CVE-2020-20950

Bleichenbacher's attack on PKCS #1 v1.5 padding for RSA in Microchip Libraries for Applications 2018-11-26 All up to 2018-11-26. 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.

• CWE-327

• http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdfTechnical Description, Third Party Advisory
• https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bbTechnical Description, Third Party Advisory
• https://www.microchip.com/mplab/microchip-libraries-for-applicationsProduct
• http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdfTechnical Description, Third Party Advisory
• https://bi-zone.medium.com/silence-will-fall-or-how-it-can-take-2-years-to-get-your-vuln-registered-e6134846f5bbTechnical Description, Third Party Advisory
• https://www.microchip.com/mplab/microchip-libraries-for-applicationsProduct

Published

Jan 19, 2021

Last Modified

Jul 9, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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