AIKIDO-2026-943399
bcpkix-jdk18on is vulnerable to Improper Validation of Integrity Check Value
87
CVE Score
High
Improper Validation of Integrity Check Value
TL;DR
When CMS AuthenticatedData carries authenticated attributes, the MAC is verified over the attributes but the protected content itself is not bound to the MAC. This lets the content be replaced while the MAC still validates successfully. Before the fix, the integrity of authenticated content is not guaranteed when authenticated attributes are present. The fix binds the content to the MAC verification.
How do I fix this?
Upgrade the org.bouncycastle:bcpkix-jdk18on library to the patch version.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you process CMS AuthenticatedData messages with authenticated attributes from untrusted sources.
Package
Versions
0.0.1 - 1.84
Fixed in 1.85Background info
bcpkix-jdk18on is vulnerable to Improper Validation of Integrity Check Value in versions 0.0.1 - 1.84.
Links
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