Vulnerability · Published Jun 29, 2021 · Assigned by GitHub_M
CVE-2021-29481Client side sessions should not allow unencrypted storage
Medium 6.5
In plain English
A medium-severity security flaw in ratpack from ratpack. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Maven | io.ratpack:ratpack-session | 1.9.0 | GHSA-phj8-4cq3-794g |
Affected products (as reported)
Weakness: CWE-312 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
References
- https://github.com/ratpack/ratpack/security/advisories/GHSA-phj8-4cq3-794g x_refsource_CONFIRM
- https://github.com/ratpack/ratpack/pull/1590 x_refsource_MISC