vulnerability
MFSA2023-31 Firefox: Security Vulnerabilities fixed in Firefox ESR 115.1 (CVE-2023-4052)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:L/Au:S/C:N/I:C/A:N) | Aug 1, 2023 | Aug 2, 2023 | Aug 11, 2025 |
Severity
7
CVSS
(AV:N/AC:L/Au:S/C:N/I:C/A:N)
Published
Aug 1, 2023
Added
Aug 2, 2023
Modified
Aug 11, 2025
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.
Solution
mozilla-firefox-esr-upgrade-115_1
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