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Blog Home > Security > Important Security Update – Stay Protected Against VPN
Information Disclosure (CVE-2024-24919)
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SecurityMay 27, 2024


IMPORTANT SECURITY UPDATE – STAY PROTECTED AGAINST VPN INFORMATION DISCLOSURE
(CVE-2024-24919)

ByCheck Point Team
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Updated: May 28, 2024 at 1PM PT

Yesterday (May 27, 2024) we delivered a solution that addresses attempts we saw
on a small number of customers’ VPN remote access networks as referenced below.

Today, we found the root cause for these and are now releasing a fix. To remain
protected, it is mandatory for customers to install this fix on Check Point
Network Security gateways.

The vulnerability potentially allows an attacker to read certain information on
Internet-connected Gateways with remote access VPN or mobile access enabled. The
attempts we’ve seen so far, as previously alerted on May 27, focus on remote
access scenarios with old local accounts with unrecommended password-only
authentication. Within a few hours of this development, Check Point released an
easy to implement solution that prevents attempts to exploit this vulnerability.
To stay secure, customers should follow these simple instructions to deploy the
provided solution.

The attempts we’ve seen so far, in line with yesterday’s alert, are focusing on
the same scenario with the known small number of customers we referred to
yesterday. We’re working with customers who we believe were affected to
remediate the situation. Check Point’s network is not affected by this.

Customer security is our top priority. We will continue to investigate this
issue and will provide additional updates on this blog.

--------------------------------------------------------------------------------

Original Post:

Over the past few months, we have observed increased interest of malicious
groups in leveraging remote-access VPN environments as an entry point and attack
vector into enterprises.

Attackers are motivated to gain access to organizations over remote-access
setups so they can try to discover relevant enterprise assets and users, seeking
for vulnerabilities in order to gain persistence on key enterprise assets.

We have recently witnessed compromised VPN solutions, including various cyber
security vendors. In light of these events, we have been monitoring attempts to
gain unauthorized access to VPNs of Check Point’s customers.

By May 24, 2024 we identified a small number of login attempts using old VPN
local-accounts relying on unrecommended password-only authentication method.

We have assembled special teams of Incident Response, Research, Technical
Services and Products professionals which thoroughly explored those and any
other potential related attempts. Relying on these customers notifications and
Check Point’s analysis, the teams found within 24 hours a few potential
customers which were subject to similar attempts.

Password-only authentication is considered an unfavourable method to ensure the
highest levels of security, and we recommend not to rely on this when logging-in
to network infrastructure.

Check Point has released a solution, as a preventative measure to address these
unauthorised remote access attempts.

We encourage our customers to enhance their VPN security posture by:

 * Check if you have local accounts, if they were used and by whom.
 * If you don’t use them – best to disable them.
 * If you have local accounts which you want to use and are password-only
   authenticated, add another layer of authentication (like certificates) to
   increase your environments IT security.
 * As said, If you are a Check Point customer, deploy our solution on your
   Security Gateways. This will automatically prevent unauthorized access to
   your VPNs by local accounts with password-only authentication method.

Learn more and receive practical guidance for configuration monitoring and
practices to enhance your VPN security posture.

For any additional assistance required, please contact Check Point technical
support Center or your local Check Point representative.

We value the collaboration of our customers and dedication of our teams to reach
a solution which effectively addresses any such attempts.



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