| Name | CVE-2021-41687 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3847-1, ELA-1118-1 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| dcmtk (PTS) | jessie, jessie (lts) | 3.6.0-15+deb8u1 | vulnerable |
| stretch (lts), stretch | 3.6.1~20160216-4+deb10u1 | fixed |
| buster (security), buster, buster (lts) | 3.6.4-2.1+deb10u1 | fixed |
| bullseye | 3.6.5-1 | vulnerable |
| bookworm | 3.6.7-9~deb12u1 | fixed |
| sid, trixie | 3.6.8-6 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| dcmtk | source | jessie | (unfixed) | end-of-life | | |
| dcmtk | source | stretch | 3.6.1~20160216-4+deb10u1 | | ELA-1118-1 | |
| dcmtk | source | buster | 3.6.4-2.1+deb10u1 | | DLA-3847-1 | |
| dcmtk | source | (unstable) | 3.6.7-1 | | | |
Notes
[bullseye] - dcmtk <no-dsa> (Minor issue)
https://github.com/DCMTK/dcmtk/commit/a9697dfeb672b0b9412c00c7d36d801e27ec85cb (DCMTK-3.6.7)