gsd-2021-40556
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A stack overflow vulnerability exists in the httpd service in ASUS RT-AX56U Router Version 3.0.0.4.386.44266. This vulnerability is caused by the strcat function called by "caupload" input handle function allowing the user to enter 0xFFFF bytes into the stack. This vulnerability allows an attacker to execute commands remotely. The vulnerability requires authentication.
Aliases
Aliases
CVE-2021-40556


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-40556",
    "id": "GSD-2021-40556"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-40556"
      ],
      "details": "A stack overflow vulnerability exists in the httpd service in ASUS RT-AX56U Router Version 3.0.0.4.386.44266. This vulnerability is caused by the strcat function called by \"caupload\" input handle function allowing the user to enter 0xFFFF bytes into the stack. This vulnerability allows an attacker to execute commands remotely. The vulnerability requires authentication.",
      "id": "GSD-2021-40556",
      "modified": "2023-12-13T01:23:25.597354Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
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        "ID": "CVE-2021-40556",
        "STATE": "PUBLIC"
      },
      "affects": {
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          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
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                          "version_value": "n/a"
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          }
        ]
      },
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      "references": {
        "reference_data": [
          {
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            "refsource": "MISC",
            "url": "https://x1ng.top/2021/10/14/ASUS%E6%A0%88%E6%BA%A2%E5%87%BA%E6%BC%8F%E6%B4%9E%E5%88%86%E6%9E%90/"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
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        "nodes": [
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            "children": [
              {
                "children": [],
                "cpe_match": [
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                    "cpe23Uri": "cpe:2.3:o:asus:rt-ax56u_firmware:3.0.0.4.386.44266:*:*:*:*:*:*:*",
                    "cpe_name": [],
                    "vulnerable": true
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                "operator": "OR"
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        "description": {
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            }
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        "problemtype": {
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                {
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                  "value": "CWE-787"
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        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.asus.com/tw/Networking-IoT-Servers/WiFi-Routers/ASUS-WiFi-Routers/RT-AX56U/HelpDesk_BIOS/",
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              "tags": [
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              "url": "https://www.asus.com/tw/Networking-IoT-Servers/WiFi-Routers/ASUS-WiFi-Routers/RT-AX56U/HelpDesk_BIOS/"
            },
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              "url": "https://x1ng.top/2021/10/14/ASUS%E6%A0%88%E6%BA%A2%E5%87%BA%E6%BC%8F%E6%B4%9E%E5%88%86%E6%9E%90/"
            }
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        }
      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2022-10-07T17:39Z",
      "publishedDate": "2022-10-06T18:15Z"
    }
  }
}


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