CVE-2025-31974

#!/bin/bash # PoC for CVE-2025-31974: Root File System Not Mounted as Read-Only # This script checks if the root filesystem is writable. # Check mount options for root (/) MOUNT_OPTS=$(findmnt -n -o OPTIONS /) # Check if 'ro' (read-only) is absent in options if [[ "$MOUNT_OPTS" != *"ro"* ]]; then echo "[+] Vulnerability Confirmed: Root filesystem is NOT mounted read-only." echo "[+] Current Mount Options: $MOUNT_OPTS" # Attempt to write a test file to verify (requires root privileges) TEST_FILE="/tmp/cve_2025_31974_test.txt" if touch "$TEST_FILE" 2>/dev/null; then echo "[+] Exploitable: Successfully created a file on the root filesystem." rm -f "$TEST_FILE" else echo "[!] Warning: Write test failed (possible permission restrictions), but mount options indicate vulnerability." fi else echo "[-] Safe: Root filesystem is mounted read-only." fi

{"cve": {"id": "CVE-2025-31974", "sourceIdentifier": "[email protected]", "published": "2026-05-06T19:16:35.593", "lastModified": "2026-05-11T13:51:22.940", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "HCL BigFix Service Management (SM) is susceptible to a Root File System Not Mounted as Read-Only. An improperly configured root file system may allow\n\nunintended modifications to critical system components, potentially increasing the risk of system compromise or unauthorized changes."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:L", "baseScore": 3.9, "baseSeverity": "LOW", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 0.5, "impactScore": 3.4}, {"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-1188"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:hcltech:bigfix_service_management:23.0:*:*:*:*:*:*:*", "matchCriteriaId": "4D915AC1-7C2B-497D-9A77-9726954B2282"}]}]}], "references": [{"url": "https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0128144", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}