Buffer overflow in the Multimedia PC Client in Nortel Multimedia Communication Server (MCS) before Maintenance Release 3.5.8.3 and 4.0.25.3 allows remote attackers to cause a denial of service (crash) via a flood of "extraneous" messages, as demonstrated by the Nessus "Generic flood" denial of service plugin.
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary.