CVE-2024-28836 Information

Description

An issue was discovered in Mbed TLS 3.5.x before 3.6.0. When negotiating the TLS version on the server side it can fall back to the TLS 1.2 implementation of the protocol if it is disabled. If the TLS 1.2 implementation was disabled at build time a TLS 1.2 client could put a TLS 1.3-only server into an infinite loop processing a TLS 1.2 ClientHello resulting in a denial of service. If the TLS 1.2 implementation was disabled at runtime a TLS 1.2 client can successfully establish a TLS 1.2 connection with the server.

Reference

https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/ https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0