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Rewterz Threat Advisory – ICS: Multiple Siemens Solid Edge Vulnerabilities

Severity

High

Analysis Summary

CVE-2021-37178

An XML external entity injection vulnerability in the underlying XML parser could cause the affected application to disclose arbitrary files to remote attackers by loading a specially crafted XML file.

CVE-2021-37179

The PSKERNEL.DLL library in the affected application lacks proper validation while parsing user-supplied OBJ files that could lead to a use-after-free condition. An attacker could leverage this vulnerability to execute code in the context of the current process.

CVE-2021-37180

The PSKERNEL.DLL library lacks proper validation while parsing user supplied OBJ files that could cause an out-of-bounds access to an uninitialized pointer. An attacker could leverage this vulnerability to execute code in the context of the current process.

Impact

  • Code Execution
  • Data Exfiltration

Affected Vendors

Siemens

Affected Products

  • Solid Edge SE2021: All versions prior to SE2021MP7

Remediation

Refer to CISA advisory for the complete list of affected products and their respective patches at

https://us-cert.cisa.gov/ics/advisories/icsa-21-222-05