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Merge pull request #307 from maybebyte/ssh-agent-to-allowlist

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fix(permission-hardener): ssh-agent gets 2755 perms
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Patrick Schleizer 2025-05-28 07:21:31 -04:00 • committed by GitHub
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8
usr/lib/permission-hardener.d/25_default_whitelist_ssh.conf
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@ -5,11 +5,17 @@
## "/usr/local/etc/permission-hardener.d/20_user.conf" for your custom
## configuration. When security-misc is updated, this file may be overwritten.
## Used for SSH client key management
## https://manpages.debian.org/bookworm/openssh-client/ssh-agent.1.en.html
## Debian installs ssh-agent with setgid permissions (2755) and with
## _ssh as the group to help mitigate ptrace attacks that could extract
## private keys from the agent's memory.
ssh-agent matchwhitelist
## Used only for SSH host-based authentication
## https://linux.die.net/man/8/ssh-keysign
## Needed to allow access to the machine's host key for use in the
## authentication process. This is a non-default method of authenticating to
## SSH, and is likely rarely used, thus this should be safe to disable.
#ssh-agent matchwhitelist
#ssh-keysign matchwhitelist
#/usr/lib/openssh matchwhitelist