Advisory Details

May 13th, 2021

Siemens Tecnomatix Plant Simulation SPP File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

CVE ID	CVE-2021-27398
CVSS SCORE	7.8, AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Siemens
AFFECTED PRODUCTS	Tecnomatix Plant Simulation
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on affected installations of Siemens Tecnomatix Plant Simulation. 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 SPP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.
ADDITIONAL DETAILS	https://us-cert.cisa.gov/ics/advisories/icsa-21-131-08 https://cert-portal.siemens.com/productcert/pdf/ssa-983548.pdf
DISCLOSURE TIMELINE	2021-03-10 - Vulnerability reported to vendor 2021-05-13 - Coordinated public release of advisory
CREDIT	Francis Provencher {PRL}

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