Vulnerability Description
Contiki-NG is an open-source, cross-platform operating system for IoT devices. Because of insufficient validation of IPv6 neighbor discovery options in Contiki-NG, attackers can send neighbor solicitation packets that trigger an out-of-bounds read. The problem exists in the module os/net/ipv6/uip-nd6.c, where memory read operations from the main packet buffer, <code>uip_buf</code>, are not checked if they go out of bounds. In particular, this problem can occur when attempting to read the 2-byte option header and the Source Link-Layer Address Option (SLLAO). This attack requires ipv6 be enabled for the network. The problem has been patched in the develop branch of Contiki-NG. The upcoming 4.8 release of Contiki-NG will include the patch.Users unable to upgrade may apply the patch in Contiki-NG PR #1654.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Contiki-Ng | Contiki-Ng | < 4.8 |
Related Weaknesses (CWE)
References
- https://github.com/contiki-ng/contiki-ng/pull/1654PatchThird Party Advisory
- https://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78PatchThird Party Advisory
- https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8Third Party Advisory
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386Third Party Advisory
- https://github.com/contiki-ng/contiki-ng/pull/1654PatchThird Party Advisory
- https://github.com/contiki-ng/contiki-ng/pull/1654/commits/a4597001d50a04f4b9c78PatchThird Party Advisory
- https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.8Third Party Advisory
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-4hpq-4f53-w386Third Party Advisory
FAQ
What is CVE-2022-35926?
CVE-2022-35926 is a vulnerability with a CVSS score of 5.9 (MEDIUM). Contiki-NG is an open-source, cross-platform operating system for IoT devices. Because of insufficient validation of IPv6 neighbor discovery options in Contiki-NG, attackers can send neighbor solicita...
How severe is CVE-2022-35926?
CVE-2022-35926 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-35926?
Check the references section above for vendor advisories and patch information. Affected products include: Contiki-Ng Contiki-Ng.