Sunday, December 26, 2021

MongoDB: Improper Input Validation (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 4.0.25; MongoDB Server v4.2 versions prior to 4.2.14; MongoDB Server v4.4 versions prior to 4.4.6.
Solution(s)
  • mongodb-upgrade-4_0_25
  • mongodb-upgrade-4_2_14
  • mongodb-upgrade-4_4_6


  • References
  • https://attackerkb.com/topics/cve-2021-20330
  • CVE - 2021-20330
  • https://jira.mongodb.org/browse/SERVER-36263




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