CVE-2023-4581
XLL file extensions were downloadable without warnings
At a glance
- Severity
- Not available
- EPSS
- EPSS 0.57 % · percentile 47 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- mozilla
- NVD status
- Modified
Description
Excel `.xll` add-in files did not have a blocklist entry in Firefox's executable blocklist which allowed them to be downloaded without any warning of their potential harm. This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Thunderbird < 102.15, and Thunderbird < 115.2.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2023-54435
- GCVE · GCVE-0-2023-4581
CERT-FR advisories
- CERTFR-2023-AVI-0703 — Multiples vulnérabilités dans Thunderbird · cert.ssi.gouv.fr
- CERTFR-2023-AVI-0695 — Multiples vulnérabilités dans les produits Mozilla · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*< 117.0cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*≥ 115.0 < 115.2cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*< 102.15cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*< 115.2
Affected products
| Product | Versions |
|---|---|
| Mozilla · Firefox | affected unspecified < 117 |
| Mozilla · Firefox ESR | affected unspecified < 102.15 |
| Mozilla · Firefox ESR | affected unspecified < 115.2 |
| Mozilla · Thunderbird | affected unspecified < 102.15 |
| Mozilla · Thunderbird | affected unspecified < 115.2 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1843758
- https://www.mozilla.org/security/advisories/mfsa2023-34/
- https://www.mozilla.org/security/advisories/mfsa2023-35/
- https://www.mozilla.org/security/advisories/mfsa2023-36/
- https://www.mozilla.org/security/advisories/mfsa2023-37/
- https://www.mozilla.org/security/advisories/mfsa2023-38/
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |