#VU39161 Improper access control in Moodle - CVE-2016-3733

Vulnerability identifier: #VU39161

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-3733

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Moodle
Web applications / Other software

Vendor: moodle.org

Description

The vulnerability allows a remote authenticated user to manipulate data.

The "restore teacher" feature in Moodle 3.0 through 3.0.3, 2.9 through 2.9.5, 2.8 through 2.8.11, 2.7 through 2.7.13, and earlier allows remote authenticated users to overwrite the course idnumber.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Moodle: 2.7 - 2.7.13, 2.8 - 2.8.11, 2.9 - 2.9.5, 3.0 - 3.0.3

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External links
https://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-51369
https://www.openwall.com/lists/oss-security/2016/05/17/4
https://www.securitytracker.com/id/1035902
https://bugzilla.redhat.com/show_bug.cgi?id=1335933

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.