Linux admins -

Have you ever installed a cool new network monitoring tool on your webserver, only to discover a few days later the server was acting weird? Would you even know? This is one possible scenario with the new Auto-Color malware that was recently discovered. It doesn't even require root privileges to run, but once it does, it uses obfuscation and advanced persistence techniques to evade detection and steal your data.

This malware is unique in its evasion techniques and how easily it bypasses typical security scans. Learn more about how auto-color malware works and how to protect your systems against data theft, service disruption, and how to identify its presence.

Yours in Open Source,

Dv Signature Newsletter 2024 Esm W150

Dave Wreski

LinuxSecurity Founder

SAP NetWeaver

The Discovery 

CVE-2025-31324, a critical vulnerability in SAP NetWeaver that was disclosed in April 2025, is being used to gain a foothold on impacted Linux systems with the stealthy Auto-Color Linux backdoor malware.

Sap Netweaver Esm W400

The Impact

This exploit could result in persistence, lateral movement, and full compromise of your Linux servers.

The Fix

Patches have been released to fix this dangerous flaw. All impacted admins should update as soon as possible to secure their servers against Auto-Color Linux backdoor malware attacks.

Your Related Advisories:

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Apache HTTP Server 

The Discovery 

Attackers are actively exploiting an old security issue in Apache HTTP server versions 2.4.49 and 2.4.50 (CVE-2021-41773) to deploy the Linuxsys cryptominer. The campaign exhibits a notable level of stealth and efficiency, making detection and mitigation particularly challenging.

Apache2 Esm W400

 The Impact

This flaw enables attackers to mine Monero cryptocurrency on affected systems.

The Fix

Patches have been released to fix this bug, but many impacted users still have not applied them. Be sure to update immediately (if you have not already) to secure your server and prevent costly exploits.

Your Related Advisories:

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