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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.
Metrics
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OR
*cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:* versions up to (excluding) 2.7.18
*cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:* versions from (including) 2.8.0 up to (excluding) 2.16.9
*cpe:2.3:a:arm:mbed_tls:*:*:*:*:*:*:*:* versions from (including) 2.17.0 up to (excluding) 2.25.0
Added
CVSS V2
NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P)
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Added
CWE
NIST CWE-131
Changed
Reference Type
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9 No Types Assigned
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9 Release Notes, Third Party Advisory
Changed
Reference Type
https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0 No Types Assigned
https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0 Release Notes, Third Party Advisory
Changed
Reference Type
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18 No Types Assigned
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18 Release Notes, Third Party Advisory
Quick Info
CVE Dictionary Entry: CVE-2020-36475 NVD
Published Date: 08/22/2021 NVD
Last Modified: 01/11/2023
Source: MITRE