CVEvulnerability

CVE-2020-36475

7.5 HIGH Published 2021-08-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-08-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-131

Description

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.

Affected configurations

• arm mbed tls (< 2.7.18) • arm mbed tls (>= 2.8.0 < 2.16.9) • arm mbed tls (>= 2.17.0 < 2.25.0) • siemens logo\! cmr2020 firmware (< 2.2) • siemens logo\! cmr2040 firmware (< 2.2) • siemens simatic rtu3031c firmware • siemens simatic rtu3041c firmware • siemens simatic rtu3030c firmware • siemens simatic rtu3000c firmware • debian debian linux 9.0 • debian debian linux 10.0

Related

Weakness · CWE (1)

  • CWE-131 Incorrect Calculation of Buffer Size weakness

References