cisco-sa-20190515-nxos-fxos-info: Cisco FXOS and NX-OS Software Sensitive File Read Information Disclosure Vulnerability
First published: Wed May 15 2019(Updated: )
A vulnerability in the implementation of a CLI diagnostic command in Cisco FXOS Software and Cisco NX-OS Software could allow an authenticated, local attacker to view sensitive system files that should be restricted. The attacker could use this information to conduct additional reconnaissance attacks. The vulnerability is due to incomplete role-based access control (RBAC) verification. An attacker could exploit this vulnerability by authenticating to the device and issuing a specific CLI diagnostic command with crafted user-input parameters. An exploit could allow the attacker to perform an arbitrary read of a file on the device, and the file may contain sensitive information. The attacker needs valid device credentials to exploit this vulnerability. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-fxos-info
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco FX-OS | =2.4<2.4.1.101=2.3<2.3.1.111=2.2<2.2.2.91=Prior 2.2<2.2.2.91 | 2.4.1.101 2.3.1.111 2.2.2.91 2.2.2.91 |
| Cisco NX-OS | ||
| Cisco NX-OS | =4.0<4.0(1a)=Prior to 4.0<4.0(1a) | 4.0(1a) 4.0(1a) |
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Reference Links
Frequently Asked Questions
What is Cisco FXOS and NX-OS Software Sensitive File Read Information Disclosure Vulnerability?
It is a vulnerability in the implementation of a CLI diagnostic command in Cisco FXOS Software and Cisco NX-OS Software that allows an authenticated, local attacker to view sensitive system files that should be restricted.
Who is affected by Cisco FXOS and NX-OS Software Sensitive File Read Information Disclosure Vulnerability?
Users of Cisco FXOS Software versions 2.4, 2.3, and 2.2, and Cisco NX-OS Software version 4.0(1a) and prior are affected.
What is the severity of Cisco FXOS and NX-OS Software Sensitive File Read Information Disclosure Vulnerability?
The severity of this vulnerability is medium with a CVSS score of 5.5.
How can an attacker exploit Cisco FXOS and NX-OS Software Sensitive File Read Information Disclosure Vulnerability?
The attacker needs to be authenticated and local to exploit this vulnerability.
Is there a remedy available for Cisco NX-OS Software?
No, there is no remedy available for Cisco NX-OS Software at this time.
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- vendor/cisco
- canonical/cisco fx-os
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- version/cisco fx-os/2.3
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- version/cisco fx-os/prior 2.2
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- version/cisco nx-os/4.0
- version/cisco nx-os/prior to 4.0