CVE-2024-26146
Carefully crafted headers can cause header parsing in Rack to take longer than expected resulting in a possible denial of service issue.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.00%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Rack is a modular Ruby web server interface. Carefully crafted headers can cause header parsing in Rack to take longer than expected resulting in a possible denial of service issue. Accept and Forwarded headers are impacted. Ruby 3.2 has mitigations for this problem, so Rack applications using Ruby 3.2 or newer are unaffected. This vulnerability is fixed in 2.0.9.4, 2.1.4.4, 2.2.8.1, and 3.0.9.1.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.00% probability · 80th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1333
- Affected
- rack/rack · debian/debian linux
- Source
- security-advisories@github.com
References
- https://discuss.rubyonrails.org/t/possible-denial-of-service-vulnerability-in-rack-header-parsing/84942Vendor Advisory
- https://github.com/rack/rack/commit/30b8e39a578b25d4bdcc082c1c52c6f164b59716Patch
- https://github.com/rack/rack/commit/6c5d90bdcec0949f7ba06db62fb740dab394b582Patch
- https://github.com/rack/rack/commit/a227cd793778c7c3a827d32808058571569cda6fPatch
- https://github.com/rack/rack/commit/e4c117749ba24a66f8ec5a08eddf68deeb425ccdPatch
- https://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8fVendor Advisory
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-26146.ymlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/04/msg00022.htmlMailing List
- https://security.netapp.com/advisory/ntap-20240510-0006/Third Party Advisory
- https://discuss.rubyonrails.org/t/possible-denial-of-service-vulnerability-in-rack-header-parsing/84942Vendor Advisory
- https://github.com/rack/rack/commit/30b8e39a578b25d4bdcc082c1c52c6f164b59716Patch
- https://github.com/rack/rack/commit/6c5d90bdcec0949f7ba06db62fb740dab394b582Patch
- https://github.com/rack/rack/commit/a227cd793778c7c3a827d32808058571569cda6fPatch
- https://github.com/rack/rack/commit/e4c117749ba24a66f8ec5a08eddf68deeb425ccdPatch
- https://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8fVendor Advisory
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-26146.ymlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2024/04/msg00022.htmlMailing List
- https://security.netapp.com/advisory/ntap-20240510-0006/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.