CVE-2020-5778: Message 8 Unauthenticated Remote DoS.
A flaw exists in ttmd.exe due to improper validation of user-supplied data when processing a type 8 message sent to default TCP RequestPort 10200.
An unauthenticated, remote attacker can exploit this issue, via a specially crafted message, to terminate ttmd.exe.
A type 8 message includes a 2-byte field indicating how many name-value pairs are in the message. The attacker can specify a very large value (i.e., 0xffff) in this field to cause the vulnerable code to access data beyond the message boundary, resulting in memory access violation in ttmd.exe and subsequent process termination:
CVE-2020-5779: Message 4 Unauthenticated Remote DoS
A flaw relates to invalid parameter handling when calling strcpy_s() with an invalid parameter (i.e., a long src string parameter) as a part of processing a type 4 message sent to default TCP RequestPort 10200. It's been observed that ttmd.exe terminates as a result.
An unauthenticated, remote attacker can exploit this issue, via a specially crafted message, to terminate ttmd.exe:
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