Advisory Details

March 17th, 2020

Delta Industrial Automation CNCSoft ScreenEditor DPB File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-20-309
ZDI-CAN-10413

CVE ID CVE-2020-7002
CVSS SCORE 7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Delta Industrial Automation
AFFECTED PRODUCTS CNCSoft ScreenEditor
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Delta Industrial Automation CNCSoft ScreenEditor. 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 DPB files. 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 Delta Industrial Automation has issued an update to correct this vulnerability. More details can be found at:
https://www.us-cert.gov/ics/advisories/icsa-20-077-01
DISCLOSURE TIMELINE
  • 2020-02-12 - Vulnerability reported to vendor
  • 2020-03-17 - Coordinated public release of advisory
CREDIT kimiya
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