fkie_cve-2024-5102
Vulnerability from fkie_nvd
Published
2024-06-10 17:16
Modified
2024-11-21 09:46
Severity ?
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A sym-linked file accessed via the repair function in Avast Antivirus <24.2 on Windows may allow user to elevate privilege to delete arbitrary files or run processes as NT AUTHORITY\SYSTEM. The vulnerability exists within the "Repair" (settings -> troubleshooting -> repair) feature, which attempts to delete a file in the current user's AppData directory as NT AUTHORITY\SYSTEM. A low-privileged user can make a pseudo-symlink and a junction folder and point to a file on the system. This can provide a low-privileged user an Elevation of Privilege to win a race-condition which will re-create the system files and make Windows callback to a specially-crafted file which could be used to launch a privileged shell instance. This issue affects Avast Antivirus prior to 24.2.
References
security@nortonlifelock.comhttps://support.norton.com/sp/static/external/tools/security-advisories.htmlNot Applicable
af854a3a-2127-422b-91ae-364da2661108https://support.norton.com/sp/static/external/tools/security-advisories.htmlNot Applicable
Impacted products
Vendor Product Version
avast antivirus *
microsoft windows -


To clipboard 

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      "value": "A sym-linked file accessed via the repair function in Avast Antivirus \u003c24.2 on Windows may allow user to elevate privilege to delete arbitrary files or run processes as NT AUTHORITY\\SYSTEM.\u00a0The vulnerability exists within the \"Repair\" (settings -\u003e troubleshooting -\u003e repair) feature, which attempts to delete a file in the current user\u0027s AppData directory as NT AUTHORITY\\SYSTEM. A\u00a0low-privileged user can make a pseudo-symlink and a junction folder and point to a file on the system. This can provide a low-privileged user an Elevation of Privilege to win a race-condition which will re-create the system files and make Windows callback to a specially-crafted file which could be used to launch a privileged shell instance.\n\nThis issue affects Avast Antivirus prior to 24.2."
    },
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      "value": "Un archivo con enlace simb\u00f3lico al que se accede a trav\u00e9s de la funci\u00f3n de reparaci\u00f3n en Avast Antivirus \u0026lt;24.2 en Windows puede permitir al usuario elevar privilegios para eliminar archivos arbitrarios o ejecutar procesos como NT AUTHORITY\\SYSTEM. La vulnerabilidad existe dentro de la funci\u00f3n \"Reparaci\u00f3n\" (configuraci\u00f3n -\u0026gt; soluci\u00f3n de problemas -\u0026gt; reparaci\u00f3n), que intenta eliminar un archivo en el directorio AppData del usuario actual como NT AUTHORITY\\SYSTEM. Un usuario con pocos privilegios puede crear un pseudoenlace simb\u00f3lico y una carpeta de uni\u00f3n y apuntar a un archivo en el sistema. Esto puede proporcionar a un usuario con pocos privilegios una elevaci\u00f3n de permisos para ganar una condici\u00f3n de ejecuci\u00f3n que recrear\u00e1 los archivos del sistema y realizar\u00e1 una devoluci\u00f3n de llamada de Windows a un archivo especialmente manipulado que podr\u00eda usarse para iniciar una instancia de shell privilegiada. Este problema afecta a Avast Antivirus antes de la versi\u00f3n 24.2."
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  "id": "CVE-2024-5102",
  "lastModified": "2024-11-21T09:46:58.337",
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          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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}


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