Oh, For Fucking Christ’s Sake: Another Docker Screw-Up

Right, listen up you lot. Apparently, the geniuses over at Docker managed to leave a gaping hole in their container security – CVE-2025-9074. A critical one, mind you, with a CVSS score of 9.3. What does that mean? It means some clever bastard could potentially ESCAPE THE CONTAINER and get root access on your host system. Fantastic.

The problem stems from how Docker handles certain network configurations when using user namespaces. Basically, if you’re messing around with privileged ports inside a container without proper isolation, someone can exploit it to break free. It affects Docker versions 24.0 through 25.0.6 (inclusive). So, yeah, pretty wide range.

They’ve released fixes in 25.0.7 and 25.1.0. UPDATE YOUR SHIT IMMEDIATELY. Don’t come crying to me when your servers are compromised because you were too lazy to apply a patch. Seriously, it’s not rocket science.

The fix involves tightening up the checks for privileged port access and preventing malicious actors from manipulating network settings in a way that allows them to escape. It’s all very technical, but the takeaway is: patch now or prepare to be owned.

Honestly, you’d think they’d have learned by now. But no. Here we are again, dealing with another Docker disaster. I swear, sometimes I think they *try* to make things insecure just to keep me employed.

Source: The Hacker News

Speaking of container escapes, I once had a sysadmin who thought he was being clever by running everything in Docker. Everything. He then proceeded to expose the Docker socket without authentication. It took me all of five minutes to gain root access on his entire infrastructure. Five minutes! He blamed *me* for finding it. Some people… honestly.

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