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CVE-2018-16561
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
Description
A vulnerability has been identified in SIMATIC S7-300 CPUs (All versions < V3.X.16). The affected CPUs improperly validate S7 communication packets which could cause a Denial-of-Service condition of the CPU. The CPU will remain in DEFECT mode until manual restart. Successful exploitation requires an attacker to be able to send a specially crafted S7 communication packet to a communication interface of the CPU. This includes Ethernet, PROFIBUS, and Multi Point Interfaces (MPI). No user interaction or privileges are required to exploit the security vulnerability. The vulnerability could allow causing a Denial-of-Service condition of the core functionality of the CPU, compromising the availability of the system. At the time of advisory publication no public exploitation of this security vulnerability was known. Siemens confirms the security vulnerability and provides mitigations to resolve the security issue..
CVSSv2.0 Score
- Severity
- High
- Base Score
- 7.8/10
- Exploit Score
- 10/10
- Access Vector
- Network
- Access Complexity
- Low
- Authentication Required
- None
- Impact Score
- 6.9/10
- Confidentiality Impact
- None
- Availability Impact
- Complete
- Integrity Impact
- None
CVSSv3.1 Score
- Severity
- High
- Base Score
- 7.5/10
- Exploit Score
- 3.9/10
- Access Vector
- Network
- Access Complexity
- Low
- Privileges Required
- None
- Impact Score
- 3.6/10
- Confidentiality Impact
- None
- Availability Impact
- High
- Integrity Impact
- None
- Scope
- Unchanged
- User Interaction
- None
Products Affected
CPE | Affected | Vulnerable | Excluding | Edit |
---|---|---|---|---|
cpe:2.3:o:siemens:simatic_s7-300_firmware:-:*:*:*:*:*:*:* |
Yes
|
- | ||
cpe:2.3:h:siemens:simatic_s7-300:-:*:*:*:*:*:*:* |
No
|
- | ||
cpe:2.3:o:siemens:simatic_s7-300f_firmware:-:*:*:*:*:*:*:* |
Yes
|
- | ||
cpe:2.3:h:siemens:simatic_s7-300f:-:*:*:*:*:*:*:* |
No
|
- | ||
cpe:2.3:o:siemens:simatic_s7-300fs_firmware:-:*:*:*:*:*:*:* |
Yes
|
- | ||
cpe:2.3:h:siemens:simatic_s7-300fs:-:*:*:*:*:*:*:* |
No
|
- | ||
cpe:2.3:o:siemens:simatic_s7-300t_firmware:-:*:*:*:*:*:*:* |
Yes
|
- | ||
cpe:2.3:h:siemens:simatic_s7-300t:-:*:*:*:*:*:*:* |
No
|
- |