Moodle 2.7.x < 2.7.20 Multiple Vulnerabilities

critical Nessus Network Monitor Plugin ID 700123
New! Plugin Severity Now Using CVSS v3

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The remote web server is hosting a web application that is vulnerable to multiple attack vectors.


The remote web server hosts Moodle, an open-source course management system. Versions of Moodle 2.7.x prior to 2.7.20 are affected by multiple vulnerabilities :

- Unspecified flaws exist that may allow an attacker to have an unspecified impact. No further details have been provided by the vendor.
- A flaw exists that may allow an authenticated remote attacker to edit the external blog links of other users. This may allow the attacker to take ownership of arbitrary blogs.
- A flaw exists that is due to a lack of capability checks. This may allow an authenticated remote attacker to search arbitrary blogs.
- A flaw exists as HTTP requests to the 'my/index.php' script do not require multiple steps, explicit confirmation, or a unique token when performing certain sensitive actions. By tricking a user into following a specially crafted link, a context-dependent attacker can perform a Cross-Site Request Forgery (CSRF / XSRF) attack causing the victim to change the number of courses displayed in the course overview block.


Upgrade to Moodle version 2.7.20 or later.

See Also

Plugin Details

Severity: Critical

ID: 700123

Family: CGI

Published: 5/25/2017

Updated: 3/6/2019

Dependencies: 8694

Risk Information


Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:ND/RL:OF/RC:C


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:X/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*

Patch Publication Date: 5/8/2017

Vulnerability Publication Date: 5/8/2017

Reference Information

CVE: CVE-2017-7489, CVE-2017-7490, CVE-2017-7491

BID: 98463, 98486