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  • Committer: Teddy Hogeborn
  • Date: 2024-11-15 11:02:39 UTC
  • Revision ID: teddy@recompile.se-20241115110239-1t2yh76c1ap7wlmm
mandos-keygen: Avoid comment lines from ssh-keyscan

In ssh-keyscan from OpenSSH 9.8, comment lines containing the hostname
and SSH protocol banner are emitted by to standard output.  Avoid this
by passing the "-q" (quiet) option to ssh-keyscan.

mandos-keygen: When scanning localhost for keys, try to run
"ssh-keyscan" both with and without the "-q" option.  If the "-q"
option worked, use the option also in the generated checker command.

Reported-By: bb <bb@tsufeki.eu>
Thanks: bb <bb@tsufeki.eu> for analysis

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Lines of Context:
debian/mandos.postinst
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# If prerm fails during replacement due to conflict:
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#       <postinst> abort-remove in-favour <new-package> <version>
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. /usr/share/debconf/confmodule
 
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set -e
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case "$1" in
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                *:Mandos\ password\ system,,,:/nonexistent:/bin/false)
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                    usermod --login _mandos mandos
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                    groupmod --new-name _mandos mandos
 
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                    # Reload D-Bus daemon to be aware of the _mandos
 
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                    # user & group
 
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                    if [ -x /etc/init.d/dbus ]; then
 
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                        invoke-rc.d dbus force-reload || :
 
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                    fi
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                    ;;
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            esac
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        fi
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                --home /nonexistent --no-create-home --group \
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                --disabled-password --gecos "Mandos password system" \
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                _mandos
 
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            # Reload D-Bus daemon to be aware of the _mandos user &
 
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            # group
 
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            if [ -x /etc/init.d/dbus ]; then
 
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                invoke-rc.d dbus force-reload || :
 
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            fi
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        elif dpkg --compare-versions "$2" eq 1.7.4-1 \
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                || dpkg --compare-versions "$2" eq "1.7.4-1~bpo8+1"
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        then
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                invoke-rc.d mandos start
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            fi
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        fi
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        chown _mandos:_mandos /var/lib/mandos
 
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        if ! dpkg-statoverride --list "/var/lib/mandos" >/dev/null \
 
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             2>&1; then
 
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            chown _mandos:_mandos /var/lib/mandos
 
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            chmod u=rwx,go= /var/lib/mandos
 
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        fi
 
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        if dpkg --compare-versions "$2" eq "1.8.0-1" \
 
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                || dpkg --compare-versions "$2" eq "1.8.0-1~bpo9+1"; then
 
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            if grep --quiet --regexp='^[[:space:]]*key_id[[:space:]]*=[[:space:]]*[Ee]3[Bb]0[Cc]44298[Ff][Cc]1[Cc]149[Aa][Ff][Bb][Ff]4[Cc]8996[Ff][Bb]92427[Aa][Ee]41[Ee]4649[Bb]934[Cc][Aa]495991[Bb]7852[Bb]855[[:space:]]*$' /etc/mandos/clients.conf; then
 
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                sed --in-place \
 
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                    --expression='/^[[:space:]]*key_id[[:space:]]*=[[:space:]]*[Ee]3[Bb]0[Cc]44298[Ff][Cc]1[Cc]149[Aa][Ff][Bb][Ff]4[Cc]8996[Ff][Bb]92427[Aa][Ee]41[Ee]4649[Bb]934[Cc][Aa]495991[Bb]7852[Bb]855[[:space:]]*$/d' \
 
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                    /etc/mandos/clients.conf
 
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                invoke-rc.d mandos restart
 
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                db_version 2.0
 
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                db_fset mandos/removed_bad_key_ids seen false
 
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                db_reset mandos/removed_bad_key_ids
 
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                db_input critical mandos/removed_bad_key_ids || true
 
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                db_go
 
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                db_stop
 
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            fi
 
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        fi
 
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        gnutls_version=$(dpkg-query --showformat='${Version}' \
 
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                                    --show libgnutls30 \
 
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                                    2>/dev/null || :)
 
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        if [ -n "$gnutls_version" ] \
 
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               && dpkg --compare-versions $gnutls_version ge 3.6.6; then
 
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            db_version 2.0
 
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            db_input critical mandos/key_id || true
 
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            db_go
 
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            db_stop
 
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        fi
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        ;;
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    abort-upgrade|abort-deconfigure|abort-remove)