AIKIDO-2026-398185
bcpkix-jdk15to18 is vulnerable to Uncontrolled Resource Consumption
53
CVE Score
Medium
Uncontrolled Resource Consumption
TL;DR
The PKCS#8 and PBES2 input decryptor builders take key-derivation cost parameters from the encrypted private-key material being parsed. These Key Derivation Function (KDF) cost values are not capped, so a crafted encrypted PKCS#8 key can declare an arbitrarily expensive derivation. Decrypting such input drives the key-derivation function through an excessive amount of work, leading to Denial of Service. The fix bounds the accepted KDF cost so oversized parameters are rejected.
How do I fix this?
Upgrade the org.bouncycastle:bcpkix-jdk15to18 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 your application decrypts PKCS#8 or PBES2-encrypted private keys supplied from untrusted sources.
Package
Versions
0.0.1 - 1.84
Fixed in 1.85Background info
bcpkix-jdk15to18 is vulnerable to Uncontrolled Resource Consumption in versions 0.0.1 - 1.84.
Links
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