Moodle 2.x/3.x Web Service access control

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Moodle 2.x/3.x. This affects an unknown function of the component Web Service. The manipulation leads to access control. This vulnerability is documented as CVE-2016-8643. The attack can be initiated remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Moodle 2.x/3.x (Learning Management Software). It has been rated as critical. This issue affects some unknown functionality of the component Web Service. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In Moodle 2.x and 3.x, non-admin site managers may accidentally edit admins via web services.

The bug was discovered 11/21/2016. The weakness was released 01/20/2017 (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2016-8643 since 10/12/2016. The attack may be initiated remotely. A simple authentication is required for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 94905 (FreeBSD : moodle -- multiple vulnerabilities (f6565fbf-ab9e-11e6-ae1b-002590263bf5)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276431 (Fedora Security Update for moodle (FEDORA-2017-6681f94e10)).

Upgrading 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 (94905) and SecurityFocus (BID 94457†). Entries connected to this vulnerability are available at VDB-95740, VDB-95742, VDB-95744 and VDB-95745. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 94905
Nessus Name: FreeBSD : moodle -- multiple vulnerabilities (f6565fbf-ab9e-11e6-ae1b-002590263bf5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for moodle FEDORA-2017-ae7a707032
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/12/2016 🔍
11/16/2016 +35 days 🔍
11/16/2016 +0 days 🔍
11/21/2016 +5 days 🔍
11/21/2016 +0 days 🔍
01/20/2017 +60 days 🔍
01/20/2017 +0 days 🔍
01/20/2017 +0 days 🔍
07/28/2020 +1285 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: securityfocus.com⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8643 (🔍)
GCVE (CVE): GCVE-0-2016-8643
GCVE (VulDB): GCVE-100-95741
SecurityFocus: 94457 - Moodle CVE-2016-8643 Security Bypass Vulnerability
OSVDB: - CVE-2016-8643 - Moodle - Admin Edit Issue

See also: 🔍

Entryinfo

Created: 01/20/2017 15:12
Updated: 07/28/2020 14:40
Changes: 01/20/2017 15:12 (70), 07/28/2020 14:40 (8)
Complete: 🔍
Cache ID: 216:DBA:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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