Advisory Details

November 1st, 2019

Advantech WISE-PaaS/RMM UpgradeMgmt upload_ota Directory Traversal Remote Code Execution Vulnerability

ZDI-19-950
ZDI-CAN-9173

CVE ID CVE-2019-13551
CVSS SCORE 8.8, (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Advantech
AFFECTED PRODUCTS WISE-PaaS/RMM
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WISE-PasS/RMM. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed.

The specific flaw exists within the UpgradeMgmt class. When parsing the frmUpdateSetting_UploadFileFullName parameter, the process does not properly validate a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

ADDITIONAL DETAILS Advantech has issued an update to correct this vulnerability. More details can be found at:
https://www.us-cert.gov/ics/advisories/icsa-19-304-01
DISCLOSURE TIMELINE
  • 2019-08-20 - Vulnerability reported to vendor
  • 2019-11-01 - Coordinated public release of advisory
CREDIT rgod of 9sg
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