medium5.9
CVE-2020-20949
Bleichenbacher's attack on PKCS #1 v1.5 padding for RSA in STM32 cryptographic firmware library software expansion for STM32Cube (UM1924).
Impact
Bleichenbacher's attack on PKCS #1 v1.5 padding for RSA in STM32 cryptographic firmware library software expansion for STM32Cube (UM1924). The vulnerability can allow one to use Bleichenbacher's oracle attack to decrypt an encrypted ciphertext by making successive queries to the server using the vulnerable library, resulting in remote information disclosure.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| St | Stm32cubef0 | All versions |
| St | Stm32cubef1 | All versions |
| St | Stm32cubef2 | All versions |
| St | Stm32cubef3 | All versions |
| St | Stm32cubef4 | All versions |
| St | Stm32cubef7 | All versions |
| St | Stm32cubeg0 | All versions |
| St | Stm32cubeg4 | All versions |
| St | Stm32cubeh7 | All versions |
| St | Stm32cubeide | All versions |
| St | Stm32cubel0 | All versions |
| St | Stm32cubel1 | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf
- https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb
- https://www.st.com/en/embedded-software/x-cube-cryptolib.html
- http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf
- https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb
- https://www.st.com/en/embedded-software/x-cube-cryptolib.html