published December 11, 2020
NVD has not assigned a CVSS score to this record. It sits in the 99.1th percentile for exploit probability.
⚠️ A buffer overflow just waiting for a bad address! In Contiki and Contiki-NG, the DNS answer length isn’t checked, leading to potential chaos when NAT64 is enabled. 🔥 Think of it like a delivery driver bringing you a package that's ten times larger than your front door — if the delivery isn’t managed properly, it’s going to cause a mess in your living room! If an attacker exploits this oversight, they could leverage the buffer overflow to crash the system or inject malicious code. This could lead to service disruptions or unauthorized access, significantly impacting network reliability and security.
Think of it like a delivery driver bringing you a package that's ten times larger than your front door — if the delivery isn’t managed properly, it’s going to cause a mess in your living room! The vulnerability exists in how the code for parsing Type A domain name answers in ip64-dns64.c fails to verify the sanity of the address length, allowing for arbitrary-length addresses to cause a buffer overflow.
If an attacker exploits this oversight, they could leverage the buffer overflow to crash the system or inject malicious code. This could lead to service disruptions or unauthorized access, significantly impacting network reliability and security. To mitigate this risk, ensure your Contiki or Contiki-NG version is updated to the latest release that addresses this issue. Regularly audit your DNS configurations and consider disabling NAT64 if not needed. You’ve got this! Follow these steps and you’ll be one step closer to securing your network! 🛡️