CVE-2020-17438

An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other
products. The code that reassembles fragmented packets fails to properly
validate the total length of an incoming packet specified in its IP header,
as well as the fragmentation offset value specified in the IP header. By
crafting a packet with specific values of the IP header length and the
fragmentation offset, attackers can write into the .bss section of the
program (past the statically allocated buffer that is used for storing the
fragmented data) and cause a denial of service in uip_reass() in uip.c, or
possibly execute arbitrary code on some target architectures.

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