Vulnerabilities > CVE-2020-36426 - Out-of-bounds Read vulnerability in multiple products

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

arm

debian

CWE-125

NVD

Published: 2021-07-19

Updated: 2024-11-21

Summary

An issue was discovered in Arm Mbed TLS before 2.24.0. mbedtls_x509_crl_parse_der has a buffer over-read (of one byte).

Vulnerable Configurations

Part	Description	Count
Application	Arm ARM Mbed TLS - ARM Mbed TLS 1.3.0 ARM Mbed TLS 1.3.1 ARM Mbed TLS 1.3.2 ARM Mbed TLS 1.3.3 ARM Mbed TLS 1.3.4 ARM Mbed TLS 1.3.5 ARM Mbed TLS 1.3.6 ARM Mbed TLS 1.3.7 ARM Mbed TLS 1.3.8 ARM Mbed TLS 1.3.9 ARM Mbed TLS 1.3.10 ARM Mbed TLS 1.3.11 ARM Mbed TLS 1.3.12 ARM Mbed TLS 1.3.13 ARM Mbed TLS 1.3.14 ARM Mbed TLS 1.3.15 ARM Mbed TLS 1.3.16 ARM Mbed TLS 1.3.17 ARM Mbed TLS 1.3.18 ARM Mbed TLS 1.3.19 ARM Mbed TLS 1.3.20 ARM Mbed TLS 1.3.21 ARM Mbed TLS 1.3.22 ARM Mbed TLS 2.0.0 ARM Mbed TLS 2.1.0 ARM Mbed TLS 2.1.1 ARM Mbed TLS 2.1.2 ARM Mbed TLS 2.1.3 ARM Mbed TLS 2.1.4 ARM Mbed TLS 2.1.5 ARM Mbed TLS 2.1.6 ARM Mbed TLS 2.1.7 ARM Mbed TLS 2.1.8 ARM Mbed TLS 2.1.9 ARM Mbed TLS 2.1.10 ARM Mbed TLS 2.1.11 ARM Mbed TLS 2.1.12 ARM Mbed TLS 2.1.13 ARM Mbed TLS 2.1.14 ARM Mbed TLS 2.1.15 ARM Mbed TLS 2.1.16 ARM Mbed TLS 2.1.17 ARM Mbed TLS 2.1.18 ARM Mbed TLS 2.2.0 ARM Mbed TLS 2.2.1 ARM Mbed TLS 2.2.2 ARM Mbed TLS 2.2.3 ARM Mbed TLS 2.3.0 ARM Mbed TLS 2.3.1 ARM Mbed TLS 2.3.2 ARM Mbed TLS 2.4.0 ARM Mbed TLS 2.4.1 ARM Mbed TLS 2.4.2 ARM Mbed TLS 2.5.0 ARM Mbed TLS 2.5.1 ARM Mbed TLS 2.6.0 ARM Mbed TLS 2.6.1 ARM Mbed TLS 2.7.0 ARM Mbed TLS 2.7.1 ARM Mbed TLS 2.7.2 ARM Mbed TLS 2.7.3 ARM Mbed TLS 2.7.4 ARM Mbed TLS 2.7.5 ARM Mbed TLS 2.7.6 ARM Mbed TLS 2.7.7 ARM Mbed TLS 2.7.8 ARM Mbed TLS 2.7.9 ARM Mbed TLS 2.7.10 ARM Mbed TLS 2.7.11 ARM Mbed TLS 2.7.12 ARM Mbed TLS 2.7.13 ARM Mbed TLS 2.7.14 ARM Mbed TLS 2.7.15 ARM Mbed TLS 2.7.16 ARM Mbed TLS 2.8.0 ARM Mbed TLS 2.9.0 ARM Mbed TLS 2.10.0 ARM Mbed TLS 2.11.0 ARM Mbed TLS 2.12.0 ARM Mbed TLS 2.13.0 ARM Mbed TLS 2.13.1 ARM Mbed TLS 2.14.0 ARM Mbed TLS 2.14.1 ARM Mbed TLS 2.15.0 ARM Mbed TLS 2.15.1 ARM Mbed TLS 2.16.0 ARM Mbed TLS 2.16.1 ARM Mbed TLS 2.16.2 ARM Mbed TLS 2.16.3 ARM Mbed TLS 2.16.4 ARM Mbed TLS 2.16.5 ARM Mbed TLS 2.16.6 ARM Mbed TLS 2.16.7 ARM Mbed TLS 2.17.0 ARM Mbed TLS 2.18.0 ARM Mbed TLS 2.18.1 ARM Mbed TLS 2.19.0 ARM Mbed TLS 2.19.1 ARM Mbed TLS 2.20.0 ARM Mbed TLS 2.21.0 ARM Mbed TLS 2.22.0 ARM Mbed TLS 2.23.0	137
OS	Debian Debian Debian Linux 10.0	1

Common Weakness Enumeration (CWE)

CWE-125 - Out-of-bounds Read

Common Attack Pattern Enumeration and Classification (CAPEC)

Overread Buffers
An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

References