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GitHubjohanneslks/cve-2025-14558

CVE-2025-14558

FreeBSD rtsold DNSSL Command Injection (RCE)

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13125 months agoNot yet reviewed
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CVE-2025-14558

FreeBSD rtsold DNSSL Command Injection (RCE)

Description

rtsold(8) does not validate DNSSL domain names for shell metacharacters before passing them to resolvconf(8). Command substitution via $() enables remote code execution from an adjacent network.

Affected: FreeBSD 13.x, 14.x, 15.x before 2025-12-16

Usage

root@kitploit:~
sudo python3 exploit.py -i eth0                      # touch /tmp/pwned
sudo python3 exploit.py -i eth0 -p 'id > /tmp/out'   # custom command

Requirements

  • Layer 2 adjacency to target
  • Target: rtsold with ACCEPT_RTADV enabled
  • Attacker: root, Python 3, Scapy

References

Download Tool
  • https://security.FreeBSD.org/advisories/FreeBSD-SA-25:12.rtsold.asc
  • https://www.exploit-db.com/exploits/52463

Legal Notice

This project is released under the GNU GPLv3.

It is provided for defensive security research, education, and authorized testing. Do not use this code against systems or services without explicit permission from the owner.

Unauthorized use may violate applicable law. The authors do not grant permission to test third-party systems and are not responsible for misuse.

See the LICENSE file for warranty and liability terms.

Credits: Kevin Day