Vulnerability identifier: #VU11330

Vulnerability risk: Low

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

CVE-ID: CVE-2018-0196

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco IOS XE
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a remote authenticated attacker to write arbitrary files to the target system.

The weakness exists in the web-based user interface (web UI) due to insufficient input validation of HTTP requests that are sent to the web UI. A remote attacker can send a malicious HTTP request to the web UI and write arbitrary files.

Mitigation
Update to versions 16.3.2, 16.3(1.28) or 11.3(1).

Vulnerable software versions

Cisco IOS XE: 16.1.2 - 16.3.1

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-wfw

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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.