MyBB up to 1.20 usercp.php gallery cross site scripting

Summaryinfo

A vulnerability was found in MyBB. It has been rated as problematic. Affected is an unknown function of the file usercp.php. This manipulation of the argument gallery causes cross site scripting. This vulnerability is handled as CVE-2006-3953. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in MyBB (Content Management System). Affected by this vulnerability is an unknown function of the file usercp.php. The manipulation of the argument gallery with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. As an impact it is known to affect integrity. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in usercp.php in MyBB (aka MyBulletinBoard) 1.x allows remote attackers to inject arbitrary web script or HTML via the gallery parameter.

The weakness was released 08/01/2006 by Roozbeh Afrasiabi as not defined posting (Bugtraq). It is possible to read the advisory at securityfocus.com. This vulnerability is known as CVE-2006-3953 since 08/01/2006. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details and also a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. By approaching the search of inurl:usercp.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 19193†). Entry connected to this vulnerability is available at VDB-31592. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Content Management System

Name

• MyBB

Version

• 1.0 Final
• 1.0 Pr2
• 1.0 Preview Release 2
• 1.0 Rc2
• 1.0 Rc4
• 1.0.1
• 1.0.2
• 1.0.3
• 1.0.4
• 1.00 Rc1
• 1.00 Rc2
• 1.00 Rc3
• 1.00 Rc4
• 1.00 Rc4 Security Patch
• 1.01
• 1.04
• 1.1
• 1.1.1
• 1.1.2
• 1.1.3
• 1.1.4
• 1.1.5
• 1.1.7
• 1.10
• 1.14
• 1.20

License

• open-source

Website

• Product: https://mybb.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

Discussion