CVE-2024-26146
Vulnerability Summary
Timeline
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 Metrics
- v3.1•MEDIUM•Score: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS Trends
Current EPSS score: 2.00%• Percentile: 80%
Techniques & Countermeasures
- CWE-1333•Inefficient Regular Expression Complexity
The product uses a regular expression with a worst-case computational complexity that is inefficient and possibly exponential.
Affected Systems
- chainguard•kube-fluentd-operator
< 1.18.2-r3
- chainguard•kube-fluentd-operator-compat
< 1.18.2-r3
- chainguard•kube-fluentd-operator-default-config
< 1.18.2-r3
- chainguard•kube-fluentd-operator-oci-entrypoint
< 1.18.2-r3
- chainguard•ruby3.2-rack
< 3.0.9.1-r0
- chainguard•ruby3.2-rack-2.2
< 2.2.8.1-r0
- wolfi•kube-fluentd-operator
< 1.18.2-r3
- wolfi•kube-fluentd-operator-compat
< 1.18.2-r3
- wolfi•kube-fluentd-operator-default-config
< 1.18.2-r3
- wolfi•kube-fluentd-operator-oci-entrypoint
< 1.18.2-r3
- wolfi•ruby3.2-rack
< 3.0.9.1-r0
- wolfi•ruby3.2-rack-2.2
< 2.2.8.1-r0
- debian•ruby-rack
< 2.1.4-3+deb11u2 | < 2.2.6.4-1+deb12u1 | < 2.2.7-1.1 | < 2.2.7-1.1
- debian•debian_linux
10.0
- rack•rack
≥ 3.0.0, < 3.0.9.1 | < 2.0.9.4 | ≥ 0.4, < 2.0.9.4 | ≥ 2.1.0, < 2.1.4.4 | ≥ 2.2.0, < 2.2.8.1
References (12)
- https://github.com/rack/rack/security/advisories/GHSA-54rr-7fvw-6x8f
- https://github.com/rack/rack/commit/30b8e39a578b25d4bdcc082c1c52c6f164b59716
- https://github.com/rack/rack/commit/6c5d90bdcec0949f7ba06db62fb740dab394b582
- https://github.com/rack/rack/commit/a227cd793778c7c3a827d32808058571569cda6f
- https://github.com/rack/rack/commit/e4c117749ba24a66f8ec5a08eddf68deeb425ccd
- https://discuss.rubyonrails.org/t/possible-denial-of-service-vulnerability-in-rack-header-parsing/84942
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-26146.yml
- https://lists.debian.org/debian-lts-announce/2024/04/msg00022.html
- https://security.netapp.com/advisory/ntap-20240510-0006/
- https://security-tracker.debian.org/tracker/CVE-2024-26146
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26146.json
- https://nvd.nist.gov/vuln/detail/CVE-2024-26146