Moodle 2.9.x before 2.9.3 does not properly check the contact list before authorizing message transmission, which allows remote authenticated users to bypass intended access restrictions and conduct spam attacks via the messaging API.

Moodle, an open-source course management system, installed on the remote host is version 2.9.x prior to 2.9.3, and is affected by a flaw that is due to the program failing to sufficiently check settings when messaging other users.  This may allow an authenticated remote attacker to bypass preferences against receiving mail from non-contacts and send spam mail to a user where it should be blocked.

Security update.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
9189	Moodle 2.9.x < 2.9.3 Security Bypass	Nessus Network Monitor	CGI	medium
89333	Fedora 23 : moodle-2.9.3-1.fc23 (2015-98fc0d20ad)	Nessus	Fedora Local Security Checks	high
89194	Fedora 22 : moodle-2.8.9-1.fc22 (2015-2ebdd4ad8f)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2015-5331

medium

Tenable Plugins

medium

high

high