Deserialization Vulnerability in SIMATIC STEP 7 Safety Could Lead to Arbitrary Code Execution
CVE-2023-32737

7HIGH

Key Information:

Vendor

Siemens
Status
Simatic Step 7 Safety V18
Vendor
CVE Published:
9 July 2024

What is CVE-2023-32737?

A flaw has been located in SIMATIC STEP 7 Safety V18 versions earlier than V18 Update 2, where the handling of user-controlled input during .NET BinaryFormatter deserialization lacks proper restrictions. This deficiency can enable an attacker to exploit the vulnerability, causing type confusion and potentially leading to execution of arbitrary code within the affected application. Organizations using these versions are advised to evaluate the impact and update to the secure version to mitigate risks.

Affected Version(s)

SIMATIC STEP 7 Safety V18 0

References

https://cert-portal.siemens.com/productcert/html/ssa-3130...

CVSS V4

Score:
7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2023-32737 : Deserialization Vulnerability in SIMATIC STEP 7 Safety Could Lead to Arbitrary Code Execution