GSD-2020-35710

Vulnerability from gsd - Updated: 2023-12-13 01:22
Details
Parallels Remote Application Server (RAS) 18 allows remote attackers to discover an intranet IP address because submission of the login form (even with blank credentials) provides this address to the attacker's client for use as a "host" value. In other words, after an attacker's web browser sent a request to the login form, it would automatically send a second request to a RASHTML5Gateway/socket.io URI with something like "host":"192.168.###.###" in the POST data.
Aliases
Aliases

{
  "GSD": {
    "alias": "CVE-2020-35710",
    "description": "Parallels Remote Application Server (RAS) 18 allows remote attackers to discover an intranet IP address because submission of the login form (even with blank credentials) provides this address to the attacker\u0027s client for use as a \"host\" value. In other words, after an attacker\u0027s web browser sent a request to the login form, it would automatically send a second request to a RASHTML5Gateway/socket.io URI with something like \"host\":\"192.168.###.###\" in the POST data.",
    "id": "GSD-2020-35710"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2020-35710"
      ],
      "details": "Parallels Remote Application Server (RAS) 18 allows remote attackers to discover an intranet IP address because submission of the login form (even with blank credentials) provides this address to the attacker\u0027s client for use as a \"host\" value. In other words, after an attacker\u0027s web browser sent a request to the login form, it would automatically send a second request to a RASHTML5Gateway/socket.io URI with something like \"host\":\"192.168.###.###\" in the POST data.",
      "id": "GSD-2020-35710",
      "modified": "2023-12-13T01:22:00.774188Z",
      "schema_version": "1.4.0"
    }
  },
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      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2020-35710",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "n/a",
                    "version": {
                      "version_data": [
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                          "version_value": "n/a"
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            "value": "Parallels Remote Application Server (RAS) 18 allows remote attackers to discover an intranet IP address because submission of the login form (even with blank credentials) provides this address to the attacker\u0027s client for use as a \"host\" value. In other words, after an attacker\u0027s web browser sent a request to the login form, it would automatically send a second request to a RASHTML5Gateway/socket.io URI with something like \"host\":\"192.168.###.###\" in the POST data."
          }
        ]
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        "reference_data": [
          {
            "name": "https://www.elladodelmal.com/2020/12/blue-team-red-team-como-parallels-ras.html",
            "refsource": "MISC",
            "url": "https://www.elladodelmal.com/2020/12/blue-team-red-team-como-parallels-ras.html"
          },
          {
            "name": "https://twitter.com/amadapa/status/1342407005110218753",
            "refsource": "MISC",
            "url": "https://twitter.com/amadapa/status/1342407005110218753"
          }
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    "nvd.nist.gov": {
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        "nodes": [
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            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:parallels:remote_application_server:18.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
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          "ID": "CVE-2020-35710"
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        "description": {
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              "value": "Parallels Remote Application Server (RAS) 18 allows remote attackers to discover an intranet IP address because submission of the login form (even with blank credentials) provides this address to the attacker\u0027s client for use as a \"host\" value. In other words, after an attacker\u0027s web browser sent a request to the login form, it would automatically send a second request to a RASHTML5Gateway/socket.io URI with something like \"host\":\"192.168.###.###\" in the POST data."
            }
          ]
        },
        "problemtype": {
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            {
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              "tags": [
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 1.4
        }
      },
      "lastModifiedDate": "2020-12-30T16:00Z",
      "publishedDate": "2020-12-25T19:15Z"
    }
  }
}


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