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'Critical' vulnerability in OpenSSH uncovered, affects almost all Linux systems
(www.computing.co.uk)
this post was submitted on 01 Jul 2024
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the in depth technical details
TL;DR; sigalarm handler calls syslog which isn't safe to call from a signal handler context.
Their example exploit needed about 10k attempts to get a remote shell so it's not fast or quiet, but a neat find regardless
I can already imagine the log generated will be a hint. We usually automate those anyway as it is closer to (D)DoS too.