later
Remedy:
Upgrade to the latest version of MyBB (1.1.5 or later), available from the MyBB Web site. See References.
Consequences:
Gain Access
References:
- imei Addmimistrator¿s BugBlog Thursday, June 22nd, 2006 , MyBB 1.1.4~function_post.php~XSS Attack In URL tag at http://myimei.com/security/2006-06-22/mybb-114-function_postphpxss-attack-in-url-tag.html.
- MyBB Community Forums, 06-28-2006, MyBB 1.1.5 Released at http://community.mybboard.net/showthread.php?tid=10115.
- MyBB Web site, MyBB Website at http://www.mybboard.com/.
- BID-18702: MyBB Multiple Input Validation Vulnerabilities
- CVE-2006-3761: Cross-site scripting (XSS) vulnerability in inc/functions_post.php in MyBB (aka MyBulletinBoard) 1.0 RC2 through 1.1.4 allows remote attackers to inject arbitrary web script or HTML via a javascript URI with an SGML numeric character reference in the url BBCode tag, as demonstrated using javascript.
- SA20873: MyBB Multiple Vulnerabilities
Reported:
Jun 22, 2006
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