Vulnerability identifier: #VU23604

Vulnerability risk: High

CVSSv3.1: 9.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2019-18342

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
SiNVR 3 Central Control Server (CCS)
Server applications / SCADA systems

Vendor: Siemens

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in the SFTP service. A remote authenticated attacker can send a specially crafted SFTP request and read arbitrary files on the system.

Note: In conjunction with CVE-2019-18341, an unauthenticated remote attacker with network access to the CCS server can exploit this vulnerability to read or delete arbitrary files, or access other resources on the same server.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

SiNVR 3 Central Control Server (CCS): All versions

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External links
http://cert-portal.siemens.com/productcert/pdf/ssa-761617.pdf

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.