CVE-2021-20330

Name	CVE-2021-20330
Description	An attacker with basic CRUD permissions on a replicated collection can run the applyOps command with specially malformed oplog entries, resulting in a potential denial of service on secondaries. This issue affects MongoDB Server v4.0 versions prior to 4.0.27; MongoDB Server v4.2 versions prior to 4.2.16; MongoDB Server v4.4 versions prior to 4.4.9.
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
mongodb (PTS)	jessie	1:2.4.10-5+deb8u1	vulnerable
	stretch (security), stretch (lts), stretch	1:3.2.11-2+deb9u2	vulnerable

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

Package	Type	Release	Fixed Version	Urgency
mongodb	source	jessie	(unfixed)	end-of-life
mongodb	source	stretch	(unfixed)	end-of-life
mongodb	source	(unstable)	(unfixed)

[stretch] - mongodb <end-of-life> (https://lists.debian.org/debian-lts/2020/11/msg00058.html)
https://jira.mongodb.org/browse/SERVER-36263