CVE-2022-35927 Information

Description

Contiki-NG is an open-source cross-platform operating system for IoT devices. In the RPL-Classic routing protocol implementation in the Contiki-NG operating system an incoming DODAG Information Option (DIO) control message can contain a prefix information option with a length parameter. The value of the length parameter is not validated however and it is possible to cause a buffer overflow when copying the prefix in the set_ip_from_prefix function. This vulnerability affects anyone running a Contiki-NG version prior to 4.7 that can receive RPL DIO messages from external parties. To obtain a patched version users should upgrade to Contiki-NG 4.7 or later. There are no workarounds for this issue.

Reference

https://github.com/contiki-ng/contiki-ng/pull/1589/commits/4fffab0e632c4d01910fa957d1fd9ef321eb87d2 https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-9rm9-3phh-p4wm https://github.com/contiki-ng/contiki-ng/pull/1589