Vulnerability · Published Aug 1, 2023 · Assigned by mozilla
CVE-2023-4052
Medium 6.5
In plain English
A medium-severity security flaw in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox-esr | 115.1.0-r0 | ALPINE-CVE-2023-4052 |
| Alpine:v3.21 | firefox-esr | 115.1.0-r0 | ALPINE-CVE-2023-4052 |
| Alpine:v3.22 | firefox-esr | 115.1.0-r0 | ALPINE-CVE-2023-4052 |
| Alpine:v3.23 | firefox-esr | 115.1.0-r0 | ALPINE-CVE-2023-4052 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-4052 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-4052 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2023-4052 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2023-4052 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | unspecified – before 116 |
| Mozilla | Firefox ESR | unspecified – before 115.1 |
| Mozilla | Thunderbird | unspecified – before 115.1 |