CVE & CISA-KEV Catalog

CVE-2019-10943

HIGH
7.5
CVSS v3
NVD

Description

A vulnerability has been identified in SIMATIC Drive Controller family (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V20.8), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions >= V20.8), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.4.0), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions >= V4.4.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.8.1), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.8.1), SIMATIC S7-1500 Software Controller (All versions < V20.8), SIMATIC S7-1500 Software Controller (All versions >= V20.8), SIMATIC S7-PLCSIM Advanced (All versions < V3.0), SIMATIC S7-PLCSIM Advanced (All versions >= V3.0). An attacker with network access to port 102/tcp could potentially modify the user program on the PLC in a way that the running code is different from the source code which is stored on the device. An attacker must have network access to affected devices and must be able to perform changes to the user program. The vulnerability could impact the perceived integrity of the user program stored on the CPU. An engineer that tries to obtain the code of the user program running on the device, can receive different source code that is not actually running on the device.

CWE-353CWE-345

How to fix

Remediation Available
simatic et 200sp open controller cpu 1515sp pc2 firmwareNVD
Affected:< 20.8Fixed in:20.8CVE-2019-10943derived from NVD
simatic s7-1200 cpu 1211c firmwareNVD
Affected:< 4.4Fixed in:4.4CVE-2019-10943derived from NVD
simatic s7-1200 cpu 1212c firmwareNVD
Affected:< 4.4Fixed in:4.4CVE-2019-10943derived from NVD
simatic s7-1200 cpu 1214c firmwareNVD
Affected:< 4.4Fixed in:4.4CVE-2019-10943derived from NVD
simatic s7-1200 cpu 1215c firmwareNVD
Affected:< 4.4Fixed in:4.4CVE-2019-10943derived from NVD
simatic s7-1200 cpu 1217c firmwareNVD
Affected:< 4.4Fixed in:4.4CVE-2019-10943derived from NVD
simatic s7-1500 cpu 1511c firmwareNVD
Affected:< 2.8.1Fixed in:2.8.1CVE-2019-10943derived from NVD
simatic s7-1500 cpu 1512c firmwareNVD
Affected:< 2.8.1Fixed in:2.8.1CVE-2019-10943derived from NVD
simatic s7-1500 cpu 1518 firmwareNVD
Affected:< 2.8.1Fixed in:2.8.1CVE-2019-10943derived from NVD
simatic s7-1500 software controllerNVD
Affected:< 20.8Fixed in:20.8CVE-2019-10943derived from NVD
simatic s7 plcsim advancedNVD
Affected:< 3.0Fixed in:3.0CVE-2019-10943derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploit Intelligence

0.95%probability of exploitation in 30 days
57thpercentile

Moderate risk: more likely to be exploited than 57% of all known CVEs.

References

Vendor Advisory1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.