Vulnerability CVE-2017-7491 - CERT Civis.Net

Vulnerability Name:

CVE-2017-7491 (CCN-126074)

Assigned:

2017-05-15

Published:

2017-05-15

Updated:

2017-05-23

Summary:

In Moodle 2.x and 3.x, a CSRF attack is possible that allows attackers to change the "number of courses displayed in the course overview block" configuration setting.

CVSS v3 Severity:

4.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)
3.8 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): Low Availibility (A): None

4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/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): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): Low Availibility (A): None

CVSS v2 Severity:

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

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

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

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

Vulnerability Type:

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2017-7491

Source: XF
Type: UNKNOWN
moodle-cve20177491-csrf(126074)

Source: CCN
Type: Moodle Security Advisory MSA-17-0012
CSRF in number of courses displayed in the course overview block

Source: CONFIRM
Type: Patch, Vendor Advisory
https://moodle.org/mod/forum/discuss.php?d=352355

Vulnerable Configuration:

Configuration 1:

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

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

OR cpe:/a:moodle:moodle:2.7.0:rc1:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.0:rc2:*:*:*:*:*:*

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

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

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

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

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

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

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

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

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

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

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

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

OR cpe:/a:moodle:moodle:2.7.13:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.14:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.15:*:*:*:*:*:*:*

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

OR cpe:/a:moodle:moodle:2.7.17:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:2.7.18:*:*:*:*:*:*:*

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

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

OR cpe:/a:moodle:moodle:3.0.0:rc1:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.0:rc2:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.0:rc3:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.0:rc4:*:*:*:*:*:*

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

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

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

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

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

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

OR cpe:/a:moodle:moodle:3.0.7:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.8:*:*:*:*:*:*:*

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

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

OR cpe:/a:moodle:moodle:3.1.0:rc1:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.1.0:rc2:*:*:*:*:*:*

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

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

OR cpe:/a:moodle:moodle:3.1.3:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.1.4:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2.0:beta:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2.0:rc1:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2.0:rc2:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2.0:rc3:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2.0:rc4:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2.0:rc5:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2.1:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2.2:*:*:*:*:*:*:*

Configuration CCN 1:

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

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

OR cpe:/a:moodle:moodle:3.2.0:-:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.2.2:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.1.5:*:*:*:*:*:*:*

OR cpe:/a:moodle:moodle:3.0.9:*:*:*:*:*:*:*

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

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.xenial:def:201774910000000	V	CVE-2017-7491 on Ubuntu 16.04 LTS (xenial) - low.	2017-05-15
oval:com.ubuntu.artful:def:20177491000	V	CVE-2017-7491 on Ubuntu 17.10 (artful) - low.	2017-05-15
oval:com.ubuntu.xenial:def:20177491000	V	CVE-2017-7491 on Ubuntu 16.04 LTS (xenial) - low.	2017-05-15
oval:com.ubuntu.disco:def:201774910000000	V	CVE-2017-7491 on Ubuntu 19.04 (disco) - low.	2017-05-15
oval:com.ubuntu.bionic:def:20177491000	V	CVE-2017-7491 on Ubuntu 18.04 LTS (bionic) - low.	2017-05-15
oval:com.ubuntu.cosmic:def:201774910000000	V	CVE-2017-7491 on Ubuntu 18.10 (cosmic) - low.	2017-05-15
oval:com.ubuntu.cosmic:def:20177491000	V	CVE-2017-7491 on Ubuntu 18.10 (cosmic) - low.	2017-05-15
oval:com.ubuntu.bionic:def:201774910000000	V	CVE-2017-7491 on Ubuntu 18.04 LTS (bionic) - low.	2017-05-15
oval:com.ubuntu.trusty:def:20177491000	V	CVE-2017-7491 on Ubuntu 14.04 LTS (trusty) - low.	2017-05-15