[gentoo-commits] proj/hardened-refpolicy:master commit in: policy/modules/services/

["Sven Vermeulen" <swift@gentoo.org>]

commit:     66bb200d47dcfa85b39c491171b4f3a6a4f341ed
Author:     Sven Vermeulen <sven.vermeulen <AT> siphos <DOT> be>
AuthorDate: Wed Mar  4 16:42:33 2015 +0000
Commit:     Sven Vermeulen <swift <AT> gentoo <DOT> org>
CommitDate: Wed Mar  4 16:42:33 2015 +0000
URL:        http://sources.gentoo.org/gitweb/?p=proj/hardened-refpolicy.git;a=commit;h=66bb200d

Support SSH agent forwarding

When using SSH agent forwarding, the SSH daemon creates the necessary
sockets somewhere in a random /tmp/ssh-* location. These sockets get the
sshd_tmp_t type associated.

Currently, the SSH client (running as ssh_t) does not have any
privileges on sshd_tmp_t *socket* files, but it has manage rights on the
*regular* files. This means that any attempt to make use of the agent
forwarding (i.e. from the logged-in server, attempt to SSH to another
server while using the SSH agent running on the users' workstation) will
fail.

By granting rw_socket_file_perms permissions to ssh_t against the
sshd_tmp_t socket files, agent forwarding is working well.

X-Gentoo-Bug: 529336
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=529336

 policy/modules/services/ssh.te | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/policy/modules/services/ssh.te b/policy/modules/services/ssh.te
index 147888c..b63f585 100644
--- a/policy/modules/services/ssh.te
+++ b/policy/modules/services/ssh.te
@@ -358,3 +358,8 @@ optional_policy(`
 optional_policy(`
 	udev_read_db(ssh_keygen_t)
 ')
+
+ifdef(`distro_gentoo',`
+	# Fix bug #529336 - Allow ssh_t to read/write sshd_tmp_t sockets (ssh agent forwarding)
+	allow ssh_t sshd_tmp_t:sock_file rw_sock_file_perms;
+')