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CVE-2021-20330

Related Vulnerabilities: CVE-2021-20330  

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 4.0.25; MongoDB Server v4.2 versions prior to 4.2.14; MongoDB Server v4.4 versions prior to 4.4.6.

Source

Description

The MITRE CVE dictionary describes this issue as:

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 4.0.25; MongoDB Server v4.2 versions prior to 4.2.14; MongoDB Server v4.4 versions prior to 4.4.6.

Additional Information

  • Bugzilla 2035009: CVE-2021-20330 mongodb: specific replication command with malformed oplog entries can crash secondaries
  • CWE-20: Improper Input Validation
  • FAQ: Frequently asked questions about CVE-2021-20330

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