###  CVE-2021-43883

#### Describe

Windows Installer Elevation of Privilege Vulnerability

#### ImpactVersion

| Product             | CPU Architecture | Version | Update | Tested |
| ------------------- | ---------------- | ------- | ------ | ------ |
| Windows 7           | x86/x64          |         | SP1    |        |
| Windows Rt          |                  |         |        |        |
| Windows 8.1         | x86/x64          |         |        |        |
| Windows 10          | x86/x64          |         |        |        |
| Windows 10          | x86/x64          | 1607    |        |        |
| Windows 10          | x86/x64/arm64    | 1809    |        |        |
| Windows 10          | x86/x64/arm64    | 1909    |        |        |
| Windows 10          | x86/x64/arm64    | 2004    |        |        |
| Windows 10          | x86/x64/arm64    | 20H2    |        |        |
| Windows 10          | x86/x64/arm64    | 21H1    |        |        |
| Windows 10          | x86/x64/arm64    | 21H2    |        |        |
| Windows 11          | x64/arm64        |         |        |        |
| Windows Server 2008 | x86/x64          | R2      | SP1    |        |
| Windows Server 2008 | x86/x64          |         | SP2    |        |
| Windows Server 2012 |                  | R2      |        |        |
| Windows Server 2012 |                  |         |        |        |
| Windows Server 2016 |                  |         |        |        |
| Windows Server 2019 |                  |         |        |        |
| Windows Server 2022 |                  |         |        |        |
| Windows Server      |                  | 2004    |        |        |
| Windows Server      |                  | 20H2    |        |        |

#### Patch

```
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43883
```

#### Utilization

The vulnerability does not test, the root directory is stored in the network collection **[CVE number] .zip** EXP or POC, code status unknown

#### ProjectSource

- [klinix5](https://github.com/klinix5/InstallerFileTakeOver)
- [jbaines-r7](https://github.com/jbaines-r7/shakeitoff)

#### Analyse

- https://attackerkb.com/topics/7LstI2clmF/cve-2021-41379/rapid7-analysis



