AIKIDO-2026-817610
bcpkix-jdk18on is vulnerable to Uncontrolled Resource Consumption
69
CVE Score
Medium
Uncontrolled Resource Consumption
TL;DR
The CRMF/CMP password-based MAC builder in the org.bouncycastle.cert.crmf package honours the iteration count declared in incoming protected messages without an upper bound. Processing a crafted CMP message with a very large password-based MAC iteration count forces excessive key-derivation work. Before the fix, untrusted CMP input can drive uncontrolled CPU consumption. The fix bounds the accepted iteration count.
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 CRMF or CMP messages protected with password-based MAC from untrusted sources.
Package
Versions
0.0.1 - 1.84
Fixed in 1.85Background info
bcpkix-jdk18on is vulnerable to Uncontrolled Resource Consumption in versions 0.0.1 - 1.84.
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