An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. A buffer overflow is present due to an integer underflow during 6LoWPAN fragment processing in the face of truncated fragments in os/net/ipv6/sicslowpan.c. This results in accesses of unmapped memory, crashing the application. An attacker can cause a denial-of-service via a crafted 6LoWPAN frame.
|https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4||Release Notes Third Party Advisory|
|https://github.com/contiki-ng/contiki-ng/pull/972||Patch Third Party Advisory|
|https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf||Technical Description Third Party Advisory|
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