CVE-2024-28836
published 2024-04-03CVE-2024-28836: 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…
PriorityP429medium5.4CVSS 3.1
AVNACLPRLUINSUCLILAN
EPSS
0.41%
33.8th percentile
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.
Affected
2 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | mbedtls | — | — |
| trustedfirmware | mbed_tls | >= 3.5.0 < 3.6.0 | 3.6.0 |
CVSS provenance
nvdv3.15.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
osv5.4MEDIUM
vendor_debian5.4LOW
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VulDB
mbed TLS 3.5.x ClientHello inadequate encryption
vuldb·2026-06-06·CVSS 5.4
CVE-2024-28836 [MEDIUM] mbed TLS 3.5.x ClientHello inadequate encryption
A vulnerability identified as problematic has been detected in mbed TLS 3.5.x. The impacted element is an unknown function of the component ClientHello Handler. The manipulation leads to inadequate encryption strength.
This vulnerability is traded as CVE-2024-28836. It is possible to initiate the attack remotely. There is no exploit available.
You should upgrade the affected component.
GHSA
GHSA-39fv-p94v-rg6c: An issue was discovered in Mbed TLS 3
ghsa_unreviewed·2024-04-03
CVE-2024-28836 [MEDIUM] CWE-835 GHSA-39fv-p94v-rg6c: An issue was discovered in Mbed TLS 3
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.
OSV
CVE-2024-28836: An issue was discovered in Mbed TLS 3
osv·2024-04-03·CVSS 5.4
CVE-2024-28836 [MEDIUM] CVE-2024-28836: An issue was discovered in Mbed TLS 3
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.
Debian
CVE-2024-28836: mbedtls - An issue was discovered in Mbed TLS 3.5.x before 3.6.0. When negotiating the TLS...
vendor_debian·2024·CVSS 5.4
CVE-2024-28836 [MEDIUM] CVE-2024-28836: mbedtls - An issue was discovered in Mbed TLS 3.5.x before 3.6.0. When negotiating the TLS...
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.
Scope: local
bookworm: resolved
bullseye: resolved
forky: resolved
sid: resolved
trixie: resolved
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2024-04-03
Published