CVE-2024-47181: Unaligned memory access in RPL option processing in Contiki-NG
First published: Wed Nov 27 2024(Updated: )
Contiki-NG is an open-source, cross-platform operating system for IoT devices. An unaligned memory access can be triggered in the two RPL implementations of the Contiki-NG operating system. The problem can occur when either one of these RPL implementations is enabled and connected to an RPL instance. If an IPv6 packet containing an odd number of padded bytes before the RPL option, it can cause the rpl_ext_header_hbh_update function to read a 16-bit integer from an odd address. The impact of this unaligned read is architecture-dependent, but can potentially cause the system to crash. The problem has not been patched as of release 4.9, but will be included in the next release. One can apply the changes in Contiki-NG pull request #2962 to patch the system or wait for the next release.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Naranjascontocados | <4.9 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-47181?
CVE-2024-47181 has been classified with a moderate severity due to potential unaligned memory access vulnerabilities in Contiki-NG.
How do I fix CVE-2024-47181?
To fix CVE-2024-47181, update your Contiki-NG to the latest version beyond 4.9 that addresses this vulnerability.
What causes CVE-2024-47181 in Contiki-NG?
CVE-2024-47181 is caused by unaligned memory access in the RPL implementations of the Contiki-NG operating system.
Which versions of Contiki-NG are affected by CVE-2024-47181?
CVE-2024-47181 affects all versions of Contiki-NG up to and including version 4.9.
Is CVE-2024-47181 related to IoT security concerns?
Yes, CVE-2024-47181 poses a security concern for IoT devices using the Contiki-NG operating system due to its impact on RPL implementations.
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