CVE-2023-24609

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-190

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://www.rambus.com/security/software-protocols/tls-toolkit/Product
https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842Exploit, Third Party Advisory
https://www.rambus.com/security/software-protocols/tls-toolkit/Product
https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842Exploit, Third Party Advisory

Timeline

Published: Dec 22, 2023
Last modified: Jun 17, 2026
NVD status: Modified

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