Denial of service in Siemens 7KM PAC Switched Ethernet
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2017-9945 |
| CWE-ID | CWE-400 |
| Exploitation vector | Local network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
7KM PAC Switched Ethernet Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | Siemens |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Resource exhaustion
EUVDB-ID: #VU8067
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C]
CVE-ID: CVE-2017-9945
CWE-ID:
CWE-400 - Resource exhaustion
Exploit availability: No
DescriptionThe vulnerability allows an adajacent attacker to cause DoS condition on the target system.
The weakness exists in the Siemens 7KM PAC Switched Ethernet PROFINET expansion module due to input validation flaw. An adjacent attacker can send a specially crafted PROFINET DCP packet as a local Ethernet (Layer 2) broadcast, cause memory exhaustion and cause the application to restart.
Successful exploitation of the vulnerability results in denial of service.
Update to version 2.1.3.
7KM PAC Switched Ethernet: All versions
External linkshttp://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-771218.pdf
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
