NULL pointer dereference in Offis Dcmtk
CVE-2021-41689
DCMTK through 3.6.6 does not handle string copy properly. Sending specific requests to the dcmqrdb program, it would query its database and copy the result even if the result is null, which can incur a head-based overflow. An attacker can use it to launch a DoS attack.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.020 (79.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.020 · change: +0.001
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/DCMTK/dcmtk (Product, Third Party Advisory)
- github.com/DCMTK/dcmtk/commit/5c14bf53fb42ceca12bbcc0016e8704b1580920d (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2024/06/msg00022.html (mailing-list)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2021-41689?
- CVE-2021-41689 is a high-severity vulnerability in Offis Dcmtk, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2022-06-28.
- How severe is CVE-2021-41689?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2021-41689 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.