MyBB 1.8.6 Login cleartext storage

HistoryDiffrelatejsonxmlCTI

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.
3.9	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in MyBB 1.8.6. Affected by this vulnerability is an unknown functionality of the component Login. This manipulation causes cleartext storage. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability classified as problematic was found in MyBB 1.8.6 (Content Management System). Affected by this vulnerability is an unknown functionality of the component Login. The manipulation with an unknown input leads to a cleartext storage vulnerability. The CWE definition for the vulnerability is CWE-312. The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere. As an impact it is known to affect integrity.

The weakness was shared 09/15/2016 with Curesec Research Team as not defined mailinglist post (Full-Disclosure). The advisory is shared at seclists.org. 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 are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1555 for this issue.

After immediately, there has been an exploit disclosed. It is possible to download the exploit at seclists.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 230 days. During that time the estimated underground price was around $5k-$25k. The code used by the exploit is:

<html> <body> <form action="http://localhost/mybb_1806/Upload/member.php";
method="POST"> <input type="hidden" name="action" value="do_login" /> <input
type="hidden" name="url" value="http://localhost/mybb_1806/Upload/index.php"; />
<input type="hidden" name="quick_login" value="1" /> <input type="hidden" name=
"quick_username" value="admin" /> <input type="hidden" name="quick_password"
value="admin" /> <input type="hidden" name="quick_remember" value="yes" />
<input type="hidden" name="submit" value="Login" /> <input type="submit" value=
"Submit request" /> </form> </body> </html>

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

Additional details are provided at curesec.com. The entries VDB-91730 and VDB-91731 are related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Content Management System

Name

MyBB

Version

1.8.6

License

open-source

Website

Product: https://mybb.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Cleartext storage
CWE: CWE-312 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
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: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

01/29/2016 🔍
02/26/2016 +28 days 🔍
09/15/2016 +202 days 🔍
09/15/2016 +0 days 🔍
09/21/2016 +6 days 🔍
04/21/2019 +942 days 🔍

Sourcesinfo

Product: mybb.com

Advisory: seclists.org
Organization: Curesec Research Team
Status: Not defined

GCVE (VulDB): GCVE-100-91729
scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 09/21/2016 11:47
Updated: 04/21/2019 10:35
Changes: 09/21/2016 11:47 (46), 04/21/2019 10:35 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.