CVE-2023-50927: contiki-ng Out-of-bounds Read — Fix

Description

Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An attacker can trigger out-of-bounds reads in the RPL-Lite implementation of the RPL protocol in the Contiki-NG operating system. This vulnerability is caused by insufficient control of the lengths for DIO and DAO messages, in particular when they contain RPL sub-option headers. The problem has been patched in Contiki-NG 4.9. Users are advised to upgrade. Users unable to upgrade should manually apply the code changes in PR #2484.

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CVSS v3.1 Score

8.6

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor	Product	Versions
contiki-ng	contiki-ng	< 4.9

References

Advisories & Patches

https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-9423-rgj4-wjfw https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-9423-rgj4-wjfw

Other References

https://github.com/contiki-ng/contiki-ng/pull/2484 https://github.com/contiki-ng/contiki-ng/pull/2484

Frequently Asked Questions

What is CVE-2023-50927? +

Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. An attacker can trigger out-of-bounds reads in the RPL-Lite implementation of the RPL protocol in the Contiki-NG operating system. This vulnerability is caused by insufficient control of the lengths for DIO and DAO messages, in particular when they contain RPL sub-option headers. The problem has been patched in Contiki-NG 4.9. Users are advised to upgrade. Users unable to upgrade should manually apply the code changes in PR #2484. It has a CVSS v3.1 base score of 8.6 (HIGH).

How severe is CVE-2023-50927? +

CVE-2023-50927 has a CVSS v3.1 score of 8.6 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-50927? +

CVE-2023-50927 affects products from contiki-ng, specifically: contiki-ng. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-50927? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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