Advisory Details

June 10th, 2021

Schneider Electric IGSS WSP File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability

ZDI-21-673
ZDI-CAN-12773

CVE ID CVE-2021-22752
CVSS SCORE 7.8, (AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
AFFECTED VENDORS Schneider Electric
AFFECTED PRODUCTS IGSS
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Schneider Electric IGSS. 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 WSP 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 Schneider Electric has issued an update to correct this vulnerability. More details can be found at:
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-04
DISCLOSURE TIMELINE
  • 2021-04-14 - Vulnerability reported to vendor
  • 2021-06-10 - Coordinated public release of advisory
CREDIT kimiya
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