Vulnerability Details : CVE-2019-18336
A vulnerability has been identified in SIMATIC S7-300 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V3.X.17), SIMATIC TDC CP51M1 (All versions < V1.1.8), SIMATIC TDC CPU555 (All versions < V1.1.1), SINUMERIK 840D sl (All versions < V4.8.6), SINUMERIK 840D sl (All versions < V4.94). Specially crafted packets sent to port 102/tcp (Profinet) could cause the affected device to go into defect mode. A restart is required in order to recover the system. Successful exploitation requires an attacker to have network access to port 102/tcp, with no authentication. No user interation is required. At the time of advisory publication no public exploitation of this security vulnerability was known.
Products affected by CVE-2019-18336
- cpe:2.3:o:siemens:simatic_s7-300_cpu_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-300_cpu_312_ifm_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-300_cpu_313_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-300_cpu_314_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-300_cpu_314_ifm_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-300_cpu_315_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-300_cpu_315-2_dp_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-300_cpu_316-2_dp_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_s7-300_cpu_318-2_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinumerik_840d_sl:*:*:*:*:*:*:*:*
- cpe:2.3:a:siemens:sinumerik_840d_sl:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_tdc_cpu555_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_tdc_cp51m1_firmware:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-18336
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 41 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-18336
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2019-18336
-
The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.Assigned by:
- nvd@nist.gov (Primary)
- productcert@siemens.com (Secondary)
References for CVE-2019-18336
-
https://cert-portal.siemens.com/productcert/pdf/ssa-508982.pdf
Vendor Advisory
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