Moodle up to 2.6.11/2.7.10/2.8.8/2.9.2 core_enrol_get_enrolled_users Web Service enrol/externallib.php access control

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.
4.2	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Moodle up to 2.6.11/2.7.10/2.8.8/2.9.2. Affected by this vulnerability is an unknown functionality in the library enrol/externallib.php of the component core_enrol_get_enrolled_users Web Service. The manipulation leads to access control. This vulnerability is traded as CVE-2015-5339. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Moodle up to 2.6.11/2.7.10/2.8.8/2.9.2 (Learning Management Software) and classified as problematic. This issue affects some unknown processing in the library enrol/externallib.php of the component core_enrol_get_enrolled_users Web Service. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality. The summary by CVE is:

The core_enrol_get_enrolled_users web service in enrol/externallib.php in Moodle through 2.6.11, 2.7.x before 2.7.11, 2.8.x before 2.8.9, and 2.9.x before 2.9.3 does not properly implement group-based access restrictions, which allows remote authenticated users to obtain sensitive course-participant information via a web-service request.

The weakness was shared 02/22/2016 (Website). It is possible to read the advisory at moodle.org. The identification of this vulnerability is CVE-2015-5339 since 07/01/2015. The attack may be initiated remotely. Required for exploitation is a simple authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

By approaching the search of inurl:enrol/externallib.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 89194 (Fedora 22 : moodle-2.8.9-1.fc22 (2015-2ebdd4ad8f)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124446 (Fedora Security Update for moodle (FEDORA-2015-98)).

Upgrading to version 2.7.10, 2.8.9 or 2.9.3 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 (89194), SecurityFocus (BID 77609†) and Vulnerability Center (SBV-57664†). The entries VDB-81052, VDB-81053, VDB-81054 and VDB-81055 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Learning Management Software

Name

• Moodle

Version

• 2.6.0
• 2.6.1
• 2.6.2
• 2.6.3
• 2.6.4
• 2.6.5
• 2.6.6
• 2.6.7
• 2.6.8
• 2.6.9
• 2.6.10
• 2.6.11
• 2.7.0
• 2.7.1
• 2.7.2
• 2.7.3
• 2.7.4
• 2.7.5
• 2.7.6
• 2.7.7
• 2.7.8
• 2.7.9
• 2.7.10
• 2.8.0
• 2.8.1
• 2.8.2
• 2.8.3
• 2.8.4
• 2.8.5
• 2.8.6
• 2.8.7
• 2.8.8
• 2.9.0
• 2.9.1
• 2.9.2

License

• open-source

Website

• Product: https://moodle.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

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

NVD Base Score: 4.3
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: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 89194
Nessus Name: Fedora 22 : moodle-2.8.9-1.fc22 (2015-2ebdd4ad8f)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for moodle FEDORA-2015-2
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Moodle 2.7.10/2.8.9/2.9.3

Timelineinfo

07/01/2015 🔍
11/16/2015 +138 days 🔍
11/16/2015 +0 days 🔍
12/11/2015 +25 days 🔍
02/22/2016 +73 days 🔍
02/22/2016 +0 days 🔍
02/23/2016 +1 days 🔍
03/04/2016 +10 days 🔍
03/23/2016 +19 days 🔍
07/08/2022 +2298 days 🔍

Sourcesinfo

Product: moodle.org

Advisory: FEDORA-2015-2ebdd4ad8f
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-5339 (🔍)
GCVE (CVE): GCVE-0-2015-5339
GCVE (VulDB): GCVE-100-81059
SecurityFocus: 77609 - Moodle CVE-2015-5339 Security Bypass Vulnerability
Vulnerability Center: 57664 - Moodle Remote Information Disclosure via a Web-service Request - CVE-2015-5339, Medium

See also: 🔍

Entryinfo

Created: 02/23/2016 09:41
Updated: 07/08/2022 11:01
Changes: 02/23/2016 09:41 (72), 02/02/2019 11:30 (13), 07/08/2022 11:01 (4)
Complete: 🔍
Cache ID: 216::103

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Discussion

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