Home/CVE/Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be
CVE

CVE-2023-6209

Relative URLs starting with three slashes were incorrectly parsed, and a path-traversal "/../" part in the path could be

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.

MEDIUM · CVSS 6.5 EPSS 0.00378
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules1 YARA rules0
⬡

Weakness Classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
▤

Affected Products & Versions

4
mozilla firefox< 120.0
mozilla firefox esr< 115.5.0
mozilla thunderbird< 115.5
debian linuxall versions
◈

Sigma Hunt Rules

1
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSQLite Firefox Profile Data DB Access
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · security@mozilla.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD21 Nov 2023 · 03:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
⚑

Vendor Advisories

30
suse-csafopenSUSE-SU-2024:14572-1
suse-csafopenSUSE-SU-2024:13459-1
suse-csafopenSUSE-SU-2024:13468-1
suse-csafSUSE-SU-2023:4928-1
suse-csafSUSE-SU-2023:4929-1
🔗

References & Sources

7
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
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
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