Vulnerability identifier: #VU24829

Vulnerability risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-7941

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Plone
Web applications / CMS

Vendor: Plone

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to improper permissions check in "plone.app.contenttypes". A remote attacker can PUT (overwrite) some content without needing write permission.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Plone: 4.3 - 5.2.1

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External links
http://www.openwall.com/lists/oss-security/2020/01/24/1
http://plone.org/security/hotfix/20200121
http://plone.org/security/hotfix/20200121/privilege-escalation-for-overwriting-content
http://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 non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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