critical9.8
CVE-2020-24336
An issue was discovered in Contiki through 3.0 and Contiki-NG through 4.5.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Contiki-Ng | Contiki-Ng | through 4.5 |
| Contiki-Os | Contiki | through 3.0 |