Vulnerability identifier: #VU82080
Vulnerability risk: Low
CVSSv3.1: 4.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-312
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Nextcloud Enterprise Server
Client/Desktop applications /
Messaging software
Nextcloud Server
Client/Desktop applications /
Messaging software
Vendor: Nextcloud
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
External links
http://github.com/nextcloud/security-advisories/security/advisories/GHSA-hhgv-jcg9-p4m9
http://hackerone.com/reports/1994324
http://github.com/nextcloud/server/pull/38398
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.