PT-2023-4186 · Mozilla+2 · Firefox Esr+4
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Published
2023-08-01
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Updated
2024-12-12
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CVE-2023-4052
CVSS v3.1
6.5
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 116
Firefox ESR versions prior to 115.1
Thunderbird versions prior to 115.1
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, and other operating systems are unaffected.
Recommendations
For Firefox versions prior to 116, update to version 116 or later to resolve the issue.
For Firefox ESR versions prior to 115.1, update to version 115.1 or later to resolve the issue.
For Thunderbird versions prior to 115.1, update to version 115.1 or later to resolve the issue.
As a temporary workaround, consider restricting access to the directory created by the Firefox updater to minimize the risk of exploitation.
Fix
Link Following
Incorrect Default Permissions
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Related Identifiers
Affected Products
Alt Linux
Firefox
Firefox Esr
Suse
Thunderbird