Resource exhaustion in Rack
CVE-2024-26141
Rack is a modular Ruby web server interface. Carefully crafted Range headers can cause a server to respond with an unexpectedly large response. Responding with such large responses could lead to a denial of service issue. Vulnerable applications will use the `Rack::File` middleware or the `Rack::Utils.byte_ranges` methods (this includes Rails applications). The vulnerability is fixed in 3.0.9.1 and 2.2.8.1.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.016 (75.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 75.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Rack — versions >= 3.0.0, < 3.0.9.1, >= 1.3.0, < 2.2.8.1
- Debian Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/rack/rack/security/advisories/GHSA-xj5v-6v4g-jfw6 (Exploit, Vendor Advisory)
- github.com/rack/rack/commit/4849132bef471adb21131980df745f4bb84de2d9 (Patch)
- github.com/rack/rack/commit/62457686b26d33a15a254c7768c2076e8e02b48b (Patch)
- discuss.rubyonrails.org/t/possible-dos-vulnerability-with-range-header-in-rack/… (Exploit, Vendor Advisory)
- github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2024-26141.yml (Exploit, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2024/04/msg00022.html (Mailing List)
- security.netapp.com/advisory/ntap-20240510-0007/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2024-26141?
- CVE-2024-26141 is a medium-severity vulnerability in Rack, classified under Uncontrolled Resource Consumption. CVSS score: 5.8/10. Published 2024-02-29.
- How severe is CVE-2024-26141?
- Medium severity. CVSS v3 base score is 5.8 out of 10.
- Is CVE-2024-26141 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.