Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in Ratpack

2019-05-1404:01:37

Google

osv.dev

0.001 Low

EPSS

Percentile

49.5%

JSON

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.

CPENameOperatorVersion
io.ratpack:ratpack-sessioneq0.9.1
io.ratpack:ratpack-groovyeq1.3.2
io.ratpack:ratpack-sessioneq0.9.11
io.ratpack:ratpack-sessioneq1.5.2
io.ratpack:ratpack-groovyeq1.4.0-rc-2
io.ratpack:ratpack-groovyeq1.2.0-rc-2
io.ratpack:ratpack-sessioneq0.9.17
io.ratpack:ratpack-sessioneq0.9.15
io.ratpack:ratpack-sessioneq1.3.1
io.ratpack:ratpack-sessioneq1.5.1

Name	Operator	Version
io.ratpack:ratpack-session	eq	0.9.1
io.ratpack:ratpack-groovy	eq	1.3.2
io.ratpack:ratpack-session	eq	0.9.11
io.ratpack:ratpack-session	eq	1.5.2
io.ratpack:ratpack-groovy	eq	1.4.0-rc-2
io.ratpack:ratpack-groovy	eq	1.2.0-rc-2
io.ratpack:ratpack-session	eq	0.9.17
io.ratpack:ratpack-session	eq	0.9.15
io.ratpack:ratpack-session	eq	1.3.1
io.ratpack:ratpack-session	eq	1.5.1