CVE-2021-29481 – io.ratpack:ratpack-session

Package

Manager: maven
Name: io.ratpack:ratpack-session
Vulnerable Version: >=0 <1.9.0

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

EPSS: 0.00072 pctl0.22412

Details

Unencrypted storage of client side sessions ### Impact 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. Note: the documentation does point this out and encourage users to add an encryption key, but it is not mandatory. 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. The proposed change is to change the default behaviour to use a randomly generated encryption key. This would mean that sessions do not survive app restarts, but this is already the behaviour given the random signing key. ### Patches As of version 1.9.0, a securely randomly generated signing key is used. ### Workarounds Supply an encryption key, as per the documentation recommendation. ### References - https://github.com/ratpack/ratpack/pull/1590

Metadata

Created: 2021-07-01T17:02:13Z
Modified: 2021-09-01T19:32:49Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/07/GHSA-phj8-4cq3-794g/GHSA-phj8-4cq3-794g.json
CWE IDs: ["CWE-312"]
Alternative ID: GHSA-phj8-4cq3-794g
Finding: F020
Auto approve: 1