Vulnerability Description
An issue was discovered in Contiki through 3.0 and Contiki-NG through 4.5. The code for parsing Type A domain name answers in ip64-dns64.c doesn't verify whether the address in the answer's length is sane. Therefore, when copying an address of an arbitrary length, a buffer overflow can occur. This bug can be exploited whenever NAT64 is enabled.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Contiki-Ng | Contiki-Ng | <= 4.5 |
| Contiki-Os | Contiki | <= 3.0 |
Related Weaknesses (CWE)
References
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party AdvisoryUS Government Resource
- https://www.kb.cert.org/vuls/id/815128Third Party AdvisoryUS Government Resource
- https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01Third Party AdvisoryUS Government Resource
- https://www.kb.cert.org/vuls/id/815128Third Party AdvisoryUS Government Resource
FAQ
What is CVE-2020-24336?
CVE-2020-24336 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered in Contiki through 3.0 and Contiki-NG through 4.5. The code for parsing Type A domain name answers in ip64-dns64.c doesn't verify whether the address in the answer's length is ...
How severe is CVE-2020-24336?
CVE-2020-24336 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2020-24336?
Check the references section above for vendor advisories and patch information. Affected products include: Contiki-Ng Contiki-Ng, Contiki-Os Contiki.