Use of a Broken or Risky Cryptographic Algorithm Affecting bouncycastle package, versions *


Severity

Recommended
low

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.26% (16th percentile)

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  • Snyk IDSNYK-RHEL10-BOUNCYCASTLE-17611883
  • published27 Jun 2026
  • disclosed1 Jan 2018

Introduced: 1 Jan 2018

CVE-2018-5382  (opens in a new tab)
CWE-327  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:10 bouncycastle.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bouncycastle package and not the bouncycastle package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

The default BKS keystore use an HMAC that is only 16 bits long, which can allow an attacker to compromise the integrity of a BKS keystore. Bouncy Castle release 1.47 changes the BKS format to a format which uses a 160 bit HMAC instead. This applies to any BKS keystore generated prior to BC 1.47. For situations where people need to create the files for legacy reasons a specific keystore type "BKS-V1" was introduced in 1.49. It should be noted that the use of "BKS-V1" is discouraged by the library authors and should only be used where it is otherwise safe to do so, as in where the use of a 16 bit checksum for the file integrity check is not going to cause a security issue in itself.

CVSS Base Scores

version 3.1