CVE-2023-28847
What it is
Nextcloud Server is the file server software for Nextcloud, a self-hosted productivity platform. In Nextcloud Server 24.0.0 prior to 24.0.11 and 25.0.0 prior to 25.0.5; as well as Nextcloud Server Enterprise 23.0.0 prior to 23.0.12.6, 24.0.0 prior to 24.0.11, and 25.0.0 prior to 25.0.5; an attacker is not restricted in verifying passwords of share links so they can just start brute forcing the password. Nextcloud Server 24.0.11 and 25.0.5 and Nextcloud Enterprise Server 23.0.12.6, 24.0.11, and 25.0.5 contain a fix for this issue. No known workarounds are available.
At a glance
- Exploitability
- Can be exploited over the network without logging in, but needs a user to act. Limited direct impact.
- Exploit odds
- 0.8% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.8% in the next 30 days (EPSS).
- Severity: 3.1 LOW (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.8% · EPSS, next 30 days
- Weakness
- CWE-307
- Record status
- Modified
Affected
- Nextcloud Server < 23.0.12.6
- Nextcloud Server < 24.0.11
- Nextcloud Server < 25.0.5
Attack profile CVSS 3.1 · 3.1
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2023-28847.md and follow it. Check whether this project is affected by CVE-2023-28847. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r5wf-xj97-3w7w
- https://github.com/nextcloud/server/pull/35057
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r5wf-xj97-3w7w
- https://github.com/nextcloud/server/pull/35057
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r5wf-xj97-3w7w
- https://github.com/nextcloud/server/pull/35057
- https://hackerone.com/reports/1894653
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r5wf-xj97-3w7w
- https://github.com/nextcloud/server/pull/35057
- https://hackerone.com/reports/1894653