#VU24828 Weak password requirements in Plone - CVE-2020-7940

Vulnerability identifier: #VU24828

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-2020-7940

CWE-ID: CWE-521

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Plone
Web applications / CMS

Vendor: Plone

Description

The vulnerability allows an attacker to set weak passwords.

The vulnerability exists due to missing password strength checks on the password reset form or the admin form. A remote authenticated attacker can set weak passwords, leading to easier cracking.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Plone: 4.3 - 5.2.0

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External links
https://www.openwall.com/lists/oss-security/2020/01/24/1
https://plone.org/security/hotfix/20200121
https://plone.org/security/hotfix/20200121/password-strength-checks-were-not-always-checked
https://www.openwall.com/lists/oss-security/2020/01/22/1

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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.