Vulnerabilities > CVE-2021-21410 - Unspecified vulnerability in Contiki-Ng

CVSS 9.1 - CRITICAL

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

HIGH

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

contiki-ng

critical

NVD

Published: 2021-06-18

Updated: 2024-11-21

Summary

Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An out-of-bounds read can be triggered by 6LoWPAN packets sent to devices running Contiki-NG 4.6 and prior. The IPv6 header decompression function (<code>uncompress_hdr_iphc</code>) does not perform proper boundary checks when reading from the packet buffer. Hence, it is possible to construct a compressed 6LoWPAN packet that will read more bytes than what is available from the packet buffer. As of time of publication, there is not a release with a patch available. 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

Summary

Vulnerable Configurations

References