CVE-2020-7585: A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versi...

Summary

A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). A DLL ...

What to do

Update siemens simatic_step_7 to version 5.6 or later.
Update siemens sinamics_starter to version 5.4 or later.

Affected software

Vendor	Product	Affected versions
siemens	simatic_pcs_7	All versions `cpe:2.3:a:siemens:simatic_pcs_7::::::::`
siemens	simatic_process_device_manager	All versions `cpe:2.3:a:siemens:simatic_process_device_manager::::::::`
siemens	simatic_step_7	< 5.6 5.6 `cpe:2.3:a:siemens:simatic_step_7::::::::`
siemens	sinamics_starter	< 5.4 5.4 `cpe:2.3:a:siemens:sinamics_starter::::::::`

Original advisory text

A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versi...

A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). A DLL Hijacking vulnerability could allow a local attacker to execute code with elevated privileges. The security vulnerability could be exploited by an attacker with local access to the affected systems. Successful exploitation requires user privileges but no user interaction. The vulnerability could allow an attacker to compromise the availability of the system as well as to have access to confidential information.

References

https://cert-portal.siemens.com/productcert/pdf/ssa-689942.pdf Vendor Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-20-161-05
https://www.us-cert.gov/ics/advisories/icsa-20-161-05 Third Party Advisory US Government Resource