CVE-2023-24609

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Matrix SSL 4.x a 4.6.0 y Rambus TLS Toolkit tienen un desbordamiento de enteros de sustracción de longitud para el análisis de la extensión Client Hello Pre-Shared Key en el servidor TLS 1.3. Un dispositivo atacado calcula un hash SHA-2 en al menos 65 KB (en RAM). Con una gran cantidad de mensajes TLS manipulados, la CPU se carga mucho. Esto ocurre en tls13VerifyBinder y tls13TranscriptHashUpdate.

*Credits: N/A

CVSS Scores

NISTv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-01-30 CVE Reserved
2023-12-22 CVE Published
2024-08-02 CVE Updated
2024-08-02 First Exploit
2024-11-21 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-190: Integer Overflow or Wraparound

CAPEC

References (2)

URL	Tag	Source
https://www.rambus.com/security/software-protocols/tls-toolkit	Product

URL	Date	SRC
https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842	2024-08-02

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Matrixssl Search vendor "Matrixssl"		Matrixssl Search vendor "Matrixssl" for product "Matrixssl"				>= 4.0.0 <= 4.6.0 Search vendor "Matrixssl" for product "Matrixssl" and version " >= 4.0.0 <= 4.6.0"		-		Affected
Rambus Search vendor "Rambus"		Tls Toolkit Search vendor "Rambus" for product "Tls Toolkit"				-		-		Affected