CVE-2019-11366 Null dereference in n/a
A race condition in atftpd causes a NULL pointer dereference, allowing attackers to crash the TFTP server and cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-11366?
CVE-2019-11366 is a medium-severity vulnerability in n/a, published on 20 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current->next.
Weakness: CWE-476
Which versions are affected by CVE-2019-11366?
It affects 1 product.
Products include Atftp Project Atftp.
How do I fix CVE-2019-11366?
Apply the vendor's patch.
Is CVE-2019-11366 being exploited?
There is no known exploitation of CVE-2019-11366 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2019-11366, GHSA-4hq6-rhmw-hgw9, UBUNTU-CVE-2019-11366.