Vulnerability in Rack-Cors Project
CVE-2017-11173
Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests. If the configuration were intended to allow only the trusted example.com domain name and not the malicious example.net domain name, then example.com.example.net (as well as example.com-example.net) would be inadvertently allowed.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.023 (83.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Rack-Cors Project
- Debian Linux — versions 9.0
References
- seclists.org/fulldisclosure/2017/Jul/22 (Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/143345/rack-cors-Missing-Anchor.html (VDB Entry, Third Party Advisory)
- github.com/cyu/rack-cors/commit/42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6 (Patch, Third Party Advisory)
- www.debian.org/security/2017/dsa-3931 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-11173?
- CVE-2017-11173 is a high-severity vulnerability in Rack-Cors Project. CVSS score: 8.8/10. Published 2017-07-13.
- How severe is CVE-2017-11173?
- High severity. CVSS v3 base score is 8.8 out of 10.