Cisco SD-WAN vManage Software Improper Link Resolution Before File Access (‘Link Following’) Vulnerability

Summary

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to read arbitrary files on the underlying filesystem of the device.

Credit:

The information has been provided by Johnny Yu

The original article can be found at:https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vmanwebid-5QWMcCvt


Details

The vulnerability is due to insufficient file scope limiting. An attacker could exploit this vulnerability by creating a specific file reference on the filesystem and then accessing it through the web-based management interface. A successful exploit could allow the attacker to read arbitrary files from the filesystem of the underlying operating system.

 

Vulnerable Systems:

Cisco SD-WAN vManage Software

 

CVE Information:

CVE-2020-3437

 

Disclosure Timeline:
Published Date:7/16/2020

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