CVE-2022-35927

Unverified DIO prefix info lengths in RPL-Classic in Contiki-NG

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.

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.11%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: contiki-ng contiki-ng
Published at:
Updated at:

References

Link Tags
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-9rm9-3phh-p4wm third party advisory
https://github.com/contiki-ng/contiki-ng/pull/1589 third party advisory
https://github.com/contiki-ng/contiki-ng/pull/1589/commits/4fffab0e632c4d01910fa957d1fd9ef321eb87d2 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2022-35927?
CVE-2022-35927 has been scored as a high severity vulnerability.
How to fix CVE-2022-35927?
To fix CVE-2022-35927, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-35927 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2022-35927 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-35927?
CVE-2022-35927 affects contiki-ng contiki-ng.
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