Multiple vulnerabilities in Siemens SINEC NMS

Published: 2021-09-15

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE ID	CVE-2021-37200 CVE-2021-37201
CWE ID	CWE-22 CWE-352
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SINEC NMS Server applications / Remote management servers, RDP, SSH
Vendor

Security Advisory

1) Path traversal

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2021-37200

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

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. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

SINEC NMS: before 1.0 SP1

CPE

cpe:2.3:a:siemens:sinec_nms:*:*:*:*:*:*:*:*

External links

https://cert-portal.siemens.com/productcert/pdf/ssa-330339.pdf

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.

2) Cross-site request forgery

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2021-37201

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)