CVE-2019-18217 Denial of service in n/a
Remote unauthenticated attackers can cause a denial of service in ProFTPD by sending overly long commands, triggering an infinite loop in the child process.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-18217?
CVE-2019-18217 is a high-severity denial of service vulnerability in n/a, published on 21 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
ProFTPD before 1.3.6b and 1.3.7rc before 1.3.7rc2 allows remote unauthenticated denial-of-service due to incorrect handling of overly long commands because main.c in a child process enters an infinite loop.
Weakness: CWE-835
Which versions are affected by CVE-2019-18217?
It affects 1 product.
Products include Proftpd Proftpd.
How do I fix CVE-2019-18217?
Upgrade to a fixed version.
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-2019-18217 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-18217 exists.
Public exploit code: 1 Nuclei template.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2019-18217, DLA-1974-1, DSA-4559-1, GHSA-5446-jrwr-x7c6, UBUNTU-CVE-2019-18217.