#VU43874 Permissions, Privileges, and Access Controls in Moodle - CVE-2011-4287

Vulnerability identifier: #VU43874

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-4287

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 non-authenticated attacker to read and manipulate data.

admin/uploaduser_form.php in Moodle 2.0.x before 2.0.3 does not force password changes for autosubscribed users, which makes it easier for remote attackers to obtain access by leveraging knowledge of the initial password of a new user.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Moodle: 2.0 - 2.0.2

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External links
https://git.moodle.org/gw?p=moodle.git;a=commit;h=22a77963439e00441949440f0517135b3a5418da
https://moodle.org/mod/forum/discuss.php?d=175588
https://openwall.com/lists/oss-security/2011/11/14/1

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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