Unprotected storage of credentials in Nextcloud Mail



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-23944
CWE-ID CWE-256
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Nextcloud Mail
Web applications / Modules and components for CMS

Vendor Nextcloud

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Unprotected storage of credentials

EUVDB-ID: #VU71815

Risk: Low

CVSSv4.0: 0.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-23944

CWE-ID: CWE-256 - Unprotected Storage of Credentials

Exploit availability: No

Description

The vulnerability allows a local user to gain access to other users' credentials.

The vulnerability exists due to application stored credentials in plain text in a configuration file on the system during the duration of OAuth2 setup procedure. A local administrator can view contents of the configuration file and gain access to passwords for 3rd party integration.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nextcloud Mail: All versions

CPE2.3 External links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-g86r-x755-93f4


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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



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