Medium severity · published Apr 3, 2024
CVE-2024-28755
An issue was discovered in Mbed TLS 3.5.x before 3.6.0
6.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 35% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MT
Mbed Tls · Trustedfirmware
3.5.0 through 3.6.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-28755
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-28755
Release Notes
https://github.com/Mbed-TLS/mbedtls/releases/tag/v3.6.0
Not Applicable
https://github.com/hey3e
Not Applicable
https://hey3e.github.io
Vendor Advisory
https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/
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