Privilege escalation in Siemens SCALANCE X, RUGGEDCOM WiMAX, RFID 181-EIP, and SIMATIC RF182C



Published: 2018-06-15
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-4833
CWE-ID CWE-264
Exploitation vector Local network
Public exploit N/A
Vulnerable software
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RUGGEDCOM WiMAX
Hardware solutions / Routers & switches, VoIP, GSM, etc

SIMATIC RF182C
Hardware solutions / Routers & switches, VoIP, GSM, etc

SCALANCE X414
Hardware solutions / Routers & switches, VoIP, GSM, etc

SCALANCE X-408
Hardware solutions / Routers & switches, VoIP, GSM, etc

SCALANCE X-300
Hardware solutions / Routers & switches, VoIP, GSM, etc

SCALANCE X-204RNA
Hardware solutions / Routers & switches, VoIP, GSM, etc

RFID 181-EIP
Hardware solutions / Routers & switches, VoIP, GSM, etc

SCALANCE X-200 IRT
Hardware solutions / Routers & switches, VoIP, GSM, etc

SCALANCE X-200
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Siemens

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Privilege escalation

EUVDB-ID: #VU13343

Risk: Low

CVSSv3.1: 8.3 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-4833

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows an adjacent attacker to gain elevated privileges on the target system.

The vulnerability exists due to insufficient validation of user-supplied input. An adjacent attacker can send a specially crafted DHCP response to a client’s DHCP request and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

RUGGEDCOM WiMAX: 4.4 - 4.5

SIMATIC RF182C: All versions

SCALANCE X414: All versions

SCALANCE X-408: All versions

SCALANCE X-300: All versions

SCALANCE X-204RNA: All versions

RFID 181-EIP: All versions

SCALANCE X-200 IRT: All versions

SCALANCE X-200: All versions

External links

http://cert-portal.siemens.com/productcert/pdf/ssa-181018.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.



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