VULNERABILITY INTELLIGENCE

CVE-2023-24609

CVSS score7.5 HIGH

EPSS probability0.73%

CISA KEVNot currently listed

Published2023-12-22

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Matrix SSL 4.x through 4.6.0 and Rambus TLS Toolkit have a length-subtraction integer overflow for Client Hello Pre-Shared Key extension parsing in the TLS 1.3 server. An attacked device calculates an SHA-2 hash over at least 65 KB (in RAM). With a large number of crafted TLS messages, the CPU becomes heavily loaded. This occurs in tls13VerifyBinder and tls13TranscriptHashUpdate.

Weakness classification

nvd@nist.gov: CWE-190

Primary references

cve@mitre.org — Product
cve@mitre.org — Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Product
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory