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CVE-2023-24609 Details

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.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://www.rambus.com/security/software-protocols/tls-toolkit/	CVE	Product
https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842	CVE	ExploitThird Party Advisory
https://www.rambus.com/security/software-protocols/tls-toolkit/	[email protected]	Product
https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842	[email protected]	ExploitThird Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-190	Integer Overflow or Wraparound	[email protected]

Affected Products

Product	Versions
matrixssl matrixssl	>= 4.0.0, <= 4.6.0
CPE cpe:2.3:a:matrixssl:matrixssl:::::::: Remediation No remediation found in references.
rambus tls toolkit	All versions
CPE cpe:2.3:a:rambus:tls_toolkit:-:::::::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Jan 3, 2024	Initial Analysis	[email protected]
Dec 22, 2023	New CVE Received	[email protected]