Contiki-NG up to 4.6 Routing Protocol set_ip_from_prefix length buffer overflow

Summaryinfo

A vulnerability labeled as critical has been found in Contiki-NG up to 4.6. This affects the function set_ip_from_prefix of the component Routing Protocol Handler. Executing a manipulation of the argument length can lead to buffer overflow. This vulnerability is tracked as CVE-2022-35927. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical was found in Contiki-NG up to 4.6. This vulnerability affects the function set_ip_from_prefix of the component Routing Protocol Handler. The manipulation of the argument length with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was disclosed 08/05/2022 as GHSA-9rm9-3phh-p4wm. The advisory is available at github.com. This vulnerability was named CVE-2022-35927 since 07/15/2022. Technical details are known, but there is no available exploit.

Upgrading to version 4.7 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Contiki-NG

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6

License

• open-source

Website

• Product: https://github.com/contiki-ng/contiki-ng/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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