Denial of service vulnerabilities in Siemens SIMATIC S7
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2018-13815 CVE-2018-16556 CVE-2018-16557 |
| CWE-ID | CWE-400 CWE-20 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
SIMATIC S7-1200 Hardware solutions / Firmware SIMATIC S7-1500 CPU Hardware solutions / Firmware SIMATIC S7-410 Hardware solutions / Firmware SIMATIC S7-400 Hardware solutions / Firmware SIMATIC S7-400 PN/DP V7 Server applications / SCADA systems SIMATIC S7-400 H Server applications / SCADA systems |
| Vendor | Siemens |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Resource exhaustion
EUVDB-ID: #VU15890
Risk: Low
CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-13815
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to resource exhaustion. A remote attacker can send packets to Port 102/TCP, exhaust the available connection pool by opening a sufficient number of connections to the device and cause the service to crash.
MitigationThe vulnerability has been fixed in the version 2.6.
Vulnerable software versionsSIMATIC S7-1200: before 2.6
SIMATIC S7-1500 CPU: before 2.6
External linkshttp://ics-cert.us-cert.gov/advisories/ICSA-18-317-05
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Improper input validation
EUVDB-ID: #VU15891
Risk: Low
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-16556
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to an error when processing malicious input. A remote attacker can send specially crafted packets to Port 102/TCP via Ethernet interface, via PROFIBUS, or via multi-point interfaces (MPI) and cause the affected devices to go into defect mode.
MitigationInstall update from vendor's website.
Vulnerable software versionsSIMATIC S7-410: All versions
SIMATIC S7-400 PN/DP V7: All versions
SIMATIC S7-400 H: All versions
SIMATIC S7-400: All versions
External linkshttp://ics-cert.us-cert.gov/advisories/ICSA-18-317-02
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Improper input validation
EUVDB-ID: #VU15892
Risk: Low
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-16557
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to cause DoS condition on the target system.
The vulnerability exists due to an error when processing malicious input. A remote attacker can send specially crafted packets to Port 102/TCP via Ethernet interface via PROFIBUS or MPI and cause the affected devices to crash.
MitigationInstall update from vendor's website.
Vulnerable software versionsSIMATIC S7-410: All versions
SIMATIC S7-400 PN/DP V7: All versions
SIMATIC S7-400 H: All versions
SIMATIC S7-400: All versions
External linkshttp://ics-cert.us-cert.gov/advisories/ICSA-18-317-02
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
