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[GHSA-574f-3g2m-x479] Bouncy Castle for Java GOST 28147 CTR mode reuses keystream after 255 blocks - #8524

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simon-reisinger-dynatrace-GHSA-574f-3g2m-x479
Sep 24, 2026
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simon-reisinger-dynatrace-GHSA-574f-3g2m-x479

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Updates

  • Affected products
  • CVSS v4
  • Severity

Comments
Re-adding bcprov-jdk15on as proposed here. This is the legacy, unmaintained predecessor to bcprov-jdk15to18 and bcprov-jdk18on that was split into those two artifacts. As of now, Maven Central has no published 1.84 version for this package (see repo1.maven.org/maven2/org/bouncycastle/bcprov-jdk15on), so no fix version can be set.

Also had to patch the CVSS vector as it was malformed.

Copilot AI review requested due to automatic review settings July 7, 2026 07:54
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github-actions Bot changed the base branch from main to simon-reisinger-dynatrace/advisory-improvement-8524 July 7, 2026 07:55

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Pull request overview

Updates the GHSA-574f-3g2m-x479 advisory metadata to reflect revised affected packages and scoring/severity information for the Bouncy Castle GOST 28147 CTR keystream-reuse issue.

Changes:

  • Updates the CVSS v4 vector and downgrades database_specific.severity from CRITICAL to HIGH.
  • Re-adds bcprov-jdk15on to the affected packages list.
  • Bumps the advisory modified timestamp.

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{
"package": {
"ecosystem": "Maven",
"name": "bcprov-jdk15on"

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Whoever has push rights, yes, this commit suggestion should be applied.

Comment on lines +453 to +462
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "1.59"
}
]
}
]

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Maven Central does not yet list a published 1.84 version for this package. See repo1.maven.org/maven2/org/bouncycastle/bcprov-jdk15on. Therefore, we can't be sure whether a future 1.84 version would fix the vulnerability.

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👋 This pull request has been marked as stale because it has been open with no activity. You can: comment on the issue or remove the stale label to hold stale off for a while, add the Keep label to hold stale off permanently, or do nothing. If you do nothing this pull request will be closed eventually by the stale bot. Please see CONTRIBUTING.md for more policy details.

@github-actions github-actions Bot added the Stale label Sep 22, 2026
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advisory-database Bot merged commit ef35f70 into simon-reisinger-dynatrace/advisory-improvement-8524 Sep 24, 2026
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Hi @simon-reisinger-dynatrace! Thank you so much for contributing to the GitHub Advisory Database. This database is free, open, and accessible to all, and it's people like you who make it great. Thanks for choosing to help others. We hope you send in more contributions in the future!

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advisory-database Bot deleted the simon-reisinger-dynatrace-GHSA-574f-3g2m-x479 branch September 24, 2026 15:18
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