CVE-2021-28166

NameCVE-2021-28166
DescriptionIn Eclipse Mosquitto version 2.0.0 to 2.0.9, if an authenticated client that had connected with MQTT v5 sent a crafted CONNACK message to the broker, a NULL pointer dereference would occur.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
NVD severitymedium
Debian Bugs986701

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mosquitto (PTS)stretch (security), stretch1.4.10-3+deb9u4fixed
buster, buster (security)1.5.7-1+deb10u1fixed
bookworm, sid, bullseye2.0.11-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mosquittosourcestretch(not affected)
mosquittosourcebuster(not affected)
mosquittosource(unstable)2.0.10-1986701

Notes

[buster] - mosquitto <not-affected> (Vulnerable code introduced in 2.0)
[stretch] - mosquitto <not-affected> (Vulnerable code introduced in 2.0)
https://bugs.eclipse.org/bugs/show_bug.cgi?id=572608

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