GHSA-22f2-v57c-j9cx
Rack vulnerable to ReDoS in content type parsing (2nd degree polynomial)
At a glance
- Published
- Updated
- CVE
- CVE-2024-25126
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Description
### Summary ```ruby module Rack class MediaType SPLIT_PATTERN = %r{\s*[;,]\s*} ``` The above regexp is subject to ReDos. 50K blank characters as a prefix to the header will take over 10s to split. ### PoC A simple HTTP request with lots of blank characters in the content-type header: ```ruby request["Content-Type"] = (" " * 50_000) + "a," ``` ### Impact It's a very easy to craft ReDoS. Like all ReDoS the impact is debatable.
Affected packages
| Package | Versions |
|---|---|
| RubyGems · rack | introduced 3.0.0, fixed 3.0.9.1 |
| RubyGems · rack | introduced 0.4, fixed 2.2.8.1 |
References
- https://github.com/rack/rack/security/advisories/GHSA-22f2-v57c-j9cx WEB
- https://nvd.nist.gov/vuln/detail/CVE-2024-25126 ADVISORY
- https://github.com/rack/rack/commit/6efb2ceea003c4b195815a614e00438cbd543462 WEB
- https://github.com/rack/rack/commit/d9c163a443b8cadf4711d84bd2c58cb9ef89cf49 WEB
- https://discuss.rubyonrails.org/t/denial-of-service-vulnerability-in-rack-content-type-parsing/84941 WEB
- https://github.com/rack/rack PACKAGE
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-25126.yml WEB
- https://lists.debian.org/debian-lts-announce/2024/04/msg00022.html WEB
- https://security.netapp.com/advisory/ntap-20240510-0005 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |