Description
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. In verions prior to 4.6, an attacker can perform a denial-of-service attack by triggering an infinite loop in the processing of IPv6 neighbor solicitation (NS) messages. This type of attack can effectively shut down the operation of the system because of the cooperative scheduling used for the main parts of Contiki-NG and its communication stack. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.
References (1)
Core 1
Core References
Third Party Advisory x_refsource_confirm
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-rr5j-j8m8-fc4f
Scores
CVSS v3
7.5
EPSS
0.0030
EPSS Percentile
52.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-835
Status
published
Products (1)
contiki-ng/contiki-ng
< 4.6
Published
Jun 18, 2021
Tracked Since
Feb 18, 2026