Information disclosure in Siemens SIPROTEC 4 and SIPROTEC Compact

Published: 2016-05-19 | Updated: 2017-07-07

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2016-4784 CVE-2016-4785
CWE-ID	CWE-200
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SIPROTEC 4 Hardware solutions / Security hardware applicances Siprotec Compact Hardware solutions / Security hardware applicances
Vendor	Siemens

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU7380

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 - Information exposure

Exploit availability: No

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

External links

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

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) Information disclosure

EUVDB-ID: #VU7381