What is CVE-2020-36426?

CVE-2020-36426 is a vulnerability discovered in Arm Mbed TLS before version 2.24.0, which allows a buffer over-read of one byte in the mbedtls_x509_crl_parse_der function.

What is the severity of CVE-2020-36426?

The severity of CVE-2020-36426 is high with a CVSS score of 7.5.

Which software is affected by CVE-2020-36426?

The affected software includes Arm Mbed TLS versions up to and excluding 2.7.17, versions between 2.8.0 and 2.16.8 (inclusive), and versions between 2.17.0 and 2.24.0 (inclusive). Debian Linux version 10.0 is also affected.

How can I fix CVE-2020-36426?

To fix CVE-2020-36426, update to Arm Mbed TLS version 2.24.0 or later, which contains a fix for the vulnerability.

Are there any references available for CVE-2020-36426?

Yes, you can refer to the following links for more information: [Gentoo Bug Tracker](https://bugs.gentoo.org/740108), [Arm Mbed TLS Release v2.16.8](https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8), [Arm Mbed TLS Release v2.24.0](https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0).

Vulnerability/
CVE-2020-36426

high

7.5

CWE

125

19/7/2021

4/8/2024

CVE-2020-36426

First published: Mon Jul 19 2021(Updated: )

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).

Credit: cve@mitre.org

Affected Software	Affected Version	How to fix
ARM mbed TLS	<2.7.17
ARM mbed TLS	>=2.8.0<2.16.8
ARM mbed TLS	>=2.17.0<2.24.0
Debian Debian Linux	=10.0

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is CVE-2020-36426?
CVE-2020-36426 is a vulnerability discovered in Arm Mbed TLS before version 2.24.0, which allows a buffer over-read of one byte in the mbedtls_x509_crl_parse_der function.
What is the severity of CVE-2020-36426?
The severity of CVE-2020-36426 is high with a CVSS score of 7.5.
Which software is affected by CVE-2020-36426?
The affected software includes Arm Mbed TLS versions up to and excluding 2.7.17, versions between 2.8.0 and 2.16.8 (inclusive), and versions between 2.17.0 and 2.24.0 (inclusive). Debian Linux version 10.0 is also affected.
How can I fix CVE-2020-36426?
To fix CVE-2020-36426, update to Arm Mbed TLS version 2.24.0 or later, which contains a fix for the vulnerability.
Are there any references available for CVE-2020-36426?
Yes, you can refer to the following links for more information: [Gentoo Bug Tracker](https://bugs.gentoo.org/740108), [Arm Mbed TLS Release v2.16.8](https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8), [Arm Mbed TLS Release v2.24.0](https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0).

collector/nvd-index
agent/references
agent/type
agent/tags
agent/event
agent/weakness
agent/severity
agent/author
agent/description
agent/last-modified-date
agent/softwarecombine
agent/first-publish-date
collector/mitre-cve
source/MITRE
vendor/arm
canonical/arm mbed tls
version/arm mbed tls/2.8.0
version/arm mbed tls/2.17.0
vendor/debian
canonical/debian debian linux
version/debian debian linux/10.0

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.