Cleartext storage of sensitive information in Nextcloud Server and Enterprise Server

1) Cleartext storage of sensitive information

EUVDB-ID: #VU82080

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-45151

CWE-ID: CWE-312 - Cleartext Storage of Sensitive Information

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to cleartext storage of sensitive information in the database. A remote administrator can gain access to OAuth2 client_secret.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Nextcloud Enterprise Server: 25.0.0 - 27.0.0

Nextcloud Server: 25.0.0 - 27.0.0

CPE2.3

• cpe:2.3:a:nextcloud:nextcloud_enterprise_server:25.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_enterprise_server:25.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_enterprise_server:25.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:25.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:25.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:nextcloud:nextcloud_server:25.0.2:*:*:*:*:*:*:*

External links

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hhgv-jcg9-p4m9
https://hackerone.com/reports/1994324
https://github.com/nextcloud/server/pull/38398

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.