CVE-2020-36475
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Arm Mbed Tls
PublishedAug 23, 2021
First seenAug 23, 2021
How to fix
Update
- arm mbed_tls2.7.18, 2.16.9, 2.25.0 or later
- siemens logo\!_cmr2020_firmware2.2 or later
- siemens logo\!_cmr2040_firmware2.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| arm mbed_tls | v < 2.7.18, 2.8.0 ≤ v < 2.16.9, 2.17.0 ≤ v < 2.25.0 | 2.7.18, 2.16.9, 2.25.0 |
| siemens logo\!_cmr2020_firmware | v < 2.2 | 2.2 |
| siemens logo\!_cmr2040_firmware | v < 2.2 | 2.2 |
| siemens simatic_rtu3031c_firmware | No range specified | — |
| siemens simatic_rtu3041c_firmware | No range specified | — |
| siemens simatic_rtu3030c_firmware | No range specified | — |
| siemens simatic_rtu3000c_firmware | No range specified | — |
| debian debian_linux | 9.0, 10.0 | — |
Check your version
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