Advisory Details

January 22nd, 2021

Delta Industrial Automation ISPSoft ISP File Parsing Use-After-Free Remote Code Execution Vulnerability

ZDI-21-079
ZDI-CAN-11489

CVE ID CVE-2020-27280
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 ISPSoft
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Delta Industrial Automation ISPSoft. 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 ISP files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS Delta Industrial Automation has issued an update to correct this vulnerability. More details can be found at:
https://us-cert.cisa.gov/ics/advisories/icsa-21-021-01
DISCLOSURE TIMELINE
  • 2020-08-05 - Vulnerability reported to vendor
  • 2021-01-22 - Coordinated public release of advisory
CREDIT Francis Provencher {PRL}
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