VAR-201801-1871

Vulnerability from variot - Updated: 2022-05-17 02:02

This vulnerability allows attackers on the local network to create a denial-of-service condition on the Belkin Wemo Link and Smart Plug device, despite factory resets. Authentication is not required to exploit this vulnerability. The specific flaw exists within the handling of XML parsing in the UPNP service. When parsing changeFriendlyName requests, the process does not properly validate the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to trigger an infinite reboot loop and deny service to users of the device.

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            "accessComplexity": "LOW",
            "accessVector": "ADJACENT_NETWORK",
            "authentication": "NONE",
            "author": "ZDI",
            "availabilityImpact": "COMPLETE",
            "baseScore": 6.1,
            "confidentialityImpact": "NONE",
            "exploitabilityScore": 6.5,
            "id": "ZDI-18-134",
            "impactScore": 6.9,
            "integrityImpact": "NONE",
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            "severity": "MEDIUM",
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    "data": "This vulnerability allows attackers on the local network to create a denial-of-service condition on the Belkin Wemo Link and Smart Plug device, despite factory resets. Authentication is not required to exploit this vulnerability.  The specific flaw exists within the handling of XML parsing in the UPNP service. When parsing changeFriendlyName requests, the process does not properly validate the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to trigger an infinite reboot loop and deny service to users of the device.",
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  "id": "VAR-201801-1871",
  "iot": {
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      {
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  "last_update_date": "2022-05-17T02:02:25.106000Z",
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  "sources_release_date": {
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  },
  "title": {
    "_id": null,
    "data": "(0Day) Belkin Wemo Link and Smart Plug UPNP changeFriendlyName Buffer Overflow Denial of Service Vulnerability",
    "sources": [
      {
        "db": "ZDI",
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}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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