Advisory Details

November 1st, 2019

Advantech WISE-PaaS/RMM RecoveryMgmt groupFuzzSearch XML External Entity Processing Information Disclosure Vulnerability

ZDI-19-943
ZDI-CAN-9231

CVE ID CVE-2019-18227
CVSS SCORE 7.5, (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
AFFECTED VENDORS Advantech
AFFECTED PRODUCTS WISE-PaaS/RMM
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Advantech WISE-PasS/RMM. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the RecoveryMgmt class. Due to the improper restriction of XML External Entity (XXE) references, a specially crafted document specifying a URI causes the XML parser to access the URI and embed the contents back into the XML document for further processing. An attacker can leverage this vulnerability to disclose information 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 trendytofu of Trend Micro Zero Day Initiative
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