Vulnerability Monitor

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CVE-2020-36475

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.

Published

2021-08-23T02:15:06.930

Last Modified

2024-11-21T05:29:37.603

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-131
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application arm mbed_tls < 2.7.18 Yes
Application arm mbed_tls < 2.16.9 Yes
Application arm mbed_tls < 2.25.0 Yes
Operating System siemens logo\!_cmr2020_firmware < 2.2 Yes
Hardware siemens logo\!_cmr2020 - No
Operating System siemens logo\!_cmr2040_firmware < 2.2 Yes
Hardware siemens logo\!_cmr2040 - No
Operating System siemens simatic_rtu3031c_firmware * Yes
Hardware siemens simatic_rtu3031c - No
Operating System siemens simatic_rtu3041c_firmware * Yes
Hardware siemens simatic_rtu3041c - No
Operating System siemens simatic_rtu3030c_firmware * Yes
Hardware siemens simatic_rtu3030c - No
Operating System siemens simatic_rtu3000c_firmware * Yes
Hardware siemens simatic_rtu3000c - No
Operating System debian debian_linux 9.0 Yes
Operating System debian debian_linux 10.0 Yes
References