Bug 2272883 (CVE-2024-28836)

Summary: CVE-2024-28836 Mbed-TLS: Denial of Service
Product: [Other] Security Response Reporter: Avinash Hanwate <ahanwate>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Bug Depends On: 2272884, 2272885    
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Description Avinash Hanwate 2024-04-03 04:58:51 UTC 
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.

https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0
https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/
Comment 1 Avinash Hanwate 2024-04-03 04:59:09 UTC 
Created mbedtls tracking bugs for this issue:

Affects: epel-all [bug 2272885]
Affects: fedora-all [bug 2272884]