#VU20383 Input validation error in Enterprise NFV Infrastructure Software - CVE-2019-1984

Vulnerability identifier: #VU20383

Vulnerability risk: Low

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-1984

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Enterprise NFV Infrastructure Software
Server applications / Virtualization software

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to overwrite files on the underlying operating system (OS) of an affected device.

The vulnerability exists due to improper input validation in an NFVIS file-system command. A remote authenticated administrator can use specially crafted variables during the execution of an affected command and overwrite arbitrary files on the underlying OS.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Enterprise NFV Infrastructure Software: before 3.12.1

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External links
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-nfv-filewrite

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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