high7.5
CVE-2020-36478
An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS).
Impact
An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Arm | Mbed Tls | before 2.7.18 from 2.8.0 before 2.16.9 from 2.17.0 before 2.25.0 |
| Siemens | Logo\! Cmr2020 Firmware | before 2.2 |
| Siemens | Logo\! Cmr2040 Firmware | before 2.2 |
| Siemens | Simatic Rtu3031c Firmware | All versions |
| Siemens | Simatic Rtu3041c Firmware | All versions |
| Siemens | Simatic Rtu3030c Firmware | All versions |
| Siemens | Simatic Rtu3000c Firmware | All versions |
| Debian | Debian Linux | Versions 9.0, 10.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf
- https://github.com/ARMmbed/mbedtls/issues/3629
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18
- https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-756638.pdf
- https://github.com/ARMmbed/mbedtls/issues/3629
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.9
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.25.0
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.18
- https://lists.debian.org/debian-lts-announce/2021/11/msg00021.html
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html