module
Local Privilege Escalation in polkits pkexec
| Disclosed | Created |
|---|---|
| 01/25/2022 | 03/03/2022 |
Disclosed
01/25/2022
Created
03/03/2022
Description
A bug exists in the polkit pkexec binary in how it processes arguments. If
the binary is provided with no arguments, it will continue to process environment
variables as argument variables, but without any security checking.
By using the execve call we can specify a null argument list and populate the
proper environment variables. This exploit is architecture independent.
the binary is provided with no arguments, it will continue to process environment
variables as argument variables, but without any security checking.
By using the execve call we can specify a null argument list and populate the
proper environment variables. This exploit is architecture independent.
Authors
Qualys SecurityAndris RaugulisDhiraj Mishrabwatters-r7
Platform
Linux
References
Module Options
To display the available options, load the module within the Metasploit console and run the commands ‘show options’ or ‘show advanced’:
msf > use exploit/linux/local/cve_2021_4034_pwnkit_lpe_pkexec
msf /(c) > show actions
...actions...
msf /(c) > set ACTION < action-name >
msf /(c) > show options
...show and set options...
msf /(c) > run
NEW
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