Always On VPN May 2024 Security Updates

Always On VPN RasMan Errors in Windows 10 1903

Once again, Microsoft has released its monthly security updates. For May 2024, there are several vulnerabilities in services related to Always On VPN that administrators will want to pay close attention to. Microsoft has identified known issues in the Routing and Remote Access Service (RRAS) and the Remote Access Connection Manager (RasMan) service for this release cycle.

RRAS

This month, Microsoft published seven security fixes for vulnerabilities discovered in RRAS. All seven are Remote Code Execution (RCE) vulnerabilities rated Important. In addition, all vulnerabilities in RRAS require specific information about the environment for compromise, mitigating some of the exposure.

CVE-2024-30009

CVE-2024-30014

CVE-2024-30015

CVE-2024-30022

CVE-2024-30023

CVE-2024-30024

CVE-2024-30029

RasMan

In addition to the updates for vulnerabilities in RRAS, Microsoft also released a security fix for issues identified in the Remote Access Connection Manager (RasMan) service. This update is marked Important but is not an RCE.

CVE-2024-30039

Recommendations

Although the vulnerabilities in RRAS are remotely exploitable, they will require specific information for an attacker to compromise. The risk of targeted attacks is lower than opportunistic ones, but administrators are still urged to update as soon as possible.

Additional Information

May 2024 Security Updates

Absolute Secure Access and IPv6

Absolute Secure Access (formerly NetMotion Mobility) is a premium enterprise secure remote access solution with deep user and application insight supporting Windows, Mac, iOS (iPhone and iPad), and Android devices. Although Absolute Secure Access supports IPv6 for remote network connections and client IP address assignment, the latter is not enabled by default. Administrators must make additional changes to the configuration to assign IPv6 addresses to their clients so they can access resources inside the tunnel using IPv6.

DHCPv6 and SLAAC

Absolute Secure Access supports DHCPv6 and Stateless Address Autoconfiguration (SLAAC) methods for assigning IPv6 addresses to connected clients. Although IPv6 client addressing is not enabled by default, it is quick and easy to configure.

Note: Absolute Secure Access does not currently support static IPv6 prefix assignment.

Enable IPv6

To enable IPv6 global support for all Absolute Secure Access clients, open the Secure Access management console and navigate to Configure > Client Settings > Virtual Address > Allocation Method: IPv6. Administrators can choose to support either DHCPv6 alone or DHCPv6 and SLAAC. After making a selection, click the Apply button to save the changes.

Once configured, Absolute Secure Access clients will be assigned an IPv6 address and can access IPv6 resources over the Secure Access tunnel.

Split Tunneling

If you have configured the Absolute Secure Access policy for split tunneling, ensure you have included your internal IPv6 prefix(es) defined in the split tunneling policy.

Additional Information

NetMotion Mobility is now Absolute Secure Access

Absolute Secure Access Zero Trust Network Access (ZTNA)

What’s New in Absolute Secure Access v13

Absolute Secure Access Features and Capabilities

Absolute Secure Access Advanced Features In Depth

Enterprise Zero Trust Network Access (ZTNA) and VPN

Always On VPN Ask Me Anything (AMA) March 2024

Do you have questions about Always On VPN? Are you having a specific issue you can’t figure out? Would you like more information about configuration options? Here’s your chance to get your questions answered! Join me on Tuesday, March 26, at 10:00 AM PDT (UTC -7) for an opportunity to ask me anything (AMA!) about Microsoft Windows Always On VPN and related technologies.

The AMA will be an open forum session where we can all talk shop about Always On VPN. It’s a great chance to learn new things and share experiences with your peers. We’ll discuss known issues and limitations, best practices, and more.

Everyone is welcome. Don’t miss out on this excellent opportunity to connect and learn. Register now!

Can’t make the session? Register anyway, and I’ll send you the link to the recording as soon as it is available!