CVE-2023-49792: Bruteforce protection can be bypassed with misconfigured proxy
First published: Fri Dec 22 2023(Updated: )
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.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Nextcloud Nextcloud Server | >=23.0.0<23.0.12.13 | |
| Nextcloud Nextcloud Server | >=24.0.0<24.0.12.9 | |
| Nextcloud Nextcloud Server | >=25.0.0<25.0.13.4 | |
| Nextcloud Nextcloud Server | >=26.0.0<26.0.9 | |
| Nextcloud Nextcloud Server | >=26.0.0<26.0.9 | |
| Nextcloud Nextcloud Server | >=27.0.0<27.1.4 | |
| Nextcloud Nextcloud Server | >=27.0.0<27.1.4 |
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Reference Links
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- agent/softwarecombine
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- collector/mitre-cve
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- vendor/nextcloud
- canonical/nextcloud nextcloud server
- version/nextcloud nextcloud server/23.0.0
- version/nextcloud nextcloud server/24.0.0
- version/nextcloud nextcloud server/25.0.0
- version/nextcloud nextcloud server/26.0.0
- version/nextcloud nextcloud server/27.0.0