Vulnerability identifier: #VU7384

Vulnerability risk: Medium

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-7114

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SIPROTEC 4
Hardware solutions / Security hardware applicances
Siprotec Compact
Hardware solutions / Security hardware applicances

Vendor: Siemens

Description
The vulnerability allows a remote attacker to bypass security restrictions.

The weakness exists due to an error related to EN100 Ethernet module. A remote attacker can send specially crafted HTTP request and bypass access restrictions.

Successful exploitation of the vulnerability results in administrative access to the system.

Mitigation
Update SIPROTEC 4 to version 4.29.
Update SIPROTEC Compact to version 4.29.

Vulnerable software versions

SIPROTEC 4: 4.24 - 4.28

Siprotec Compact: 4.24 - 4.28

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External links
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-630413.pdf

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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.