AIKIDO-2026-563009
net-ssh is vulnerable to Denial of Service (DoS)
53
Medium Risk
This Affects:
net-sshTL;DR
Net::SSH::KeyFactory.load_data_private_key parses OpenSSH private keys through bcrypt_pbkdf without bounding the number of key derivation rounds encoded in the key file. A crafted key with an extreme round count locks the process in CPU bound derivation for an effectively unbounded time, even though the file is not a valid SSH key.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you load a private key file from an untrusted source.
Background info
net-ssh is vulnerable to Denial of Service (DoS) in versions 0.0.1 - 7.3.4.
How to fix this
Upgrade the net-ssh library to the patch version.
Are You Affected?
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