CVE-2024-28755 Security feature bypass in n/a

Medium 6.5 Published Updated

Attackers can force TLS version downgrades or cause denial of service by exploiting a session reset flaw in Mbed TLS.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2024-28755?

CVE-2024-28755 is a medium-severity vulnerability in n/a, published on 3 Apr 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-326

Which versions are affected by CVE-2024-28755?

It affects 1 product.

Products include Trustedfirmware Mbed Tls.

How do I fix CVE-2024-28755?

Upgrade to a fixed version.

Is CVE-2024-28755 being exploited?

There is no known exploitation of CVE-2024-28755 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2024-28755, GHSA-9w5c-29mx-552c.

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