cve/2023/CVE-2023-29532.md

### [CVE-2023-29532](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-29532)
![](https://img.shields.io/static/v1?label=Product&message=Firefox%20ESR&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Firefox&color=blue)
![](https://img.shields.io/static/v1?label=Product&message=Thunderbird&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%3C%20102.10%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Version&message=unspecified%3C%20112%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Mozilla%20Maintenance%20Service%20Write-lock%20bypass&color=brighgreen)

### Description

A local attacker can trick the Mozilla Maintenance Service into applying an unsigned update file by pointing the service at an update file on a malicious SMB server. The update file can be replaced after the signature check, before the use, because the write-lock requested by the service does not work on a SMB server.*Note: This attack requires local system access and only affects Windows. Other operating systems are not affected.* This vulnerability affects Firefox < 112, Firefox ESR < 102.10, and Thunderbird < 102.10.

### POC

#### Reference
- https://bugzilla.mozilla.org/show_bug.cgi?id=1806394

#### Github
No PoCs found on GitHub currently.