Advisory Details

January 22nd, 2021

Delta Industrial Automation TPEditor TPE File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-21-081
ZDI-CAN-11757

CVE ID CVE-2020-27284
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 TPEditor
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Delta Industrial Automation TPEditor. 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 TPE files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. 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-21-021-02
DISCLOSURE TIMELINE
  • 2020-09-02 - Vulnerability reported to vendor
  • 2021-01-22 - Coordinated public release of advisory
CREDIT kimiya
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