| CVE ID | CVE-2019-6550 |
| CVSS SCORE | 9.8, AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| AFFECTED VENDORS |
Advantech |
| AFFECTED PRODUCTS |
WebAccess |
| VULNERABILITY DETAILS |
This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Advantech WebAccess Client. Authentication is not required to exploit this vulnerability. The specific flaw exists within a scanf call in upandpr.exe, which is accessed through the 0x2711 IOCTL in the webvrpcs process. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of Administrator. |
| ADDITIONAL DETAILS |
Advantech has issued an update to correct this vulnerability. More details can be found at:
https://ics-cert.us-cert.gov/advisories/ICSA-19-092-01 |
| DISCLOSURE TIMELINE |
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| CREDIT | Mat Powell of Trend Micro Zero Day Initiative |
