There is a vulnerability in DHCPv6 packet parsing code that could be explored by remote attacker to craft a packet that could cause buffer overflow in a memcpy call, leading to out-of-bounds memory write that would cause dhcp6relay to crash. Dhcp6relay is a critical process and could cause dhcp relay docker to shutdown. Discovered by Eugene Lim of GovTech Singapore.
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.
| Link | Tags |
|---|---|
| https://github.com/sonic-net/sonic-buildimage/security/advisories/GHSA-m4qf-8rrq-mph9 | third party advisory |
| https://govtech-csg.github.io/security-advisories/2022/11/14/CVE-2022-0324.html | third party advisory |