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Attacker can log in via SSH without knowing any password

A critical flaw in OpenSSH 10.6p2 allows login without a password if an account lacks one but another has a $5$ or $6$ hash. Users must update openssh-server or disable password authentication immediately.

Field
computer security
What they did
Researchers discovered a vulnerability in the SSH protocol that allows an attacker to log in without a password by sending a specific long text.
Why it matters
This enables hackers to gain access to servers that have at least one user with a password, using the names of accounts that have no password set.
#openssh#alpine linux#ssh#security#authentication

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