Southeast AsiaHackers breached Greynoise honeypots through a Linux login flaw.
Alpine Linux machines face the most risk among millions of internet-facing Secure Shell servers.
A password over 256 characters, tried on a passwordless account, makes musl’s hashing function return an asterisk that OpenSSH misreads.
Exploitation needs several conditions, including OpenSSH running without pluggable authentication modules.
OpenSSH has released a fix, and Greynoise says a GT10 server it accessed revealed other potential victims.
How each outlet framed it
- Ars Technica leans critical
- names the attacking group GT10 and notes its backdoor carries Chinese-language comments and appears AI-generated
Sources: Ars Technica