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.
Advisories 2
- WID-SEC-2022-1044 TCP/IP Stack: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 27, 2023
- ICSA-20-343-01 Multiple Embedded TCP/IP Stacks CISA ICS & IT advisories · Dec 8, 2020