Vulnerability Description
Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the received packet buffer contains enough data as needed for that field. But no similar check is done before decompressing the IPv6 address. Therefore, up to 16 bytes can be read out of bounds on the line with the statement `memcpy(&ipaddr->u8[16 - postcount], iphc_ptr, postcount);`. The value of `postcount` depends on the address compression used in the received packet and can be controlled by the attacker. As a result, an attacker can inject a packet that causes an out-of-bound read. As of time of publication, a patched version is not available. As a workaround, one can apply the changes in Contiki-NG pull request #2509 to patch the system.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Contiki-Ng | Contiki-Ng | <= 4.9 |
Related Weaknesses (CWE)
References
- https://github.com/contiki-ng/contiki-ng/pull/2509Issue TrackingPatch
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-2v4c-9p48-g9prVendor Advisory
- https://github.com/contiki-ng/contiki-ng/pull/2509Issue TrackingPatch
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-2v4c-9p48-g9prVendor Advisory
FAQ
What is CVE-2023-37281?
CVE-2023-37281 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when processing the various IPv6 header fields during IPHC header decompression, Contiki-NG confirms the re...
How severe is CVE-2023-37281?
CVE-2023-37281 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-37281?
Check the references section above for vendor advisories and patch information. Affected products include: Contiki-Ng Contiki-Ng.