Cisco Mobility Client

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Micol Cohn

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Aug 3, 2024, 5:59:03 PM8/3/24

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A vulnerability in the client update process of Cisco AnyConnect Secure Mobility Client Software for Windows and Cisco Secure Client Software for Windows could allow a low-privileged, authenticated, local attacker to elevate privileges to those of SYSTEM. The client update process is executed after a successful VPN connection is established.

This vulnerability exists because improper permissions are assigned to a temporary directory that is created during the update process. An attacker could exploit this vulnerability by abusing a specific function of the Windows installer process. A successful exploit could allow the attacker to execute code with SYSTEM privileges.

Cisco has released free software updates that address the vulnerability described in this advisory. Customers with service contracts that entitle them to regular software updates should obtain security fixes through their usual update channels.

Customers may only install and expect support for software versions and feature sets for which they have purchased a license. By installing, downloading, accessing, or otherwise using such software upgrades, customers agree to follow the terms of the Cisco software license:
-user-license-agreement.html

Additionally, customers may only download software for which they have a valid license, procured from Cisco directly, or through a Cisco authorized reseller or partner. In most cases this will be a maintenance upgrade to software that was previously purchased. Free security software updates do not entitle customers to a new software license, additional software feature sets, or major revision upgrades.

The Cisco Support and Downloads page on Cisco.com provides information about licensing and downloads. This page can also display customer device support coverage for customers who use the My Devices tool.

When considering software upgrades, customers are advised to regularly consult the advisories for Cisco products, which are available from the Cisco Security Advisories page, to determine exposure and a complete upgrade solution.

In all cases, customers should ensure that the devices to be upgraded contain sufficient memory and confirm that current hardware and software configurations will continue to be supported properly by the new release. If the information is not clear, customers are advised to contact the Cisco Technical Assistance Center (TAC) or their contracted maintenance providers.

Customers who purchase directly from Cisco but do not hold a Cisco service contract and customers who make purchases through third-party vendors but are unsuccessful in obtaining fixed software through their point of sale should obtain upgrades by contacting the Cisco TAC: -cisco-worldwide-contacts.html

In the following tables, the left column lists Cisco software releases. The right column indicates whether a release is affected by the vulnerability that is described in this advisory and the first release that includes the fix for this vulnerability. Customers are advised to upgrade to an appropriate fixed software release as indicated in this section.

To learn about Cisco security vulnerability disclosure policies and publications, see the Security Vulnerability Policy. This document also contains instructions for obtaining fixed software and receiving security vulnerability information from Cisco.

THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.

A standalone copy or paraphrase of the text of this document that omits the distribution URL is an uncontrolled copy and may lack important information or contain factual errors. The information in this document is intended for end users of Cisco products.

The Anyconnect secure mobility client is behaving oddly. Sometimes it keeps pop-ing in the lower right of my window with the message -Web Authentication Required/You may need to use a browser to gain access" and sometimes when i am trying to open it- it keeps giving me this error, screen shot attached and also get some other type of error, for which too the screenshot attached.

Next I would run a port scan on the remote VPN endpoint to determine if those ports are open. Your ISP may very well be blocking this type of traffic, may be on purpose or as a result of an upgrade/update on their equipment.

One of the last issues we are trying to resolve is getting the vpn profiles to work with the client, when the profile is downloaded from our MX68 appliance it works, and the dropdown box populates with multiple gateways. however the powers that be require the profiles to be set before our users connect to the VPN for the first time.

however, after manually placing the .xml file in the profile folder it doesn't populate. I have restarted the services, rebooted, reinstalled, renamed the .xml, remade the file via the profile builder, but nothing I've tried so far has gotten this to work.

##EDIT: to anyone who stumbles on this in the future, the "Profile.xml" is case sensitive. If you attempt to use "profile.xml" for the cisco VPN client, it will not work. @alemabrahao had the solution dead on, this is just a reminder to double check the case of your file.

It's weird because I have been scouring looking for info and what is provided is generally what I have / had done.

@alemabrahao I used your exact profile format posted above thinking maybe its my file, but still the same result.

When you upload the profile in the Meraki dashboard, it ALWAYS appends .XML when it is downloaded by AnyConnect. So if you upload company.xml, it gets downloaded as company.xml.xml. So I tend to upload the profiles without an extension.

Next, if you have another Cisco product, such as Cisco Umbrella, you get to use Cisco SecureX. You can buy just a single licence for Cisco Umbrella (cheap) and not even use it, to get access to SecureX.

Why might you want to use Cisco SecureX? Because it cloud manages AnyConnect. You no longer use profiles - you control the settings in the Cisco SecureX dashboard. You can automate software updates, create test profiles, etc. Basically, this is the way you want to be rolling out new AnyConnect deployments.

Keep getting this message when trying to re-install Cisco VPN - "anyconnect secure mobility client cannot be installed on this disk. Version 3.1.02026 of the cisco anyconnect secure mobility client is already installed." Moved and deleted and when I search I only find the download or emails with information on the subject.

Whenever you remove system modifications, they must be removed completely, and the only way to do that is to use the uninstallation tool, if any, provided by the developers, or to follow their instructions. If the software has been incompletely removed, you may have to re-download or even reinstall it in order to finish the job.

Tried again with reboots (same way I did before) and it worked loading the web based one. Talked with our VPN guru here also (has a MAC at home) and went through the process with him and he did the same thing I did. Well, it worked for him.