Vulnerability identifier: #VU10900

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-2018-0224

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 toinsufficient validation of user-supplied input. A local attacker can inject malicious arguments into a vulnerable CLI command and execute arbitrary commands with root privileges.

Mitigation
Update to version 21.6.RU0.68455, 21.6.D0.68319, 21.6.A0.68321, 21.5.M0.68317, 21.5.C0.68318, 21.5.0.68363, 21.5.0

Vulnerable software versions

Cisco ASR 5000 Series: 21.3.0.67664 - 21.5.0

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180307-staros1

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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.