Vulnerability Details : CVE-2023-4052
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.
Products affected by CVE-2023-4052
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-4052
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 44 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-4052
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2023-4052
-
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.Assigned by: nvd@nist.gov (Primary)
References for CVE-2023-4052
-
https://www.mozilla.org/security/advisories/mfsa2023-33/
Security Vulnerabilities fixed in Thunderbird 115.1 — Mozilla
-
https://www.mozilla.org/security/advisories/mfsa2023-29/
Security Vulnerabilities fixed in Firefox 116 — MozillaVendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1824420
Access DeniedIssue Tracking;Permissions Required
-
https://www.mozilla.org/security/advisories/mfsa2023-31/
Security Vulnerabilities fixed in Firefox ESR 115.1 — MozillaVendor Advisory
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