CVE-2024-28755: An issue was discovered in Mbed TLS 3.5.x before 3.6.0. When an SSL context was reset with the mbedtls_ssl_session_reset() API, the maximum TLS version to be…

PriorityP433medium6.5CVSS 3.1

AVNACLPRNUINSUCNILAL

EPSS

0.40%

32.1th percentile

An issue was discovered in Mbed TLS 3.5.x before 3.6.0. When an SSL context was reset with the mbedtls_ssl_session_reset() API, the maximum TLS version to be negotiated was not restored to the configured one. An attacker was able to prevent an Mbed TLS server from establishing any TLS 1.3 connection, potentially resulting in a Denial of Service or forced version downgrade from TLS 1.3 to TLS 1.2.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
debian	mbedtls	< mbedtls 3.6.0-3 (forky)	mbedtls 3.6.0-3 (forky)
mbed	mbedtls	>= 0 < 3.6.0-3	3.6.0-3
mbed	mbedtls	>= 0 < 3.6.0-3	3.6.0-3
trustedfirmware	mbed_tls	3.5.0 – 3.6.0	—

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

osv6.5MEDIUM

vendor_debian6.5MEDIUM

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