CVE-2021-4432 PCMan FTP Server USER Command denial of service
Remote attackers can cause a denial of service in PCMan FTP Server by exploiting the USER command handler.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-4432?
CVE-2021-4432 is a medium-severity denial of service vulnerability in Pcman Ftp Server, published on 16 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was found in PCMan FTP Server 2.0.7. It has been classified as problematic. This affects an unknown part of the component USER Command Handler. The manipulation leads to denial of service. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-250719.
Weakness: CWE-404
Which versions are affected by CVE-2021-4432?
It affects 1 product.
Products include Pcman Ftp Server.
How do I fix CVE-2021-4432?
No fix has been published for CVE-2021-4432 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-4432 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-4432 exists.
Other vulnerabilities in Pcman Ftp Server
Sources
Also known as GHSA-v462-3xw3-jqx3.