Moodle up to 3.0.2 Calendar calendar/externallib.php information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Moodle up to 2.6.11/2.7.12/2.8.10/2.9.4/3.0.2. The impacted element is an unknown function in the library calendar/externallib.php of the component Calendar. Such manipulation leads to information disclosure. This vulnerability is listed as CVE-2016-2156. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Moodle up to 2.6.11/2.7.12/2.8.10/2.9.4/3.0.2 (Learning Management Software). It has been rated as critical. Affected by this issue is an unknown functionality in the library calendar/externallib.php of the component Calendar. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality, integrity, and availability. CVE summarizes:

calendar/externallib.php in Moodle through 2.6.11, 2.7.x before 2.7.13, 2.8.x before 2.8.11, 2.9.x before 2.9.5, and 3.0.x before 3.0.3 provides calendar-event data without considering whether an activity is hidden, which allows remote authenticated users to obtain sensitive information via a web-service request.

The weakness was presented 05/22/2016 (Website). The advisory is available at moodle.org. This vulnerability is handled as CVE-2016-2156 since 01/29/2016. The exploitation is known to be easy. The attack may be launched remotely. The successful exploitation needs a simple authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

By approaching the search of inurl:calendar/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). See VDB-87573, VDB-87574, VDB-87575 and VDB-87576 for similar entries. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Moodle 2.7.13/2.8.11/2.9.5/3.0.3

Timelineinfo

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 🔍

Sourcesinfo

Product: moodle.org

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

CVE: CVE-2016-2156 (🔍)
GCVE (CVE): GCVE-0-2016-2156
GCVE (VulDB): GCVE-100-87578
SecurityTracker: 1035333

See also: 🔍

Entryinfo

Created: 05/23/2016 10:32
Updated: 08/21/2022 14:56
Changes: 05/23/2016 10:32 (63), 12/09/2018 11:24 (11), 08/21/2022 14:53 (3), 08/21/2022 14:56 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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