Unrated severityNVD Advisory· Published Jan 20, 2021· Updated Aug 4, 2024
CVE-2020-20949
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.
Affected products
2- STM32/cryptographic firmware library software expansion for STM32Cubedescription
Patches
Vulnerability mechanics
References
5- archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdfmitrex_refsource_MISC
- st.commitrex_refsource_MISC
- x-cube-cryptolib.commitrex_refsource_MISC
- bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bbmitrex_refsource_MISC
- www.st.com/en/embedded-software/x-cube-cryptolib.htmlmitrex_refsource_MISC
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