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Dear Valued Customer,
We would like to inform you of an important security update affecting ConfigServer Firewall (CSF), which is commonly used on Linux hosting environments including Shared Hosting, VPS, and Dedicated Servers.
Security Advisory
A recently disclosed security vulnerability has been identified in older versions of ConfigServer Firewall (CSF). According to the vendor, multiple vulnerabilities may allow an attacker to escalate privileges and potentially gain root-level access to an affected server.
Affected Versions
| Status |
Version |
| Vulnerable |
CSF 16.20-1 and earlier |
| Patched |
CSF 16.30-1 and later |
Potential Impact
Successful exploitation of these vulnerabilities could allow unauthorized users to obtain elevated privileges, potentially compromising the security and integrity of the affected server.
Recommended Action
If you manage your own VPS or Dedicated Server, we strongly recommend updating CSF to the latest available version immediately.
CentOS 7 / CloudLinux 7
yum clean all
/scripts/update-packages
AlmaLinux / CloudLinux 8, 9 & 10
dnf clean metadata
/scripts/update-packages
Ubuntu
apt update
/scripts/update-packages
Reference
Vendor Security Advisory:
https://support.cpanel.net/hc/en-us/articles/42503837957015-Security-CSF-Security-Release
Need Assistance?
If you require assistance updating your server or have any questions regarding this security advisory, please contact our Support Team. We will be happy to assist you.
Thank you for your continued trust in our services.
Regards,
SysopHost Support Team
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