title: Denial of service via malformed network packet
description: An unauthenticated client can trigger denial of service by issuing specially crafted wire protocol messages, which cause the message decompressor to incorrectly allocate memory. This issue affects MongoDB Server v4.2 versions prior to 4.2.1; MongoDB Server v4.0 versions prior to 4.0.13; MongoDB Server v3.6 versions prior to 3.6.15 and MongoDB Server v3.4 versions prior to 3.4.24.
problem types: CWE-839: Numeric Range Comparison Without Minimum Check
affected:
{
defaultStatus: unaffected
product: MongoDB Server
vendor: MongoDB Inc.
versions:
lessThan: 4.2.1, status: affected, version: 4.2, versionType: custom
lessThan: 4.0.13, status: affected, version: 4.0, versionType: custom
lessThan: 3.6.15, status: affected, version: 3.6, versionType: custom
lessThan: 3.4.24, status: affected, version: 3.4, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]
format: CVSS
scenarios: GENERAL