CVE-2017-11173
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | 9.0 | affected | |
| debian | bookworm | fixed | 0.4.1-1 |
| debian | bullseye | fixed | 0.4.1-1 |
| debian | forky | fixed | 0.4.1-1 |
| debian | sid | fixed | 0.4.1-1 |
| debian | trixie | fixed | 0.4.1-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| rack-cors_project | rack-cors | {"endExcluding":"0.4.1"} | 0.4.1 |
References
- https://github.com/cyu/rack-cors/issues/86
- http://seclists.org/fulldisclosure/2017/Jul/22
- http://www.debian.org/security/2017/dsa-3931
- https://github.com/cyu/rack-cors/commit/42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6
- https://packetstormsecurity.com/files/143345/rack-cors-Missing-Anchor.html
- https://nvd.nist.gov/vuln/detail/CVE-2017-11173
- https://github.com/cyu/rack-cors
- https://security-tracker.debian.org/tracker/CVE-2017-11173
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.