Vulnerabilities > CVE-2021-21279 - Infinite Loop vulnerability in Contiki-Ng

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

contiki-ng

CWE-835

NVD

Published: 2021-06-18

Updated: 2021-06-22

Summary

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.

Vulnerable Configurations

Part	Description	Count
OS	Contiki-Ng Contiki NG Contiki NG - Contiki NG Contiki NG 2.0 Contiki NG Contiki NG 2.1 Contiki NG Contiki NG 2.2 Contiki NG Contiki NG 2.2.1 Contiki NG Contiki NG 2.2.2 Contiki NG Contiki NG 2.2.3 Contiki NG Contiki NG 2.3 Contiki NG Contiki NG 2.4 Contiki NG Contiki NG 2.5 Contiki NG Contiki NG 2.6 Contiki NG Contiki NG 2.7 Contiki NG Contiki NG 3.0 Contiki NG Contiki NG 4.0 Contiki NG Contiki NG 4.1 Contiki NG Contiki NG 4.2 Contiki NG Contiki NG 4.3 Contiki NG Contiki NG 4.4 Contiki NG Contiki NG 4.5 Contiki NG Contiki NG 4.6	21

Common Weakness Enumeration (CWE)

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

References

https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-rr5j-j8m8-fc4f