Privilege Escalation

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Apache Conf Privilege Escalation

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Buffer Overflow Privilege Escalation

Chrome Remote Debugger Pentesting

Doas Privilege Escalation

Ghidra Debug Mode RCE

Gnuplot Privilege Escalation

LXC/LXD (Linux Container/Daemon) Privilege Escalation

Linux Privilege Escalation

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Pip Download Code Execution

PolKit Privilege Escalation

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Sudo Path Traversal Privilege Escalation

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Sudo Privilege Escalation by Overriding Shared Library

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Sudo Screen Privilege Escalation

Sudo Service Privilege Escalation

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Sudo Systemctl Privilege Escalation

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Sudo Wget Privilege Escalation

Sudoedit Privilege Escalation

Tar Wildcard Injection PrivEsc

Update-Motd Privilege Escalation

irb (Interactive Ruby Shell) Privilege Escalation

Post Exploitation

Cover Your Tracks in Linux

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Add & Delete Groups in Linux

Add & Delete Users in Linux

File & Directory Ownership in Linux

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Shell Scripting

Apache Conf Privilege Escalation

Last modified: 2023-03-07

Privilege Escalation Web

Investigation

ls -al /etc/apache2

-rwxrwxrwx  1 root root  7094 NOV 7  2023 apache2.conf

If we can modify the apache configuration file, we can update the web owner (www-data) to arbitrary user.

Exploitation

1. Update Apache.Conf

First modify “apache.conf” file to change the web user with new one.

# These need to be set in /etc/apache2/envvars
User www-data
Group www-data

2. Insert Reverse Shell Script

In the web directory (e.g. /var/www/html), create the script to reverse shell.
Assume the website uses PHP, so we can create “shell.php” in the web root and insert PHP reverse shell script.

3. Restart Apache Server

4. Get a Shell

We need to start a listener in local terminal.

nc -lvnp 1234

Then access to the web page e.g. https://example.com/shell.php.

We should get a shell as the desired user.

Privilege Escalation

Post Exploitation

Backup

Container

Archive

Attack

Protocol

Management

Apache Conf Privilege Escalation

Investigation

Exploitation

1. Update Apache.Conf

2. Insert Reverse Shell Script

3. Restart Apache Server

4. Get a Shell

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