Vulnerability · Published Nov 27, 2024 · Assigned by GitHub_M
CVE-2024-47181Unaligned memory access in RPL option processing in Contiki-NG
High 7.5
In plain English
A high-severity security flaw in contiki-ng from contiki-ng. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| contiki-ng | contiki-ng | <= 4.9 |
Weakness: CWE-704 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-crjw-x84h-h6x3 x_refsource_CONFIRM
- https://github.com/contiki-ng/contiki-ng/pull/2962 x_refsource_MISC