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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.72% probability · 76th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- siemens/simatic s7-300 cpu firmware · siemens/simatic s7-300 cpu 312 ifm firmware · siemens/simatic s7-300 cpu 313 firmware · siemens/simatic s7-300 cpu 314 firmware · siemens/simatic s7-300 cpu 314 ifm firmware · siemens/simatic s7-300 cpu 315 firmware · siemens/simatic s7-300 cpu 315-2 dp firmware · siemens/simatic s7-300 cpu 316-2 dp firmware · siemens/simatic s7-300 cpu 318-2 firmware · siemens/sinumerik 840d sl · siemens/simatic tdc cp51m1 firmware · siemens/simatic tdc cpu555 firmware
- Source
- productcert@siemens.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.