title: Post-auth queries on compound index may crash mongod
description: A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner. This issue affects MongoDB Server v3.6 versions prior to 3.6.9 and MongoDB Server v4.0 versions prior to 4.0.3.
problem types: CWE-394 Unexpected Status Code or Return Value
affected:
{
defaultStatus: unaffected
product: MongoDB Server
vendor: MongoDB Inc.
versions:
lessThan: 3.6.9, status: affected, version: 3.6, versionType: custom
lessThan: 4.0.3, status: affected, version: 4.0, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 6.5
baseSeverity: MEDIUM
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL