#VU51053 Storing passwords in a recoverable format in Nextcloud Server - CVE-2020-8296

Vulnerability identifier: #VU51053

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-8296

CWE-ID: CWE-257

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Nextcloud Server
Client/Desktop applications / Messaging software

Vendor: Nextcloud

Description

The vulnerability allows a remote user to decrypt passwords.

The vulnerability exists due to the affected software stores passwords in a recoverable format. A remote administrator can cause password enumeration on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Nextcloud Server: before 20.0.0

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External links
https://nextcloud.com/security/advisory/?id=NC-SA-2021-006

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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.