Sure, once you have root on the host system you can pretty much do whatever you want ... adding entries to udev isn't anything revolutionary.
this post was submitted on 25 Aug 2024
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"At the time of this writing, the persistence technique used (udev rules) is not documented by MITRE ATT&CK," the researchers note, highlighting that sedexp is an advanced threat that hides in plain site.
These rules contain three parameters that specify its applicability (ACTION== "add"), the device name (KERNEL== "sdb1"), and what script to run when the specified conditions are met (RUN+="/path/to/script").
"Malware"? Fucking cybersec press is the worst.
What's next, they're gonna call "sudo" a 0-day vuln?
Not 0-day but it had a vew privilege escalation vulns already. https://thekh4tt4k.medium.com/sudo-vulnerability-in-linux-lead-to-privilege-escalation-cve-2023-22809-fbb7f300ef49
Sure, but this isn't a privilege escalation, this requires privilege escalation, and it merely installs a backdoor that preserves that privilege.
It's like installing something in cron or systemd, it's not a vulnerability in itself, but it can allow an attacker to add a backdoor once they exploit a vulnerability once.
Ah fine, that was the first result in google, i didn't read it enough. But there were some privilege escalations in sudo and lots more of misconfiguration. https://cve.mitre.org/cgi-bin/cvekey.cgi?keyword=sudo