CVE-2021-20234

NameCVE-2021-20234
DescriptionAn uncontrolled resource consumption (memory leak) flaw was found in the ZeroMQ client in versions before 4.3.3 in src/pipe.cpp. This issue causes a client that connects to multiple malicious or compromised servers to crash. The highest threat from this vulnerability is to system availability.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDLA-2588-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
zeromq3 (PTS)bullseye4.3.4-1+deb11u1fixed
bookworm4.3.4-6fixed
forky, sid, trixie4.3.5-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
zeromq3sourcestretch4.2.1-4+deb9u4DLA-2588-1
zeromq3source(unstable)4.3.3-1

Notes

[buster] - zeromq3 <no-dsa> (Minor issue)
https://github.com/zeromq/libzmq/pull/3918
https://github.com/zeromq/libzmq/security/advisories/GHSA-wfr2-29gj-5w87
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=22037
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=22123
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