Description
CRLF injection vulnerability in actionpack/lib/action_controller/response.rb in Ruby on Rails 2.3.x before 2.3.13 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the Content-Type header.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rails | 2.3.14 | — |
| Debian 13 | rails | 2.3.14 | — |
| Debian 12 | rails | 2.3.14 | — |
| Debian 6.0 | rails | 2.3.5-1.2+squeeze1 | DSA-2301-1 |
| Debian 5.0 | rails | 2.1.0-7+lenny1 | DSA-2301-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| RubyGems | actionpack | >= 2.3.0, < 2.3.13 | 2.3.13 | GHSA-fcqf-h4h4-695m |
Advisories 1
- DSA-2301-1 rails - several Debian Security (DSA / DLA) · Mar 9, 2026
References
- [oss-security] 20110817 CVE request: ruby on rails flaws (4) mailing-list
- [oss-security] 20110822 Re: CVE request: ruby on rails flaws (4) mailing-list
- https://bugzilla.redhat.com/show_bug.cgi?id=732156
- FEDORA-2011-11567 vendor-advisory
- [oss-security] 20110819 Re: CVE request: ruby on rails flaws (4) mailing-list
- DSA-2301 vendor-advisory
- 45921 third-party-advisory
- [oss-security] 20110820 Re: CVE request: ruby on rails flaws (4) mailing-list
- [oss-security] 20110822 Re: CVE request: ruby on rails flaws (4) mailing-list
- [oss-security] 20110822 Re: CVE request: ruby on rails flaws (4) mailing-list
- https://github.com/rails/rails/commit/11dafeaa7533be26441a63618be93a03869c83a9
- [rubyonrails-security] 20110816 Response Splitting Vulnerability in Ruby on Rails mailing-list