What is CVE-2020-3135?

CVE-2020-3135 is a vulnerability in the web-based management interface of Cisco Unified Communications Manager (UCM) that allows an unauthenticated attacker to conduct a cross-site request forgery (CSRF) attack.

How severe is CVE-2020-3135?

CVE-2020-3135 has a severity rating of 8.8, which is considered high.

What is the affected software of CVE-2020-3135?

The affected software of CVE-2020-3135 is Cisco Unified Communications Manager version 11.5(1) and earlier.

How can an attacker exploit CVE-2020-3135?

An attacker can exploit CVE-2020-3135 by tricking a user into clicking on a specially crafted link or visiting a malicious website, which would initiate a CSRF attack.

Is there a fix for CVE-2020-3135?

Yes, Cisco has released a security advisory with mitigation measures to address the vulnerability. Please refer to the Cisco Security Advisory for more information.

Vulnerability/
CVE-2020-3135

high

8.8

CWE

352

23/9/2020

13/11/2024

CVE-2020-3135: Cisco Unified Communications Manager Cross-Site Request Forgery Vulnerability

First published: Wed Sep 23 2020(Updated: )

A vulnerability in the web-based management interface of Cisco Unified Communications Manager (UCM) could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack on an affected device. The vulnerability is due to insufficient CSRF protections for the web-based management interface on an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to follow a malicious link. A successful exploit could allow the attacker to perform arbitrary actions with the privilege level of the targeted user.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco Unified Communications Manager	<11.5\(1\)

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Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ucm-csrf-NbhZTxL

Frequently Asked Questions

What is CVE-2020-3135?
CVE-2020-3135 is a vulnerability in the web-based management interface of Cisco Unified Communications Manager (UCM) that allows an unauthenticated attacker to conduct a cross-site request forgery (CSRF) attack.
How severe is CVE-2020-3135?
CVE-2020-3135 has a severity rating of 8.8, which is considered high.
What is the affected software of CVE-2020-3135?
The affected software of CVE-2020-3135 is Cisco Unified Communications Manager version 11.5(1) and earlier.
How can an attacker exploit CVE-2020-3135?
An attacker can exploit CVE-2020-3135 by tricking a user into clicking on a specially crafted link or visiting a malicious website, which would initiate a CSRF attack.
Is there a fix for CVE-2020-3135?
Yes, Cisco has released a security advisory with mitigation measures to address the vulnerability. Please refer to the Cisco Security Advisory for more information.

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