CVE-2022-35409

Severity Score

9.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An issue was discovered in Mbed TLS before 2.28.1 and 3.x before 3.2.0. In some configurations, an unauthenticated attacker can send an invalid ClientHello message to a DTLS server that causes a heap-based buffer over-read of up to 255 bytes. This can cause a server crash or possibly information disclosure based on error responses. Affected configurations have MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE enabled and MBEDTLS_SSL_IN_CONTENT_LEN less than a threshold that depends on the configuration: 258 bytes if using mbedtls_ssl_cookie_check, and possibly up to 571 bytes with a custom cookie check function.

Se ha descubierto un problema en Mbed TLS antes de la versión 2.28.1 y 3.x antes de la 3.2.0. En algunas configuraciones, un atacante no autenticado puede enviar un mensaje ClientHello no válido a un servidor DTLS que provoca una sobrelectura del búfer basada en el montón de hasta 255 bytes. Esto puede causar una caída del servidor o posiblemente la divulgación de información basada en las respuestas de error. Las configuraciones afectadas tienen MBEDTLS_SSL_DTLS_CLIENT_PORT_REUSE habilitado y MBEDTLS_SSL_IN_CONTENT_LEN menos que un umbral que depende de la configuración: 258 bytes si se utiliza mbedtls_ssl_cookie_check, y posiblemente hasta 571 bytes con una función de comprobación de cookies personalizada

*Credits: N/A

CVSS Scores

NISTv3.1 9.1

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-07-08 CVE Reserved
2022-07-15 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-10-18 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (3)

URL	Tag	Source
https://github.com/Mbed-TLS/mbedtls/releases	Release Notes
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html	Mailing List

URL	Date	SRC
https://mbed-tls.readthedocs.io/en/latest/security-advisories/advisories/mbedtls-security-advisory-2022-07.html	2024-08-03

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
Arm Search vendor "Arm"		Mbed Tls Search vendor "Arm" for product "Mbed Tls"				< 2.28.1 Search vendor "Arm" for product "Mbed Tls" and version " < 2.28.1"		-		Affected
Arm Search vendor "Arm"		Mbed Tls Search vendor "Arm" for product "Mbed Tls"				>= 3.0.0 < 3.2.0 Search vendor "Arm" for product "Mbed Tls" and version " >= 3.0.0 < 3.2.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				10.0 Search vendor "Debian" for product "Debian Linux" and version "10.0"		-		Affected