Vulnerability identifier: #VU10899

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-2018-0217

CWE-ID: CWE-77

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Cisco ASR 5000 Series
Hardware solutions / Firmware

Vendor: Cisco Systems, Inc

Description
The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists in the CLI of the Cisco StarOS operating system for Cisco ASR 5000 Series Aggregation Services Routers due to insufficient validation of commands that are supplied to certain configurations in the CLI. A local attacker can inject specially crafted arguments into a vulnerable CLI command, insert and execute arbitrary commands in the CLI.

Mitigation
Update to version 21.7.M0.68711, 21.7.D0.68717, 21.7.0.68846, 21.7.0.

Vulnerable software versions

Cisco ASR 5000 Series: 21.3.0.67664 - 21.7.0

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-staros

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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.