CVE-2021-29481

Client side sessions should not allow unencrypted storage

Description

Ratpack is a toolkit for creating web applications. In versions prior to 1.9.0, the default configuration of client side sessions results in unencrypted, but signed, data being set as cookie values. This means that if something sensitive goes into the session, it could be read by something with access to the cookies. For this to be a vulnerability, some kind of sensitive data would need to be stored in the session and the session cookie would have to leak. For example, the cookies are not configured with httpOnly and an adjacent XSS vulnerability within the site allowed capture of the cookies. As of version 1.9.0, a securely randomly generated signing key is used. As a workaround, one may supply an encryption key, as per the documentation recommendation.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.07%
Third-Party Advisory github.com Third-Party Advisory github.com
Affected: ratpack ratpack
Published at:
Updated at:

References

Link Tags
https://github.com/ratpack/ratpack/security/advisories/GHSA-phj8-4cq3-794g third party advisory
https://github.com/ratpack/ratpack/pull/1590 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-29481?
CVE-2021-29481 has been scored as a medium severity vulnerability.
How to fix CVE-2021-29481?
To fix CVE-2021-29481, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-29481 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-29481 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-29481?
CVE-2021-29481 affects ratpack ratpack.
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