VDB-87581 · CVE-2016-2159 · Qualys 276024

Moodle up to 2.6.11/2.7.12/2.8.10/2.9.4/3.0.2 externallib.php save_submission access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in Moodle up to 2.6.11/2.7.12/2.8.10/2.9.4/3.0.2 (Learning Management Software). This issue affects the function save_submission in the library mod/assign/externallib.php. 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 weakness was released 05/22/2016 (Website). The advisory is shared at moodle.org. The identification of this vulnerability is CVE-2016-2159 since 01/29/2016. The exploitation is known to be easy. The attack may be initiated remotely. A simple authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

By approaching the search of inurl:mod/assign/externallib.php it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 90256 (Fedora 23 : moodle-2.9.5-1.fc23 (2016-403715aaec)), 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 276024 (Fedora Security Update for moodle (FEDORA-2016-9b591e1952)).

Upgrading to version 2.7.13, 2.8.11, 2.9.5 or 3.0.3 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 vulnerability database at Tenable (90256). Entries connected to this vulnerability are available at 87573, 87574, 87575 and 87576.






CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍



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

NVD Base Score: 🔍


Class: Access control
CWE: CWE-284 / CWE-266
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 90256
Nessus Name: Fedora 23 : moodle-2.9.5-1.fc23 (2016-403715aaec)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 830863
OpenVAS Name: Fedora Update for moodle FEDORA-2016-9
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Moodle 2.7.13/2.8.11/2.9.5/3.0.3


01/29/2016 🔍
03/30/2016 +61 days 🔍
04/01/2016 +2 days 🔍
05/22/2016 +51 days 🔍
05/22/2016 +0 days 🔍
05/23/2016 +1 days 🔍
08/21/2022 +2281 days 🔍


Product: moodle.org

Advisory: FEDORA-2016-403715aaec
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-2159 (🔍)
SecurityTracker: 1035333

See also: 🔍


Created: 05/23/2016 10:32 AM
Updated: 08/21/2022 03:11 PM
Changes: 05/23/2016 10:32 AM (64), 12/09/2018 11:25 AM (11), 08/21/2022 03:05 PM (3), 08/21/2022 03:11 PM (1)
Complete: 🔍


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