Vulnerability CVE-2021-27396
Published: 2021-05-12

Description:
A vulnerability has been identified in Tecnomatix Plant Simulation (All versions < V16.0.5). The PlantSimCore.dll library lacks proper validation of user-supplied data when parsing SPP files. This could result in a stack based buffer overflow, a different vulnerability than CVE-2021-27398. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-13279)

Type:

CWE-121

 (Stack-based Buffer Overflow)

CVSS2 => (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.8/10
6.4/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Siemens -> Tecnomatix plant simulation 

 References:
https://cert-portal.siemens.com/productcert/pdf/ssa-983548.pdf
https://www.zerodayinitiative.com/advisories/ZDI-21-568/
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