CVE-2020-24336 is a critical buffer overflow vulnerability affecting Contiki through version 3.0 and Contiki-NG through version 4.5. This flaw, residing in the ip64-dns64.c code, occurs when parsing Type A domain name answers without proper length verification, leading to arbitrary length address copying. With a CVSS score of 9.8 (Critical), it is easily exploitable over the network with low attack complexity, allowing for complete compromise of confidentiality, integrity, and availability when NAT64 is enabled. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, notably being linked to the "AMNESIA:33" vulnerabilities.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 4.5CPE matchmatch criteria | cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:* | ||
<= 3.0CPE matchmatch criteria | cpe:2.3:o:contiki-os:contiki:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.