Vulnerability CVE-2016-2156

Vulnerability Name:

CVE-2016-2156 (CCN-111604)

Assigned:

2016-03-21

Published:

2016-03-21

Updated:

2020-12-01

Summary:

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.

CVSS v3 Severity:

4.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
3.8 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): None Availibility (A): None

4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): Low User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): None Availibility (A): None

CVSS v2 Severity:

4.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:N/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Partial Integrity (I): None Availibility (A): None

Vulnerability Type:

CWE-200

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2016-2156

Source: CONFIRM
Type: UNKNOWN
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-52808

Source: CCN
Type: SECTRACK ID: 1035333
Moodle Bugs Let Remote Authenticated Users Obtain Potentially Sensitive Information and Bypass Security Restrictions and Remote Users Conduct Cross-Site Scripting and Cross-Site Request Forgery Attacks

Source: MLIST
Type: UNKNOWN
[oss-security] 20160321 moodle security release

Source: SECTRACK
Type: UNKNOWN
1035333

Source: XF
Type: UNKNOWN
moodle-cve20162156-info-disc(111604)

Source: CONFIRM
Type: Vendor Advisory
https://moodle.org/mod/forum/discuss.php?d=330178

Source: CCN
Type: Moodle Security Advisory MSA-16-0008
External function get_calendar_events return events that pertains to hidden activities

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2016-2156

Vulnerable Configuration:

Configuration 1:

cpe:/a:moodle:moodle:2.9.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.1:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.5:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.4:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.10:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.4:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.3:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.7:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.6:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.12:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.11:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.3:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.1:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.9:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.8:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.1:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.0:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.5:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.4:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.9:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.8:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.1:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.0:-:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.0:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.10:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.3:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.7:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.6:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:*:*:*:*:*:*:*:* (Version <= 2.6.11)

Configuration CCN 1:

cpe:/a:moodle:moodle:2.7.0:-:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.0:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.0:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.0:-:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.10:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.8:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.6.11:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.4:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.10:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.12:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.bionic:def:201621560000000	V	CVE-2016-2156 on Ubuntu 18.04 LTS (bionic) - low.	2016-05-22
oval:com.ubuntu.artful:def:20162156000	V	CVE-2016-2156 on Ubuntu 17.10 (artful) - low.	2016-05-22
oval:com.ubuntu.trusty:def:20162156000	V	CVE-2016-2156 on Ubuntu 14.04 LTS (trusty) - low.	2016-05-22
oval:com.ubuntu.xenial:def:201621560000000	V	CVE-2016-2156 on Ubuntu 16.04 LTS (xenial) - low.	2016-05-22
oval:com.ubuntu.bionic:def:20162156000	V	CVE-2016-2156 on Ubuntu 18.04 LTS (bionic) - low.	2016-05-22
oval:com.ubuntu.xenial:def:20162156000	V	CVE-2016-2156 on Ubuntu 16.04 LTS (xenial) - low.	2016-05-22
oval:com.ubuntu.disco:def:201621560000000	V	CVE-2016-2156 on Ubuntu 19.04 (disco) - low.	2016-05-22
oval:com.ubuntu.cosmic:def:20162156000	V	CVE-2016-2156 on Ubuntu 18.10 (cosmic) - low.	2016-05-22
oval:com.ubuntu.cosmic:def:201621560000000	V	CVE-2016-2156 on Ubuntu 18.10 (cosmic) - low.	2016-05-22
oval:com.ubuntu.precise:def:20162156000	V	CVE-2016-2156 on Ubuntu 12.04 LTS (precise) - low.	2016-05-22

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