by Kastro
Paper/Archive/CVE-2022-35927

CVE-2022-35927

contiki-ng contiki-ng — Unverified DIO prefix info lengths in RPL-Classic in Contiki-NG

EPSS 2%CVSS 9.8
critical.is priorityof 100
46
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 82.2.822 × 2016.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
contiki-ng< 4.7–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgithub.com/contiki-ng/contiki-ng/security/advisories/GHSA-9rm9-3phh-p4wmrefgithub.com/contiki-ng/contiki-ng/pull/1589refgithub.com/contiki-ng/contiki-ng/pull/1589/commits/4fffab0e632c4d01910fa957d1fd9ef321eb87d2