Insecure Randomness Affecting io.ratpack:ratpack-session Open this link in a new tab package, versions [,1.6.1)
Attack Complexity
Low
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snyk-id
SNYK-JAVA-IORATPACK-174598
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published
7 May 2019
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disclosed
7 May 2019
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credit
Unknown
Introduced: 7 May 2019
CVE-2019-11808 Open this link in a new tabHow 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.