Vulnerability Description
Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems in web sites. This vulnerability affects Firefox < 120, Firefox ESR < 115.5.0, and Thunderbird < 115.5.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 120.0 |
| Mozilla | Firefox Esr | < 115.5.0 |
| Mozilla | Thunderbird | < 115.5 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1858570Issue TrackingPermissions Required
- https://lists.debian.org/debian-lts-announce/2023/11/msg00017.htmlMailing List
- https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
- https://www.debian.org/security/2023/dsa-5561Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-49/Release NotesVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-50/Release NotesVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-52/Release NotesVendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1858570Issue TrackingPermissions Required
- https://lists.debian.org/debian-lts-announce/2023/11/msg00017.htmlMailing List
- https://lists.debian.org/debian-lts-announce/2023/11/msg00030.html
- https://www.debian.org/security/2023/dsa-5561Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-49/Release NotesVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-50/Release NotesVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-52/Release NotesVendor Advisory
FAQ
What is CVE-2023-6209?
CVE-2023-6209 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be used to override the specified host. This could contribute to security problems...
How severe is CVE-2023-6209?
CVE-2023-6209 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-6209?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Debian Debian Linux.