Denial of Service Vulnerability in Mbed TLS: Unbounded Calculations in mbedtls_mpi_exp_mod

Denial of Service Vulnerability in Mbed TLS: Unbounded Calculations in mbedtls_mpi_exp_mod

CVE-2020-36475 · HIGH Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). The calculations performed by mbedtls_mpi_exp_mod are not limited; thus, supplying overly large parameters could lead to denial of service when generating Diffie-Hellman key pairs.

Learn more about our Web Application Penetration Testing UK.