Memory Leak Vulnerability in RIOT TCP Implementation (gnrc_tcp) Allows Network Thread Disruption

CVE-2019-15134 · HIGH Severity

AV:N/AC:L/AU:N/C:N/I:N/A:C

RIOT through 2019.07 contains a memory leak in the TCP implementation (gnrc_tcp), allowing an attacker to consume all memory available for network packets and thus effectively stopping all network threads from working. This is related to _receive in sys/net/gnrc/transport_layer/tcp/gnrc_tcp_eventloop.c upon receiving an ACK before a SYN.

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