CVE-2023-49792 Information

Description

Nextcloud Server provides data storage for Nextcloud an open source cloud platform. In Nextcloud Server prior to versions 26.0.9 and 27.1.4; as well as Nextcloud Enterprise Server prior to versions 23.0.12.13 24.0.12.9 25.0.13.4 26.0.9 and 27.1.4; when a (reverse) proxy is configured as trusted proxy the server could be tricked into reading a wrong remote address for an attacker allowing them executing authentication attempts than intended. Nextcloud Server versions 26.0.9 and 27.1.4 and Nextcloud Enterprise Server versions 23.0.12.13 24.0.12.9 25.0.13.4 26.0.9 and 27.1.4 contain a patch for this issue. No known workarounds are available.

Reference

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5j2p-q736-hw98 https://github.com/nextcloud/server/pull/41526 https://hackerone.com/reports/2230915