CVE-2021-29480

Use of Insufficiently Random Values in maven/io.ratpack/ratpack-core

Identifier

CVE-2021-29480

Package Slug

maven/io.ratpack/ratpack-core

Vulnerability

Use of Insufficiently Random Values

Description

Ratpack is a toolkit for creating web applications., the client side session module uses the application startup time as the signing key by default. This means that if an attacker can determine this time, and if encryption is not also used (which is recommended, but is not on by default), the session data could be tampered with by someone with the ability to write cookies. The default configuration is unsuitable for production use as an application restart renders all sessions invalid and is not multi-host compatible, but its use is not actively prevented. As of Ratpack, the default value is a securely randomly generated value, generated at application startup time. As a workaround, supply an alternative signing key, as per the documentation's recommendation.

Affected Versions

All versions before 1.9.0

Solution

Upgrade to version 1.9.0 or above.

Last Modified

2021-07-12

source