CVE-2021-41690 Denial of service in n/a
Attackers can cause a denial of service in DCMTK's dcmqrdb program by triggering a memory leak through specific requests.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-41690?
CVE-2021-41690 is a high-severity denial of service vulnerability in n/a, published on 28 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
DCMTK through 3.6.6 does not handle memory free properly. The malloced memory for storing all file information are recorded in a global variable LST and are not freed properly. Sending specific requests to the dcmqrdb program can incur a memory leak. An attacker can use it to launch a DoS attack.
Weakness: CWE-401
Which versions are affected by CVE-2021-41690?
It affects 1 product.
Products include Offis Dcmtk.
How do I fix CVE-2021-41690?
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-2021-41690 being exploited?
There is no known exploitation of CVE-2021-41690 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2021-41690, GHSA-xqr6-h56f-8r2j, UBUNTU-CVE-2021-41690.