Vulnerability identifier: #VU40843

Vulnerability risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-1601

CWE-ID: CWE-254

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SIMATIC STEP 7
Server applications / SCADA systems

Vendor: Siemens

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Siemens SIMATIC STEP 7 (TIA Portal) 12 and 13 before 13 SP1 Upd1 allows man-in-the-middle attackers to obtain sensitive information or modify transmitted data via unspecified vectors.

Mitigation
Install update from vendor's website.

Vulnerable software versions

SIMATIC STEP 7: 12 - 13

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External links
http://www.securityfocus.com/bid/72691
http://www.siemens.com/innovation/pool/de/forschungsfelder/siemens_security_advisory_ssa-315836.pdf
http://cert-portal.siemens.com/productcert/pdf/ssa-487246.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.