VDB-96366 · CVE-2016-9421 · BID 94396

MyBB/MyBB Merge System up to 1.8.7 Admin Control Panel cross site scripting

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.9	$0-$5k	0.00

A vulnerability, which was classified as problematic, was found in MyBB and MyBB Merge System up to 1.8.7 (Content Management System). Affected is an unknown code of the component Admin Control Panel. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

The bug was discovered 01/31/2017. The weakness was released 01/31/2017 (Website). The advisory is available at openwall.com. This vulnerability is traded as CVE-2016-9421 since 11/17/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 1.8.8 eliminates this vulnerability.

Entries connected to this vulnerability are available at 96323, 96324, 96325 and 96326.

Productinfo

Type

Content Management System

Name

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-74 / CWE-707
ATT&CK: T1059.007

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: MyBB/MyBB Merge System 1.8.8

Timelineinfo

11/10/2016 🔍
11/17/2016 +7 days 🔍
01/31/2017 +75 days 🔍
01/31/2017 +0 days 🔍
01/31/2017 +0 days 🔍
02/01/2017 +1 days 🔍
08/08/2020 +1284 days 🔍

Sourcesinfo

Product: mybb.com

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9421 (🔍)
SecurityFocus: 94396 - MyBB Versions Prior To 1.8.8 Multiple Security Vulnerabilities
OSVDB: - CVE-2016-9421 - MyBB - Multiple Products - Cross-Site Scripting Issue

See also: 🔍

Entryinfo

Created: 02/01/2017 07:17
Updated: 08/08/2020 18:26
Changes: 02/01/2017 07:17 (59), 08/08/2020 18:26 (6)
Complete: 🔍