CVE-2021-41687 Denial of service in n/a
An attacker can cause a denial of service in DCMTK's dcmqrdb program by triggering a memory leak through malformed parsing 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-2021-41687?
CVE-2021-41687 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 program malloc a heap memory for parsing data, but does not free it when error in parsing. Sending specific requests to the dcmqrdb program incur the memory leak. An attacker can use it to launch a DoS attack.
Weakness: CWE-401
Which versions are affected by CVE-2021-41687?
It affects 1 product.
Products include Offis Dcmtk.
How do I fix CVE-2021-41687?
Apply the vendor's patch.
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-2021-41687 being exploited?
There is no known exploitation of CVE-2021-41687 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2021-41687, GHSA-342m-fmj9-855c, UBUNTU-CVE-2021-41687, USN-7010-2.