CVE-2020-20949

Description

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.

References

https://www.st.com/en/embedded-software/x-cube-cryptolib.html

https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bb

http://st.com

http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3