medium
6.7
CWE
20
Advisory Published
Updated

CVE-2020-3166: Cisco FXOS Software CLI Arbitrary File Read and Write Vulnerability

First published: Wed Feb 26 2020(Updated: )

A vulnerability in the CLI of Cisco FXOS Software could allow an authenticated, local attacker to read or write arbitrary files on the underlying operating system (OS). The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by including crafted arguments to a specific CLI command. A successful exploit could allow the attacker to read or write to arbitrary files on the underlying OS.

Credit: ykramarz@cisco.com ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco Firepower Threat Defense>=6.2.2<6.2.3.16
Cisco Firepower Threat Defense>=6.3.0<6.5.0.3
Cisco Adaptive Security Appliance Software>=9.8<9.9.2.66
Cisco Adaptive Security Appliance Software>=9.10<9.13.1.5
Cisco Firepower 1010
Cisco Firepower 1120
Cisco Firepower 1140
Cisco Firepower 1150
Cisco Firepower 2110
Cisco Firepower 2120
Cisco Firepower 2130
Cisco Firepower 2140
Cisco Firepower Extensible Operating System<2.2.2.97
Cisco Firepower Extensible Operating System>=2.3<2.3.1.155
Cisco Firepower Extensible Operating System>=2.4<2.4.1.238
Cisco Firepower Extensible Operating System>=2.6<2.6.1.157
Cisco Firepower 4110
Cisco Firepower 4115
Cisco Firepower 4120
Cisco Firepower 4125
Cisco Firepower 4140
Cisco Firepower 4145
Cisco Firepower 4150
Cisco Firepower 9300

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Reference Links

Frequently Asked Questions

  • What is CVE-2020-3166?

    CVE-2020-3166 is a vulnerability in the CLI of Cisco FXOS Software that could allow an authenticated local attacker to read or write arbitrary files on the underlying operating system.

  • How does CVE-2020-3166 affect Cisco Firepower Threat Defense?

    CVE-2020-3166 affects Cisco Firepower Threat Defense versions 6.2.2 to 6.2.3.16 and versions 6.3.0 to 6.5.0.3.

  • How does CVE-2020-3166 affect Cisco Adaptive Security Appliance Software?

    CVE-2020-3166 affects Cisco Adaptive Security Appliance Software versions 9.8 to 9.9.2.66 and versions 9.10 to 9.13.1.5.

  • What is the severity of CVE-2020-3166?

    The severity of CVE-2020-3166 is medium with a CVSS score of 6.7.

  • How can I fix CVE-2020-3166?

    To fix CVE-2020-3166, Cisco has provided software updates that address the vulnerability. Please refer to the Cisco advisory for more information.

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