Vulnerability Description
An issue was discovered in Contiki through 3.0. When sending an ICMPv6 error message because of invalid extension header options in an incoming IPv6 packet, there is an attempt to remove the RPL extension headers. Because the packet length and the extension header length are unchecked (with respect to the available data) at this stage, and these variables are susceptible to integer underflow, it is possible to construct an invalid extension header that will cause memory corruption issues and lead to a Denial-of-Service condition. This is related to rpl-ext-header.c.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Contiki-Os | Contiki | <= 3.0 |
Related Weaknesses (CWE)
References
- https://github.com/contiki-os/contiki/releasesRelease NotesThird Party Advisory
- https://www.kb.cert.org/vuls/id/815128Third Party AdvisoryUS Government Resource
- https://github.com/contiki-os/contiki/releasesRelease NotesThird Party Advisory
- https://www.kb.cert.org/vuls/id/815128Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2021-28362?
CVE-2021-28362 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered in Contiki through 3.0. When sending an ICMPv6 error message because of invalid extension header options in an incoming IPv6 packet, there is an attempt to remove the RPL exten...
How severe is CVE-2021-28362?
CVE-2021-28362 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-28362?
Check the references section above for vendor advisories and patch information. Affected products include: Contiki-Os Contiki.