CVE-2021-4034 PoC — polkit 缓冲区错误漏洞

Source

https://github.com/ziadsaleemi/polkit_CVE-2021-4034

Associated Vulnerability

Title:polkit 缓冲区错误漏洞 (CVE-2021-4034)
Description:A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.

Description

Ansible role to patch  RHSB-2022-001 Polkit Privilege Escalation - (CVE-2021-4034)

Readme

Role Name
=========

Ansible role to patch  RHSB-2022-001 Polkit Privilege Escalation - (CVE-2021-4034)

Requirements
------------
Repositories should be configured.

Role Variables
--------------

All the variables are in /vars/main.yml file. A list of polkit vulnerable packages is also added to the file as a list, you can update the list depending on your use case. You can also add the flavors of linux and their releases. 

Dependencies
------------

Please make sure the repositories are already configured!!!


Example Playbook
----------------

Download repo in your roles directory:
```
    - hosts: all
      roles:
         - polkit_CVE-2021-4034
```
If you are downloading and using outside your roles directory use absolute path or relative path to execute role:
```
    - hosts: all
      roles:
        - /home/user/some-direcotory/polkit_CVE-2021-4034
```

Structure
------------

```
polkit_CVE-2021-4034/
├── defaults
│   └── main.yml
├── files
├── handlers
│   └── main.yml
├── meta
│   └── main.yml
├── README.md
├── tasks
│   ├── main.yml
│   └── patch.yml
├── templates
├── tests
│   ├── inventory
│   └── test.yml
└── vars
    └── main.yml
```
License
-------

GNU Public License v3.0

Author Information
------------------

Ziad Saleemi

File Snapshot

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