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Change History

In open62541 1.5.5, a server-side use-after-free exists in the local MonitoredItem callback path. The issue occurs when UA_Subscription_localPublish continues to use the current UA_Notification after a callback invokes UA_Server_deleteMonitoredItem for the current local MonitoredItem. This allows a remote attacker to cause a denial of service.

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

https://github.com/open62541/open62541/blob/v1.5.5/include/open62541/server.h

https://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_services_monitoreditem.c

https://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_subscription.c

https://github.com/open62541/open62541/issues/8131

[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]