FKIE_CVE-2019-12577

Vulnerability from fkie_nvd - Published: 2019-07-11 20:15 - Updated: 2024-11-21 04:23
Severity ?
7.8 (High) - CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A vulnerability in the London Trust Media Private Internet Access (PIA) VPN Client v82 for macOS could allow an authenticated, local attacker to run arbitrary code with elevated privileges. The macOS binary openvpn_launcher.64 is setuid root. This binary creates /tmp/pia_upscript.sh when executed. Because the file creation mask (umask) is not reset, the umask value is inherited from the calling process. This value can be manipulated to cause the privileged binary to create files with world writable permissions. A local unprivileged user can modify /tmp/pia_upscript.sh during the connect process to execute arbitrary code as the root user.
References
cve@mitre.orghttps://github.com/mirchr/security-research/blob/master/vulnerabilities/PIA/CVE-2019-12577.txtExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/mirchr/security-research/blob/master/vulnerabilities/PIA/CVE-2019-12577.txtExploit, Third Party Advisory
Impacted products
Vendor Product Version
londontrustmedia private_internet_access_vpn_client 82
apple macos -
To clipboard 

{
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    {
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  "descriptions": [
    {
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      "value": "A vulnerability in the London Trust Media Private Internet Access (PIA) VPN Client v82 for macOS could allow an authenticated, local attacker to run arbitrary code with elevated privileges. The macOS binary openvpn_launcher.64 is setuid root. This binary creates /tmp/pia_upscript.sh when executed. Because the file creation mask (umask) is not reset, the umask value is inherited from the calling process. This value can be manipulated to cause the privileged binary to create files with world writable permissions. A local unprivileged user can modify /tmp/pia_upscript.sh during the connect process to execute arbitrary code as the root user."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad en el cliente VPN de Private Internet Access (PIA) de London Trust Media para macOS, podr\u00eda permitir a un atacante local autenticado ejecutar c\u00f3digo arbitrario con privilegios elevados. El binario de macOS openvpn_launcher.64 es root setuid. Este binario crea el archivo /tmp/pia_upscript.sh cuando es ejecutado. Dado que la m\u00e1scara de creaci\u00f3n de archivos (umask) no se restablece, el valor umask se hereda del proceso de llamada. Este valor se puede manipular para causar que el binario con privilegios cree archivos con permisos de escritura mundial. Un usuario local sin privilegios puede modificar el archivo /tmp/pia_upscript.sh durante el proceso de conexi\u00f3n para ejecutar c\u00f3digo arbitrario como el usuario root."
    }
  ],
  "id": "CVE-2019-12577",
  "lastModified": "2024-11-21T04:23:07.610",
  "metrics": {
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        "baseSeverity": "HIGH",
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          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.2,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
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        "exploitabilityScore": 3.9,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
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          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
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          "scope": "UNCHANGED",
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          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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  "published": "2019-07-11T20:15:13.117",
  "references": [
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  "vulnStatus": "Modified",
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          "lang": "en",
          "value": "CWE-732"
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  ]
}


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