ID CVE-2019-10943
Summary A vulnerability has been identified in 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 <= 20.8), SIMATIC ET200SP (incl. SIPLUS variants) Open Controller CPU 1515SP PC (All versions), SIMATIC ET200SP (incl. SIPLUS variants) Open Controller CPU 1515SP PC2 (All versions), SIMATIC S7 PLCSIM Advanced (All versions <= V3.0), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions <= V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants), excluding CPU 1518 MFP (and related SIPLUS variant) (All versions <= V2.8.1), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants), excluding CPU 1518-4 PN/DP and CPU 1518 MFP (and related SIPLUS variant) (All versions <= V2.8.1), SIMATIC S7-1500 Software Controller (All versions <= V20.8). 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. No public exploitation of the vulnerability was known at the time of advisory publication.
References
Vulnerable Configurations
  • cpe:2.3:o:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc2_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc2:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_et_200sp_open_controller_cpu_1515sp_pc2:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_s7-1200_cpu_1211c_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_s7-1200_cpu_1211c_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_s7-1200_cpu_1211c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_s7-1200_cpu_1211c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_s7-1200_cpu_1212c_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_s7-1200_cpu_1212c_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_s7-1200_cpu_1212c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_s7-1200_cpu_1212c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_s7-1200_cpu_1214c_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_s7-1200_cpu_1214c_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_s7-1200_cpu_1214c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_s7-1200_cpu_1214c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_s7-1200_cpu_1215c_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_s7-1200_cpu_1215c_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_s7-1200_cpu_1215c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_s7-1200_cpu_1215c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_s7-1200_cpu_1217c_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_s7-1200_cpu_1217c_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_s7-1200_cpu_1217c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_s7-1200_cpu_1217c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_s7-1500_cpu_1518_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_s7-1500_cpu_1518:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_s7-1500_cpu_1518:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511c_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_s7-1500_cpu_1511c_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_s7-1500_cpu_1511c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_s7-1500_cpu_1511c:-:*:*:*:*:*:*:*
  • cpe:2.3:o:siemens:simatic_s7-1500_cpu_1512c_firmware:*:*:*:*:*:*:*:*
    cpe:2.3:o:siemens:simatic_s7-1500_cpu_1512c_firmware:*:*:*:*:*:*:*:*
  • cpe:2.3:h:siemens:simatic_s7-1500_cpu_1512c:-:*:*:*:*:*:*:*
    cpe:2.3:h:siemens:simatic_s7-1500_cpu_1512c:-:*:*:*:*:*:*:*
  • cpe:2.3:a:siemens:simatic_s7-1500:*:*:*:*:*:*:*:*
    cpe:2.3:a:siemens:simatic_s7-1500:*:*:*:*:*:*:*:*
  • cpe:2.3:a:siemens:simatic_s7-plcsim_advanced:*:*:*:*:*:*:*:*
    cpe:2.3:a:siemens:simatic_s7-plcsim_advanced:*:*:*:*:*:*:*:*
CVSS
Base: 5.0 (as of 09-10-2019 - 23:45)
Impact:
Exploitability:
CWE CWE-284
CAPEC
  • Embedding Scripts within Scripts
    An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
  • Signature Spoofing by Key Theft
    An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
NONE PARTIAL NONE
cvss-vector via4 AV:N/AC:L/Au:N/C:N/I:P/A:N
Last major update 09-10-2019 - 23:45
Published 13-08-2019 - 19:15
Last modified 10-03-2020 - 20:15
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