QID 591174

Date Published: 2022-11-24

QID 591174: Siemens SIMATIC PCS 7, Step 7, Starter Incorrect Permission Assignment Vulnerability (SSA-661034)

AFFECTED PRODUCTS
The following Siemens products are affected:
SIMATIC PCS 7 V8.2 and earlier All versions
SIMATIC STEP 7 V5.X All versions prior to V5.7
SINAMICS STARTER (containing STEP 7 OEM version) All versions prior to V5.4 SP2 HF1

QID Detection Logic (Authenticated):
QID checks for the Vulnerable version of Siemens using registry "HKLM\SOFTWARE\Siemens"

Successful exploitation of this vulnerability could allow an attacker to change the content of certain metafiles and subsequently manipulate the parameters or behavior of devices configured by the affected software products.

  • CVSS V3 rated as Critical - 8.8 severity.
  • CVSS V2 rated as High - 7.2 severity.
    • Solution

    Customers are advised to refer to CERT MITIGATIONS section SSA-661034 for affected packages and patching details.Workaround:
    The vendor has advised restricting access to the engineering station to trusted users only.

    Vendor References

    CVEs related to QID 591174

    CVE-2021-31894 |
    Software Advisories
    Advisory ID Software Component Link
    SSA-661034 URL Logo cert-portal.siemens.com/productcert/html/ssa-661034.html
    By selecting these links, you may be leaving CVEreport webspace. We have provided these links to other websites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other websites that are more appropriate for your purpose. CVEreport does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, CVEreport does not endorse any commercial products that may be mentioned on these sites. Please address comments about any linked pages to [email protected].