Package: openssh-server
Version: 1:5.1p1-5
Severity: normal
It does not seem as if, when specifying multiple 'Match' blocks, the block's
arguments are terminated at the beginning of the next 'Match' block.
In the below example, I have one group of users who are permitted only access
to the Squid proxy server and one group of users who are permitted access to
all forwards (so as to be able to connect to other services only running
locally on server):
in /etc/sshd_config:
# Default settings for any ssh users
X11Forwarding no
AllowTcpForwarding no
# Settings for users matching those permitted to use TCP Forwarding
Match Group AllowTCPForward
AllowTCPForwarding yes
X11Forwarding yes
# Match only those who are permitted to use Squid
Match Group AllowSquidProxy
AllowTCPForwarding yes
X11Forwarding no
PermitOpen 127.0.0.1:3128
Following the above configuration settings restricts port forwarding as
intended, but does not restrict X11Forwarding as it should. 'AllowSquidProxy'
users ARE ALLOWED to use X11Forwarding.
Additionally, as an 'experiment', specifying differing 'Banner' options does
not result in the intended banners displaying upon users from differing groups
attempting to log in.
-- System Information:
Debian Release: 5.0.8
APT prefers oldstable
APT policy: (500, 'oldstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.26-2-686 (SMP w/1 CPU core)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages openssh-server depends on:
ii adduser 3.110 add and remove users and groups
ii debconf [debcon 1.5.24 Debian configuration management sy
ii dpkg 1.14.31 Debian package management system
ii libc6 2.7-18lenny7 GNU C Library: Shared libraries
ii libcomerr2 1.41.3-1 common error description library
ii libkrb53 1.6.dfsg.4~beta1-5lenny6 MIT Kerberos runtime libraries
ii libpam-modules 1.0.1-5+lenny1 Pluggable Authentication Modules f
ii libpam-runtime 1.0.1-5+lenny1 Runtime support for the PAM librar
ii libpam0g 1.0.1-5+lenny1 Pluggable Authentication Modules l
ii libselinux1 2.0.65-5 SELinux shared libraries
ii libssl0.9.8 0.9.8g-15+lenny11 SSL shared libraries
ii libwrap0 7.6.q-16 Wietse Venema's TCP wrappers libra
ii lsb-base 3.2-20 Linux Standard Base 3.2 init scrip
ii openssh-blackli 0.4.1 list of default blacklisted OpenSS
ii openssh-client 1:5.1p1-5 secure shell client, an rlogin/rsh
ii procps 1:3.2.7-11 /proc file system utilities
ii zlib1g 1:1.2.3.3.dfsg-12 compression library - runtime
Versions of packages openssh-server recommends:
ii openssh-blacklist-extra 0.4.1 list of non-default blacklisted Op
ii xauth 1:1.0.3-2 X authentication utility
Versions of packages openssh-server suggests:
pn molly-guard <none> (no description available)
pn rssh <none> (no description available)
pn ssh-askpass <none> (no description available)
-- debconf information:
ssh/vulnerable_host_keys:
ssh/new_config: true
* ssh/use_old_init_script: true
ssh/disable_cr_auth: false
ssh/encrypted_host_key_but_no_keygen:
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