Permissions, Privileges, and Access Controls in Moodle

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU41335

Risk: Low

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

CVE-ID: CVE-2014-3617

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote #AU# to gain access to sensitive information.

The forum_print_latest_discussions function in mod/forum/lib.php in Moodle through 2.4.11, 2.5.x before 2.5.8, 2.6.x before 2.6.5, and 2.7.x before 2.7.2 allows remote authenticated users to bypass the individual answer-posting requirement without the mod/forum:viewqandawithoutposting capability, and discover an author's username, by leveraging the student role and visiting a Q&A forum.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Moodle: 2.0 - 2.7.1

CPE2.3

• cpe:2.3:a:moodle_org:moodle:2.0.9:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:2.1.10:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:2.2.11:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:2.3.11:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:2.4.10:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:2.5.7:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:2.6.4:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:2.7.1:*:*:*:*:*:*:*

External links

https://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-46619
https://openwall.com/lists/oss-security/2014/09/15/1
https://moodle.org/mod/forum/discuss.php?d=269591

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.