This security advisory describes one low risk vulnerability.

1) OS Command Injection

Severity: Low

CVSSv3:
6.8 [CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-3167

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

Description


The vulnerability allows a local user to execute arbitrary shell commands on the target system.


The vulnerability exists due to insufficient input validation in the CLI. A local user can include a specially crafted arguments to specific commands and execute arbitrary OS commands on the target system.


Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


This vulnerability affects the following products if they are running a vulnerable release of Cisco FXOS Software or Cisco UCS Manager Software:

  • Firepower 1000 Series
  • Firepower 2100 Series
  • Firepower 4100 Series
  • Firepower 9300 Security Appliances
  • UCS 6200 Series Fabric Interconnects
  • UCS 6300 Series Fabric Interconnects
  • UCS 6400 Series Fabric Interconnects

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

Cisco FXOS:
-, 2.2, 2.3, 2.4

Cisco ASA:
9.8, 9.9, 9.10, 9.12, 9.13

Cisco Firepower Threat Defense (FTD):
6.2.2, 6.2.3, 6.3.0, 6.4.0, 6.5.0

Cisco UCS Manager:
-, 3.2, 4.0

CPE
External links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-fxos-ucs-cmdinj

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.





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