#VU37617 Input validation error in Moodle - CVE-2018-1043

Vulnerability identifier: #VU37617

Vulnerability risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-1043

CWE-ID: CWE-20

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.

In Moodle 3.x, the setting for blocked hosts list can be bypassed with multiple A record hostnames.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Moodle: 3.2.0 - 3.2.6, 3.3.0 - 3.3.3, 3.4.0

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External links
https://www.securityfocus.com/bid/102769
https://moodle.org/mod/forum/discuss.php?d=364382

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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.