Vulnerability CVE-2016-8642

Vulnerability Name:

CVE-2016-8642 (CCN-122345)

Assigned:

2016-11-21

Published:

2016-11-21

Updated:

2020-12-01

Summary:

In Moodle 2.x and 3.x, the question engine allows access to files that should not be available.

CVSS v3 Severity:

5.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
4.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/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): None 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:

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

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
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-284

Vulnerability Consequences:

Obtain Information

References:

Source: MITRE
Type: CNA
CVE-2016-8642

Source: BID
Type: Third Party Advisory, VDB Entry
94441

Source: CCN
Type: BID-94441
Moodle CVE-2016-8642 Security Bypass Vulnerability

Source: CCN
Type: Moodle Web site
Moodle - Open-source learning platform | Moodle.org

Source: XF
Type: UNKNOWN
moodle-cve20168642-info-disc(122345)

Source: CCN
Type: Moodle Security Advisory MSA-16-0023
Question engine allows access to files that should not be available

Source: CONFIRM
Type: Patch, Vendor Advisory
https://moodle.org/mod/forum/discuss.php?d=343275

Vulnerable Configuration:

Configuration 1:

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

OR cpe:/a:moodle:moodle:2.9.8:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.7:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.6:*:*:*:*:*:*:*

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

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

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

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

OR cpe:/a:moodle:moodle:3.1.1:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.1:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.6:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.5:*:*:*:*:*:*:*

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

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

OR cpe:/a:moodle:moodle:2.8.12:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.11:*:*:*:*:*:*:*

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

OR cpe:/a:moodle:moodle:3.1.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.4:*:*:*:*:*:*:*

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

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

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

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

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

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

OR cpe:/a:moodle:moodle:*:*:*:*:*:*:*:* (Version <= 2.7.16)

OR cpe:/a:moodle:moodle:3.0.3:*:*:*:*:*:*:*

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

OR cpe:/a:moodle:moodle:2.9.5:*:*:*:*:*:*:*

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

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

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

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

Configuration CCN 1:

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

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

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

OR cpe:/a:moodle:moodle:3.1.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.1.0:-:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.6:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.9.8:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.8.12:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.16:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.bionic:def:201686420000000	V	CVE-2016-8642 on Ubuntu 18.04 LTS (bionic) - medium.	2017-01-20
oval:com.ubuntu.artful:def:20168642000	V	CVE-2016-8642 on Ubuntu 17.10 (artful) - medium.	2017-01-20
oval:com.ubuntu.trusty:def:20168642000	V	CVE-2016-8642 on Ubuntu 14.04 LTS (trusty) - medium.	2017-01-20
oval:com.ubuntu.xenial:def:201686420000000	V	CVE-2016-8642 on Ubuntu 16.04 LTS (xenial) - medium.	2017-01-20
oval:com.ubuntu.bionic:def:20168642000	V	CVE-2016-8642 on Ubuntu 18.04 LTS (bionic) - medium.	2017-01-20
oval:com.ubuntu.xenial:def:20168642000	V	CVE-2016-8642 on Ubuntu 16.04 LTS (xenial) - medium.	2017-01-20
oval:com.ubuntu.disco:def:201686420000000	V	CVE-2016-8642 on Ubuntu 19.04 (disco) - medium.	2017-01-20
oval:com.ubuntu.cosmic:def:20168642000	V	CVE-2016-8642 on Ubuntu 18.10 (cosmic) - medium.	2017-01-20
oval:com.ubuntu.cosmic:def:201686420000000	V	CVE-2016-8642 on Ubuntu 18.10 (cosmic) - medium.	2017-01-20
oval:com.ubuntu.precise:def:20168642000	V	CVE-2016-8642 on Ubuntu 12.04 LTS (precise) - medium.	2017-01-20

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