CVE-2021-20330 — Specific replication command with malformed oplog entries can crash secondaries
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 servic…
Published: 2021-12-15 · CVSS: 6.5 · CVSS 3.1
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 Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7