CVE-2023-40044: Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability

CVE-2023-40044 · Severity: critical · CVSS 10 · Exploited in the wild · Published 2023-10-05

A .NET deserialization vulnerability in the Ad Hoc Transfer module of Progress WS_FTP Server allows a pre-authenticated attacker to execute remote commands on the underlying operating system. The vulnerability is exploited by sending specially crafted untrusted data to the server.

Technologies: Progress WS FTP Server. Vendors: Progress.

Quick answers

Is CVE-2023-40044 exploited in the wild?
Yes. CVE-2023-40044 is known to be exploited in the wild, first recorded on 5 October 2023. Treat it as urgent.
How severe is CVE-2023-40044?
Critical severity, with a CVSS score of 10, published 5 October 2023.
Which products and versions are affected?
Progress Software Corporation WS_FTP Server versions prior to 8.7.4 and 8.8.2.
Is there a fix for CVE-2023-40044?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2023-40044 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2023-40044?
Check whether you run Progress WS FTP Server. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Progress Software Corporation WS_FTP Server versions prior to 8.7.4 and 8.8.2

Timeline

  • 2023-10-05: disclosed
  • 2023-10-05: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

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