Vulnerability Description
Improved Host header checks to reject requests not sent to a well-known local hostname or IP, or the server-specified hostname.
CVSS Score
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Geckodriver | < 0.30.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1652612Issue TrackingPermissions RequiredThird Party Advisory
- https://github.com/mozilla/geckodriver/releases/tag/v0.30.0Release NotesThird Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1652612Issue TrackingPermissions RequiredThird Party Advisory
- https://github.com/mozilla/geckodriver/releases/tag/v0.30.0Release NotesThird Party Advisory
FAQ
What is CVE-2021-4138?
CVE-2021-4138 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Improved Host header checks to reject requests not sent to a well-known local hostname or IP, or the server-specified hostname.
How severe is CVE-2021-4138?
CVE-2021-4138 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-4138?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Geckodriver.