CVE-2023-4052
This could be combined with creation of a junction (a form of symbolic link) to allow arbitrary file deletion controlled by the non-privileged user. *This bug only affects Firefox on Windows.
Does this matter?
Lower severity and a low EPSS score (0.70%). Track it; it rarely justifies an emergency change on its own.
Description
The Firefox updater created a directory writable by non-privileged users. When uninstalling Firefox, any files in that directory would be recursively deleted with the permissions of the uninstalling user account. This could be combined with creation of a junction (a form of symbolic link) to allow arbitrary file deletion controlled by the non-privileged user. *This bug only affects Firefox on Windows. Other operating systems are unaffected.* This vulnerability affects Firefox < 116, Firefox ESR < 115.1, and Thunderbird < 115.1.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 0.70% probability · 51th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-59
- Affected
- mozilla/firefox · mozilla/firefox esr
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1824420Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2023-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-31/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-33/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1824420Issue Tracking, Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2023-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-31/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-33/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.