AIKIDO-2026-319222
bcmls-jdk18on is vulnerable to Uncontrolled Resource Consumption
87
High Risk
This Affects:
bcmls-jdk18onTL;DR
The MLS wire decoder (MLSInputStream) allocates buffers using opaque length fields from the peer before checking those lengths against remaining input. A crafted MLS message can request an enormous allocation and exhaust memory. MLS clients that decode untrusted wire data are exposed to remote denial of service. The fix bounds opaque lengths before allocation.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you decode untrusted MLS wire messages.
Background info
bcmls-jdk18on is vulnerable to Uncontrolled Resource Consumption in versions 1.73.0 - 1.84.0.
How to fix this
Upgrade the org.bouncycastle:bcmls-jdk18on library to the patch version.
Links
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SOC 2Compliant
ISO 27001Compliant