CVE-2023-50926 Information

Description

Contiki-NG is an open-source cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be caused by an incoming DIO message when using the RPL-Lite implementation in the Contiki-NG operating system. More specifically the prefix information of the DIO message contains a field that specifies the length of an IPv6 address prefix. The value of this field is not validated which means that an attacker can set a value that is longer than the maximum prefix length. Subsequently a memcmp function call that compares different prefixes can be called with a length argument that surpasses the boundary of the array allocated for the prefix causing an out-of-bounds read. The problem has been patched in the \develop\ branch of Contiki-NG and is expected to be included in the next release. Users are advised to update as soon as they are able to or to manually apply the changes in Contiki-NG pull request 2721.

Reference

https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-jp4p-fq85-jch2 https://github.com/contiki-ng/contiki-ng/pull/2721