| Name | CVE-2020-36400 |
| Description | ZeroMQ libzmq 4.3.3 has a heap-based buffer overflow in zmq::tcp_read, a different vulnerability than CVE-2021-20235. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| zeromq3 (PTS) | jessie, jessie (lts) | 4.0.5+dfsg-2+deb8u4 | fixed |
| stretch (security), stretch (lts), stretch | 4.2.1-4+deb9u4 | fixed |
| buster, buster (lts) | 4.3.1-4+deb10u3 | fixed |
| buster (security) | 4.3.1-4+deb10u2 | fixed |
| bullseye | 4.3.4-1+deb11u1 | fixed |
| bookworm | 4.3.4-6 | fixed |
| sid, trixie | 4.3.5-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| zeromq3 | source | (unstable) | (not affected) | | | |
Notes
- zeromq3 <not-affected> (Never affected a released version)
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26042
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libzmq/OSV-2020-1887.yaml
Introduced by: https://github.com/zeromq/libzmq/commit/b56195e995e0875afabf405826d97b1dd9817bb0 (v4.3.3)
Fixed by: https://github.com/zeromq/libzmq/commit/397ac80850bf8d010fae23dd215db0ee2c677306 (v4.3.3)