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FKIE_CVE-2023-3181

Vulnerability from fkie_nvd - Published: 2024-01-25 16:15 - Updated: 2026-06-17 06:13
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
The C:\Program Files (x86)\Splashtop\Splashtop Software Updater\uninst.exe process creates a folder at C:\Windows\Temp~nsu.tmp and copies itself to it as Au_.exe. The C:\Windows\Temp~nsu.tmp\Au_.exe file is automatically launched as SYSTEM when the system reboots or when a standard user runs an MSI repair using Splashtop Streamer’s Windows Installer. Since the C:\Windows\Temp~nsu.tmp folder inherits permissions from C:\Windows\Temp and Au_.exe is susceptible to DLL hijacking, standard users can write a malicious DLL to it and elevate their privileges.
References
cve-coordination@google.comhttps://github.com/mandiant/Vulnerability-Disclosures/blob/master/2023/MNDT-2023-0015.mdThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2023/MNDT-2023-0015.mdThird Party Advisory
Impacted products
Vendor Product Version
splashtop mirroring360_receiver *
splashtop mirroring360_sender *
splashtop splashtop *
splashtop splashtop *
splashtop splashtop_for_rmm *
splashtop streamer *
microsoft windows -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Splashtop Software Updater",
          "vendor": "Splashtop",
          "versions": [
            {
              "lessThan": "1.5.6.21",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "cve-coordination@google.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:splashtop:mirroring360_receiver:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6563A7D7-1B53-45F6-889E-5268473A0C1D",
              "versionEndExcluding": "2.4.0.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splashtop:mirroring360_sender:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "3FCC4A5A-FA91-44A6-AEF7-AA7152924290",
              "versionEndExcluding": "1.3.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splashtop:splashtop:*:*:*:*:business:*:*:*",
              "matchCriteriaId": "746D321B-BF0D-48A9-98A0-82A5083902E1",
              "versionEndExcluding": "3.5.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splashtop:splashtop:*:*:*:*:personal:*:*:*",
              "matchCriteriaId": "C45B532F-DE36-4E00-BF68-D03A44428D0B",
              "versionEndExcluding": "3.5.8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splashtop:splashtop_for_rmm:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "444CA138-705C-433C-9D79-2A013D581464",
              "versionEndExcluding": "3.5.8.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:splashtop:streamer:*:*:*:*:-:windows:*:*",
              "matchCriteriaId": "38D5C0BB-40D8-4E05-9C4C-297D2B047B3C",
              "versionEndExcluding": "3.5.6.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA",
              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The C:\\Program Files (x86)\\Splashtop\\Splashtop Software Updater\\uninst.exe process creates a folder at C:\\Windows\\Temp~nsu.tmp and copies itself to it as Au_.exe. The C:\\Windows\\Temp~nsu.tmp\\Au_.exe file is automatically launched as SYSTEM when the system reboots or when a standard user runs an MSI repair using Splashtop Streamer\u2019s Windows Installer. Since the C:\\Windows\\Temp~nsu.tmp folder inherits permissions from C:\\Windows\\Temp and Au_.exe is susceptible to DLL hijacking, standard users can write a malicious DLL to it and elevate their privileges."
    },
    {
      "lang": "es",
      "value": "El proceso C:\\Program Files (x86)\\Splashtop\\Splashtop Software Updater\\uninst.exe crea una carpeta en C:\\Windows\\Temp~nsu.tmp y se copia en ella como Au_.exe. El archivo C:\\Windows\\Temp~nsu.tmp\\Au_.exe se inicia autom\u00e1ticamente como SISTEMA cuando el sistema se reinicia o cuando un usuario est\u00e1ndar ejecuta una reparaci\u00f3n de MSI utilizando el instalador de Windows de Splashtop Streamer. Dado que la carpeta C:\\Windows\\Temp~nsu.tmp hereda permisos de C:\\Windows\\Temp y Au_.exe es susceptible al secuestro de DLL, los usuarios est\u00e1ndar pueden escribirle una DLL maliciosa y elevar sus privilegios."
    }
  ],
  "id": "CVE-2023-3181",
  "lastModified": "2026-06-17T06:13:31.850",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "cve-coordination@google.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-3181",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-06-03T18:21:45.344343Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-01-25T16:15:07.400",
  "references": [
    {
      "source": "cve-coordination@google.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2023/MNDT-2023-0015.md"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2023/MNDT-2023-0015.md"
    }
  ],
  "sourceIdentifier": "cve-coordination@google.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-379"
        }
      ],
      "source": "cve-coordination@google.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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