Description
Ratpack versions before 1.6.1 generate a session ID using a cryptographically weak PRNG in the JDK's ThreadLocalRandom. This means that if an attacker can determine a small window for the server start time and obtain a session ID value, they can theoretically determine the sequence of session IDs.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | io.ratpack:ratpack-groovy | < 1.6.1 | 1.6.1 | GHSA-54mg-vgrp-mwx9 |
| Maven | io.ratpack:ratpack-java | < 1.6.1 | 1.6.1 | GHSA-54mg-vgrp-mwx9 |
| Maven | io.ratpack:ratpack-session | < 1.6.1 | 1.6.1 | GHSA-54mg-vgrp-mwx9 |