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Observable Discrepancy Affecting org.bouncycastle:bcprov-jdk18on package, versions [,1.78)

0.0
medium

Snyk CVSS

    Attack Complexity High
    Confidentiality High

    Threat Intelligence

    Exploit Maturity Proof of concept

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  • Snyk ID SNYK-JAVA-ORGBOUNCYCASTLE-6613076
  • published 14 Apr 2024
  • disclosed 11 Apr 2024
  • credit Hubert Kario
Report a new vulnerability Found a mistake?

Introduced: 11 Apr 2024

New CVE-2024-30171 Open this link in a new tab
CWE-203 Open this link in a new tab

How to fix?

Upgrade org.bouncycastle:bcprov-jdk18on to version 1.78 or higher.

Overview

Affected versions of this package are vulnerable to Observable Discrepancy due to the timing difference between exceptions thrown when processing RSA key exchange handshakes, AKA Marvin.

Note: The implemented fix mitigates the leakage of data via the PKCS#1 interface, but does not fully alleviate the side-channel as it allows cases in which the padding check fails but the handshake succeeds.