Vulnerability identifier: #VU7380

Vulnerability risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-4784

CWE-ID: CWE-200

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 obtain potentially sensitive information on the target system.

The weakness exists due to an error in the integrated web server (Port 80/TCP). A remote attacker can send specially crafted HTTP request and read arbitrary data on the device.

Successful exploitation of the vulnerability results in information disclosure.

Mitigation
Update SIPROTEC 4 to version 4.27.
Update SIPROTEC Compact to version 4.76.

Vulnerable software versions

SIPROTEC 4: 4.24 - 4.26

Siprotec Compact: 4.24 - 4.75

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External links
http://www.siemens.com/cert/pool/cert/siemens_security_advisory_ssa-547990.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.