M-Files Server: Improper Preservation of Permissions
CVE-2023-6239 is a high-severity improper preservation of permissions vulnerability in M-Files Server from M-Files, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 23.11.13168.7 as the first without the flaw, so updating M-Files Server to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.57% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update M-Files Server to 23.11.13168.7 or a later version.
- Read the advisory on empower.m-files.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| M-Files | M-Files Server | 23.9; 23.10; 23.11 up to, but not including, 23.11.13168.7 | 23.11.13168.7 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 5.4 | Medium | CNA (m-files.com) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
Under rare conditions, the effective permissions of an object might be incorrectly calculated if the object has a specific configuration of metadata-driven permissions in M-Files Server versions 23.9, 23.10, and 23.11 before 23.11.13168.7, potentially enabling unauthorized access to the object.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Preservation of Permissions
The product does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.
More Improper Preservation of Permissions vulnerabilities (CWE-281)
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Advisories
Other vulnerabilities in M-Files Server
- 7.1 High severity
- 7.3 High severity
- 8.6 High severity
- 7.1 High severity
- 7.5 High severity
- 9.8 Critical severity
Recent Improper Preservation of Permissions vulnerabilities
- 8.8 High severity
- 7.8 High severity
- 8.8 High severity
- 7.8 High severity
- 9.8 Critical severity
- 7.2 High severity
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