Vulnerability · Published Jun 28, 2022 · Assigned by mitre
CVE-2021-41689
High 7.5
In plain English
A high-severity null pointer dereference in the dcmtk package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.9% (higher than 80% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)1.9%top 19.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | dcmtk | 3.6.7-1 | DEBIAN-CVE-2021-41689 |
| Debian:13 | dcmtk | 3.6.7-1 | DEBIAN-CVE-2021-41689 |
| Debian:14 | dcmtk | 3.6.7-1 | DEBIAN-CVE-2021-41689 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H