Weak Password Recovery Mechanism for Forgotten Password in Moodle

1) Weak Password Recovery Mechanism for Forgotten Password

EUVDB-ID: #VU39808

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-2016-7038

CWE-ID: CWE-640 - Weak password recovery mechanism

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

In Moodle 2.x and 3.x, web service tokens are not invalidated when the user password is changed or forced to be changed.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Moodle: 2.8 - 3.1.1

CPE2.3

• cpe:2.3:a:moodle_org:moodle:2.8.12:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:2.9.7:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.0.5:*:*:*:*:*:*:*
• cpe:2.3:a:moodle_org:moodle:3.1.1:*:*:*:*:*:*:*

External links

https://www.securityfocus.com/bid/93174
https://moodle.org/mod/forum/discuss.php?d=339631

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.