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How the CVE Works:
The vulnerability (CVE-2025-XXXX) in HashiCorp Vagrant (β€ v2.4.6) stems from insecure handling of the default synced folder (/vagrant or C:\vagrant). An attacker with guest VM access can inject malicious Ruby code into the shared Vagrantfile. When the host user executes any `vagrant` command, the infected `Vagrantfile` is parsed as a Ruby script, executing the payload on the host system with the userβs privileges. This bypasses VM isolation, enabling guest-to-host code execution. The risk escalates in multi-tenant environments where guest VM compromise is plausible.
DailyCVE Form:
Platform: HashiCorp Vagrant
Version: β€ 2.4.6
Vulnerability: Guest-to-host code injection
Severity: Moderate
Date: 2025-07-02
Prediction: Patch by 2025-07-30
What Undercode Say:
Check Vagrant version: vagrant --version Example malicious Vagrantfile injection (guest VM): echo '<code>touch /tmp/pwned</code>' >> /vagrant/Vagrantfile
How Exploit:
1. Gain shell access to guest VM.
2. Append Ruby backdoor to shared `Vagrantfile`.
- Wait for host user to run
vagrant up/halt.
Protection from this CVE:
- Disable default synced folders (
config.vm.synced_folder ".", "/vagrant", disabled: true). - Use read-only mounts (
readonly: true). - Upgrade to patched version post-release.
Impact:
- Host system compromise via VM escape.
- Privilege escalation if host user is admin.
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
