CVE-2019-17513 — An issue was discovered in Ratpack before 1
An issue was discovered in Ratpack before 1.7.5. Due to a misuse of the Netty library class DefaultHttpHeaders, there is no validation that headers lack HTTP control characters. Thus, if untrusted data is used to construct HTTP headers with Ratpack, HTTP Response Splitting can oc
Published
2019-10-18T02:36:25.000Z
Last modified
2024-08-05T01:40:15.853Z
01What is this vulnerability?
An issue was discovered in Ratpack before 1.7.5. Due to a misuse of the Netty library class DefaultHttpHeaders, there is no validation that headers lack HTTP control characters. Thus, if untrusted data is used to construct HTTP headers with Ratpack, HTTP Response Splitting can occur.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2019-10-18T02:36:25.000Z
- Last modified: 2024-08-05T01:40:15.853Z
09References
- github.com — https://github.com/ratpack/ratpack/commit/efb910d38a96494256f36675ef0e5061097dd7…
- github.com — https://github.com/ratpack/ratpack/commit/c560a8d10cb8bdd7a526c1ca2e67c8f224ca23…
- ratpack.io — https://ratpack.io/versions/1.7.5
- github.com — https://github.com/ratpack/ratpack/security/advisories/GHSA-mvqp-q37c-wf9j
- github.com — https://github.com/ratpack/ratpack/releases/tag/v1.7.5
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