Advisory Details

August 10th, 2020

Advantech WebAccess/HMI Designer PM3 File Parsing Type Confusion Remote Code Execution Vulnerability

ZDI-20-954
ZDI-CAN-10139

CVE ID CVE-2020-16229
CVSS SCORE 7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Advantech
AFFECTED PRODUCTS WebAccess/HMI Designer
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Advantech WebAccess/HMI Designer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the parsing of PM3 files. The issue results from the lack of proper validation of user-supplied data, which can result in a type confusion condition. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Advantech has issued an update to correct this vulnerability. More details can be found at:
https://us-cert.cisa.gov/ics/advisories/icsa-20-219-02
DISCLOSURE TIMELINE
  • 2020-02-18 - Vulnerability reported to vendor
  • 2020-08-10 - Coordinated public release of advisory
CREDIT kimiya
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