#VU43834 Permissions, Privileges, and Access Controls in Moodle - CVE-2011-4584

Vulnerability identifier: #VU43834

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2011-4584

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Moodle
Web applications / Other software

Vendor: moodle.org

Description

The vulnerability allows a remote #AU# to manipulate data.

The MNET authentication functionality in Moodle 1.9.x before 1.9.15, 2.0.x before 2.0.6, and 2.1.x before 2.1.3 allows remote authenticated users to impersonate other user accounts by using the Login As feature in conjunction with a remote MNET single sign-on capability, as demonstrated by a Mahara site.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Moodle: 1.9 - 1.9.14, 2.0 - 2.0.5, 2.1 - 2.1.2

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External links
https://git.moodle.org/gw?p=moodle.git;a=commit;h=10df8657c1c138c0d0ab1d4796c552fcec0c299b
https://moodle.org/mod/forum/discuss.php?d=191751
https://www.debian.org/security/2012/dsa-2421
https://bugzilla.redhat.com/show_bug.cgi?id=761248

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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