Command execution in Cisco Network Services Orchestrator

1) OS command execution

EUVDB-ID: #VU13223

Risk: High

CVSSv3.1: 8.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0274

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to execute shell commands on the target system.

The weakness exists in the CLI parser of Cisco Network Services Orchestrator (NSO) due to incorrect processing of the user’s input data in the certain parameter. A remote attacker can inject malicious arguments into vulnerable commands and execute arbitrary shell commands with root privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

The vulnerability is addressed in the following versions: 4.1.6.1, 4.2.4.1, 4.3.3.1, 4.4.2.1.

Vulnerable software versions

Cisco Network Services Orchestrator (NSO): 4.1.0 - 4.4.2

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180606-nso

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.