Vulnerability identifier: #VU628

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6414

CWE-ID: CWE-78

Exploitation vector: Local

Exploit availability: No

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

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a local authenticated user to gain elevated privileges and perform command injection on the target system.
The weakness is caused by improper input validation. Using of specially crafted iox command line parameters allows attackers to cause an input validation flaw and execute arbitrary commands on the IOx Linux guest operating system (GOS).
Successful exploitation of the vulnerability may lead to privilege escalation and command injection on the vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Cisco IOS: 12.0 - 15.2.4 ea

Cisco IOS XR: 5.1.0 - 6.0.1

Cisco IOS XE: 3.15S - 3.17S

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160921-iox

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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