CVE-2018-16471
Description
There is a possible XSS vulnerability in Rack before 2.0.6 and 1.6.11. Carefully crafted requests can impact the data returned by the `scheme` method on `Rack::Request`. Applications that expect the scheme to be limited to 'http' or 'https' and do not escape the return value could be vulnerable to an XSS attack. Note that applications using the normal escaping mechanisms provided by Rails may not impacted, but applications that bypass the escaping mechanisms, or do not use them may be vulnerable.
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
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1.6.4-6 |
| sid | Fixed | 1.6.4-6 |
| forky | Fixed | 1.6.4-6 |
| bullseye | Fixed | 1.6.4-6 |
| bookworm | Fixed | 1.6.4-6 |
References
- https://groups.google.com/forum/#!topic/ruby-security-ann/NAalCee8n6o
- https://www.suse.com/security/cve/CVE-2018-16471.html
- https://nvd.nist.gov/vuln/detail/CVE-2018-16471
- https://github.com/rack/rack
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2018-16471.yml
- https://groups.google.com/forum/#!topic/rubyonrails-security/GKsAFT924Ag
- https://lists.debian.org/debian-lts-announce/2018/11/msg00022.html
- https://usn.ubuntu.com/4089-1
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00032.html
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00016.html
- https://security-tracker.debian.org/tracker/CVE-2018-16471
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.