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PUBLISHED

CVE-2024-28836

Reserved:2024-03-11
Published:2024-04-03
Updated:2024-04-03

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.

References

https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/

https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0

cve.org CVE-2024-28836

nvd.nist.gov CVE-2024-28836

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