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5.9
CVSSv3

CVE-2020-20949

Published: 20/01/2021 Updated: 21/07/2021
CVSS v2 Base Score: 4.3 | Impact Score: 2.9 | Exploitability Score: 8.6
CVSS v3 Base Score: 5.9 | Impact Score: 3.6 | Exploitability Score: 2.2
VMScore: 383
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N
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Vulnerability Summary

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.

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ietf public key cryptography standards \\#1 1.5

References

CWE-327https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bbhttp://st.comhttp://x-cube-cryptolib.comhttps://www.st.com/en/embedded-software/x-cube-cryptolib.htmlhttp://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdfhttps://nvd.nist.gov
CVSSv3
CVSSv2
CVSSv3
VMScore
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