Moodle CVE-2019-14880 Security Bypass Vulnerability

Description

Moodle is prone to a security-bypass vulnerability. Attackers can exploit this issue to bypass certain security restrictions and perform unauthorized actions. This may aid in further attacks. Versions prior to Moodle 3.5.9, 3.6.7 and 3.7.3 are vulnerable.

Technologies Affected

• Moodle Moodle 3.0
• Moodle Moodle 3.0.1
• Moodle Moodle 3.0.10
• Moodle Moodle 3.0.2
• Moodle Moodle 3.0.3
• Moodle Moodle 3.0.4
• Moodle Moodle 3.0.5
• Moodle Moodle 3.0.6
• Moodle Moodle 3.0.7
• Moodle Moodle 3.0.8
• Moodle Moodle 3.0.9
• Moodle Moodle 3.1
• Moodle Moodle 3.1.1
• Moodle Moodle 3.1.10
• Moodle Moodle 3.1.11
• Moodle Moodle 3.1.12
• Moodle Moodle 3.1.13
• Moodle Moodle 3.1.14
• Moodle Moodle 3.1.15
• Moodle Moodle 3.1.16
• Moodle Moodle 3.1.17
• Moodle Moodle 3.1.18
• Moodle Moodle 3.1.2
• Moodle Moodle 3.1.3
• Moodle Moodle 3.1.4
• Moodle Moodle 3.1.5
• Moodle Moodle 3.1.6
• Moodle Moodle 3.1.7
• Moodle Moodle 3.1.8
• Moodle Moodle 3.1.9
• Moodle Moodle 3.2
• Moodle Moodle 3.2.1
• Moodle Moodle 3.2.2
• Moodle Moodle 3.2.3
• Moodle Moodle 3.2.4
• Moodle Moodle 3.2.5
• Moodle Moodle 3.2.6
• Moodle Moodle 3.2.7
• Moodle Moodle 3.2.8
• Moodle Moodle 3.2.9
• Moodle Moodle 3.3
• Moodle Moodle 3.3.1
• Moodle Moodle 3.3.2
• Moodle Moodle 3.3.3
• Moodle Moodle 3.3.4
• Moodle Moodle 3.3.5
• Moodle Moodle 3.3.6
• Moodle Moodle 3.3.7
• Moodle Moodle 3.3.8
• Moodle Moodle 3.3.9
• Moodle Moodle 3.4
• Moodle Moodle 3.4.1
• Moodle Moodle 3.4.2
• Moodle Moodle 3.4.3
• Moodle Moodle 3.4.4
• Moodle Moodle 3.4.5
• Moodle Moodle 3.4.6
• Moodle Moodle 3.4.7
• Moodle Moodle 3.4.8
• Moodle Moodle 3.4.9
• Moodle Moodle 3.5
• Moodle Moodle 3.5.1
• Moodle Moodle 3.5.2
• Moodle Moodle 3.5.3
• Moodle Moodle 3.5.4
• Moodle Moodle 3.5.5
• Moodle Moodle 3.5.6
• Moodle Moodle 3.5.7
• Moodle Moodle 3.5.8
• Moodle Moodle 3.6
• Moodle Moodle 3.6.1
• Moodle Moodle 3.6.2
• Moodle Moodle 3.6.3
• Moodle Moodle 3.6.4
• Moodle Moodle 3.6.5
• Moodle Moodle 3.6.6
• Moodle Moodle 3.7
• Moodle Moodle 3.7.1
• Moodle Moodle 3.7.2

Recommendations

Block external access at the network boundary, unless external parties require service.
Filter access to the affected computer at the network boundary if global access isn’t needed. Restricting access to only trusted computers and networks might greatly reduce the likelihood of a successful exploit.

Run all software as a nonprivileged user with minimal access rights.
When possible, run all software as a user with minimal privileges and limited access to system resources. Use additional precautions such as restrictive environments to insulate software that may potentially handle malicious content.

Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to detect and block attacks and anomalous activity such as requests containing suspicious URI sequences. Since the webserver may log such requests, review its logs regularly.

Updates are available. Please see the references or vendor advisory for more information.