What is CVE-2021-1259?

CVE-2021-1259 is a vulnerability in the web-based management interface of Cisco SD-WAN vManage Software that allows an authenticated attacker to conduct path traversal attacks and obtain write access to sensitive files.

How severe is CVE-2021-1259?

CVE-2021-1259 has a severity rating of 6.5, which is considered medium.

How does CVE-2021-1259 affect Cisco SD-WAN vManage Software?

CVE-2021-1259 affects Cisco SD-WAN vManage Software version up to and excluding 18.2.0.

How can an attacker exploit CVE-2021-1259?

An authenticated attacker can exploit CVE-2021-1259 by conducting path traversal attacks on the web-based management interface of Cisco SD-WAN vManage Software.

Is there a fix available for CVE-2021-1259?

Yes, Cisco has provided a security advisory with remediation steps for CVE-2021-1259 at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vman-pathtrav-Z5mCVsjf

Vulnerability/
CVE-2021-1259

medium

6.8

CWE

20/1/2021

12/11/2024

CVE-2021-1259: Cisco SD-WAN vManage Software Path Traversal Vulnerability

First published: Wed Jan 20 2021(Updated: )

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to conduct path traversal attacks and obtain write access to sensitive files on an affected system. The vulnerability is due to insufficient validation of HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request that contains directory traversal character sequences to an affected system. A successful exploit could allow the attacker to write arbitrary files on the affected system.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco SD-WAN vManage	<18.2.0

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vman-pathtrav-Z5mCVsjf

Frequently Asked Questions

What is CVE-2021-1259?
CVE-2021-1259 is a vulnerability in the web-based management interface of Cisco SD-WAN vManage Software that allows an authenticated attacker to conduct path traversal attacks and obtain write access to sensitive files.
How severe is CVE-2021-1259?
CVE-2021-1259 has a severity rating of 6.5, which is considered medium.
How does CVE-2021-1259 affect Cisco SD-WAN vManage Software?
CVE-2021-1259 affects Cisco SD-WAN vManage Software version up to and excluding 18.2.0.
How can an attacker exploit CVE-2021-1259?
An authenticated attacker can exploit CVE-2021-1259 by conducting path traversal attacks on the web-based management interface of Cisco SD-WAN vManage Software.
Is there a fix available for CVE-2021-1259?
Yes, Cisco has provided a security advisory with remediation steps for CVE-2021-1259 at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-vman-pathtrav-Z5mCVsjf

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