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Change History

An unauthenticated remote client can cause excessive CPU consumption on a MongoDB server by sending a specific combination of parameters to the awaitable hello command in exhaust mode. The server's handling of this combination results in a response loop that bypasses normal throttling, allowing a small number of connections to degrade server availability.

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE-770

https://jira.mongodb.org/browse/SERVER-128517

[{"vendor":"MongoDB","product":"MongoDB Server","defaultStatus":"unaffected","versions":[{"version":"7.0","lessThan":"7.0.39","versionType":"semver","status":"affected"},{"version":"8.0","lessThan":"8.0.28","versionType":"semver","status":"affected"},{"version":"8.2.0","lessThan":"8.2.12","versionType":"semver","status":"affected"},{"version":"8.3.0","lessThan":"8.3.7","versionType":"semver","status":"affected"}]}]