A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.

A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.

bson-devel-2.5.3-1.1 on GA media

Affected: Ubuntu:Pro:14.04:LTS: mongodb, Ubuntu:Pro:16.04:LTS: mongodb, Ubuntu:Pro:18.04:LTS: mongodb, Ubuntu:Pro:20.04:LTS: mongodb

A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.

Ein Angreifer kann mehrere Schwachstellen in MongoDB ausnutzen, um Abfrage- und Zugriffsbeschränkungen zu umgehen, nicht vorgesehene Datensätze oder Dateien auszulesen, zu verändern oder zu löschen sowie unter bestimmten Voraussetzungen MongoDB-Server oder Anwendungen zum Absturz zu bringen und dadurch einen Denial-of-Service zu verursachen.