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CVE-2023-4052

Date: August 1, 2023

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.

Language: C++

Severity Score

Related Resources (6)

https://bugzilla.mozilla.org/show_bug.cgi?id=1824420
https://www.mozilla.org/security/advisories/mfsa2023-29/
https://www.mozilla.org/security/advisories/mfsa2023-31/
https://www.mozilla.org/security/advisories/mfsa2023-33/
https://nvd.nist.gov/vuln/detail/CVE-2023-4052
https://www.mend.io/vulnerability-database/CVE-2023-4052

Severity Score

Weakness Type (CWE)

Link Following

CWE-59

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

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