[原文]LogiSphere 0.9.9j does not restrict the number of messages that can be sent, which allows remote attackers to cause a denial of service by sending a large number of messages via the msg command. NOTE: due to lack of appropriate details by the original researcher, it is unclear whether this description accurately reflects the discloser's claim and is distinct from the XSS issue.
Logisphere Server a flaw that may allow a remote denial of service. The issue is triggered when a user sends enough 'msg' commands to the Server to cause a flood of on-screen 'msg' windows to appear, and will result in loss of availability for the service.
Upgrade to version 1.2.4 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.