Joomla CMS up to 3.8.1 2FA improper authentication

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.
8.2	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Joomla CMS. This affects an unknown part of the component 2FA. The manipulation leads to improper authentication. This vulnerability is referenced as CVE-2017-16634. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Joomla CMS (Content Management System) and classified as critical. This issue affects some unknown functionality of the component 2FA. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In Joomla! before 3.8.2, a bug allowed third parties to bypass a user's 2-factor authentication method.

The bug was discovered 11/07/2017. The weakness was published 11/10/2017 (Website). The advisory is shared at developer.joomla.org. The identification of this vulnerability is CVE-2017-16634 since 11/06/2017. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 104478 (Joomla! 1.5.0 < 3.8.2 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 154014 (Joomla! Core - 2-factor-authentication bypass).

Upgrading to version 3.8.2 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (104478) and SecurityFocus (BID 101701†). Similar entry is available at VDB-109264. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• Joomla

Name

• CMS

Version

• 3.2.0
• 3.2.1
• 3.2.2
• 3.2.3
• 3.2.4
• 3.2.6
• 3.2.7
• 3.3.0
• 3.3.1
• 3.3.2
• 3.3.3
• 3.3.4
• 3.3.5
• 3.3.6
• 3.4.0
• 3.4.1
• 3.4.2
• 3.4.3
• 3.4.4
• 3.4.5
• 3.4.6
• 3.4.7
• 3.4.8
• 3.5.0
• 3.5.1
• 3.6.0
• 3.6.1
• 3.6.2
• 3.6.3
• 3.6.4
• 3.6.5
• 3.7.0
• 3.7.1
• 3.7.2
• 3.7.3
• 3.7.4
• 3.7.5
• 3.8.1

License

• open-source

Website

• Vendor: https://www.joomla.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
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

Nessus ID: 104478
Nessus Name: Joomla! 1.5.0 < 3.8.2 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 63843
OpenVAS Name: Joomla! Core Two-factor Authentication Bypass Vulnerability Nov17
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: CMS 3.8.2

Timelineinfo

11/06/2017 🔍
11/07/2017 +1 days 🔍
11/07/2017 +0 days 🔍
11/07/2017 +0 days 🔍
11/09/2017 +2 days 🔍
11/09/2017 +0 days 🔍
11/10/2017 +1 days 🔍
11/10/2017 +0 days 🔍
01/23/2021 +1170 days 🔍

Sourcesinfo

Vendor: joomla.org

Advisory: developer.joomla.org
Researcher: Yarince
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-16634 (🔍)
GCVE (CVE): GCVE-0-2017-16634
GCVE (VulDB): GCVE-100-109265
SecurityFocus: 101701 - Joomla! CVE-2017-16634 Security Bypass Vulnerability
SecurityTracker: 1039757

See also: 🔍

Entryinfo

Created: 11/10/2017 12:36
Updated: 01/23/2021 09:56
Changes: 11/10/2017 12:36 (75), 05/31/2020 16:39 (5), 01/23/2021 09:54 (2), 01/23/2021 09:56 (1)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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