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Insecure Randomness Affecting io.ratpack:ratpack-session package, versions [,1.6.1)

0.0
medium

Snyk CVSS

    Attack Complexity Low

    Threat Intelligence

    EPSS 0.1% (41st percentile)
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NVD
3.7 low

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  • Snyk ID SNYK-JAVA-IORATPACK-174598
  • published 7 May 2019
  • disclosed 7 May 2019
  • credit Unknown
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Introduced: 7 May 2019

CVE-2019-11808 Open this link in a new tab
CWE-331 Open this link in a new tab

How to fix?

Upgrade io.ratpack:ratpack-session to version 1.6.1 or higher.

Overview

io.ratpack:ratpack-session is a that allows supports for HTTP sessions within Ratpack applications.

Affected versions of this package are vulnerable to Insecure Randomness. Session IDs are generated using a weak PRNG within the ThreadLocalRandom class. An attacker could abuse this vulnerability to determine a small window for the server start time and obtain a session ID value. This vulnerability could be abused to theoretically determine the sequence of session IDs.