PT-2023-8424 · Nextcloud+2 · Nextcloud Enterprise Server+3
Adam-P
+1
·
Published
2023-12-22
·
Updated
2025-01-24
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CVE-2023-49792
CVSS v2.0
10
High
| Vector | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Name of the Vulnerable Software and Affected Versions
Nextcloud Server versions prior to 26.0.9 and 27.1.4
Nextcloud Enterprise Server versions prior to 23.0.12.13, 24.0.12.9, 25.0.13.4, 26.0.9, and 27.1.4
Description
The issue is related to the lack of restrictions on authentication attempts, allowing a remote attacker to bypass the authentication process. When a (reverse) proxy is configured as a trusted proxy, the server can be tricked into reading the wrong remote address for an attacker, enabling them to execute authentication attempts.
Recommendations
For Nextcloud Server versions prior to 26.0.9, update to version 26.0.9 or later.
For Nextcloud Server versions prior to 27.1.4, update to version 27.1.4 or later.
For Nextcloud Enterprise Server versions prior to 23.0.12.13, update to version 23.0.12.13 or later.
For Nextcloud Enterprise Server versions prior to 24.0.12.9, update to version 24.0.12.9 or later.
For Nextcloud Enterprise Server versions prior to 25.0.13.4, update to version 25.0.13.4 or later.
For Nextcloud Enterprise Server versions prior to 26.0.9, update to version 26.0.9 or later.
For Nextcloud Enterprise Server versions prior to 27.1.4, update to version 27.1.4 or later.
Exploit
Fix
Improper Restriction of Excessive Authentication Attempts
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Nextcloud Enterprise Server
Nextcloud Server
Red Os