Description
In Legion of the Bouncy Castle BC before 1.61 and BC-FJA before 1.0.1.2, attackers can obtain sensitive information about a private exponent because of Observable Differences in Behavior to Error Inputs. This occurs in org.bouncycastle.crypto.encodings.OAEPEncoding. Sending invalid ciphertext that decrypts to a short payload in the OAEP Decoder could result in the throwing of an early exception, potentially leaking some information about the private exponent of the RSA private key performing the encryption.
Remediation
References
https://github.com/bcgit/bc-java/wiki/CVE-2020-26939
https://lists.apache.org/thread.html/r8c36ba34e80e05eecb1f80071cc834d705616f315b634ec0c7d8f42e%40%3Cissues.solr.apache.org%3E
Related Vulnerabilities
CVE-2020-15138 Vulnerability in npm package prismjs
CVE-2016-10544 Vulnerability in npm package uws
CVE-2017-7657 Vulnerability in maven package org.eclipse.jetty:jetty-client
CVE-2017-12621 Vulnerability in maven package commons-jelly:commons-jelly
CVE-2018-14718 Vulnerability in maven package com.fasterxml.jackson.core:jackson-databind