Vulnerability in Ratpack
CVE-2021-29481
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (37.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 37.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Ratpack — versions < 1.9.0
- Ratpack Project
Weakness classification (CWE)
References
- github.com/ratpack/ratpack/security/advisories/GHSA-phj8-4cq3-794g (Third Party Advisory)
- github.com/ratpack/ratpack/pull/1590 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-29481?
- CVE-2021-29481 is a medium-severity vulnerability in Ratpack, classified under Cleartext Storage of Sensitive Information. CVSS score: 6.5/10. Published 2021-06-29.
- How severe is CVE-2021-29481?
- Medium severity. CVSS v3 base score is 6.5 out of 10.