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Petr Lautrbach |
94c6f8 |
diff --git a/openbsd-compat/port-linux-sshd.c b/openbsd-compat/port-linux-sshd.c
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Petr Lautrbach |
94c6f8 |
index c18524e..d04f4ed 100644
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Petr Lautrbach |
94c6f8 |
--- a/openbsd-compat/port-linux-sshd.c
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Petr Lautrbach |
94c6f8 |
+++ b/openbsd-compat/port-linux-sshd.c
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Jakub Jelen |
22a08c |
@@ -409,6 +409,28 @@ sshd_selinux_setup_exec_context(char *pwname)
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Petr Lautrbach |
94c6f8 |
debug3("%s: done", __func__);
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Petr Lautrbach |
afd52c |
}
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Petr Lautrbach |
afd52c |
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Petr Lautrbach |
afd52c |
+void
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Petr Lautrbach |
94c6f8 |
+sshd_selinux_copy_context(void)
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Petr Lautrbach |
afd52c |
+{
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bach |
dfa0cd |
+ security_context_t *ctx;
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Petr Lautrbach |
afd52c |
+
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Petr Lautrbach |
afd52c |
+ if (!ssh_selinux_enabled())
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Petr Lautrbach |
afd52c |
+ return;
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Petr Lautrbach |
afd52c |
+
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Petr Lautrbach |
afd52c |
+ if (getexeccon((security_context_t *)&ctx) != 0) {
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Petr Lautrbach |
afd52c |
+ logit("%s: getcon failed with %s", __func__, strerror (errno));
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Petr Lautrbach |
afd52c |
+ return;
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Petr Lautrbach |
afd52c |
+ }
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bach |
dfa0cd |
+ if (ctx != NULL) {
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Jakub Jelen |
22a08c |
+ /* unset exec context before we will lose this capabililty */
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Jakub Jelen |
22a08c |
+ if (setexeccon(NULL) != 0)
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Jakub Jelen |
22a08c |
+ fatal("%s: setexeccon failed with %s", __func__, strerror (errno));
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bach |
dfa0cd |
+ if (setcon(ctx) != 0)
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Jakub Jelen |
22a08c |
+ fatal("%s: setcon failed with %s", __func__, strerror (errno));
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bach |
dfa0cd |
+ freecon(ctx);
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bach |
dfa0cd |
+ }
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Petr Lautrbach |
afd52c |
+}
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Petr Lautrbach |
afd52c |
+
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Petr Lautrbach |
94c6f8 |
#endif
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Petr Lautrbach |
94c6f8 |
#endif
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Petr Lautrbach |
afd52c |
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Petr Lautrbach |
94c6f8 |
diff --git a/openbsd-compat/port-linux.h b/openbsd-compat/port-linux.h
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Petr Lautrbach |
94c6f8 |
index 8ef6cc4..b18893c 100644
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Petr Lautrbach |
94c6f8 |
--- a/openbsd-compat/port-linux.h
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Petr Lautrbach |
94c6f8 |
+++ b/openbsd-compat/port-linux.h
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Petr Lautrbach |
94c6f8 |
@@ -25,6 +25,7 @@ void ssh_selinux_setup_pty(char *, const char *);
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Petr Lautrbach |
afd52c |
void ssh_selinux_change_context(const char *);
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Petr Lautrbach |
afd52c |
void ssh_selinux_setfscreatecon(const char *);
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Petr Lautrbach |
94c6f8 |
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Petr Lautrbach |
94c6f8 |
+void sshd_selinux_copy_context(void);
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Petr Lautrbach |
94c6f8 |
void sshd_selinux_setup_exec_context(char *);
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Petr Lautrbach |
afd52c |
#endif
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Petr Lautrbach |
afd52c |
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Petr Lautrbach |
94c6f8 |
diff --git a/session.c b/session.c
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Petr Lautrbach |
94c6f8 |
index 2bcf818..b5dc144 100644
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Petr Lautrbach |
94c6f8 |
--- a/session.c
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Petr Lautrbach |
94c6f8 |
+++ b/session.c
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Petr Lautrbach |
94c6f8 |
@@ -1538,6 +1538,9 @@ do_setusercontext(struct passwd *pw)
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Petr Lautrbach |
f578f0 |
pw->pw_uid);
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Petr Lautrbach |
f578f0 |
chroot_path = percent_expand(tmp, "h", pw->pw_dir,
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Petr Lautrbach |
f578f0 |
"u", pw->pw_name, (char *)NULL);
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Petr Lautrbach |
f578f0 |
+#ifdef WITH_SELINUX
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Petr Lautrbach |
94c6f8 |
+ sshd_selinux_copy_context();
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Petr Lautrbach |
f578f0 |
+#endif
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Petr Lautrbach |
f578f0 |
safely_chroot(chroot_path, pw->pw_uid);
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Petr Lautrbach |
f578f0 |
free(tmp);
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Petr Lautrbach |
f578f0 |
free(chroot_path);
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Jakub Jelen |
22a08c |
@@ -1565,6 +1568,11 @@ do_setusercontext(struct passwd *pw)
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Petr Lautrbach |
f578f0 |
/* Permanently switch to the desired uid. */
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Petr Lautrbach |
f578f0 |
permanently_set_uid(pw);
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Petr Lautrbach |
f578f0 |
#endif
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Petr Lautrbach |
581bf3 |
+
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Petr Lautrbach |
0c438f |
+#ifdef WITH_SELINUX
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Jakub Jelen |
13073f |
+ if (in_chroot == 0)
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Petr Lautrbach |
94c6f8 |
+ sshd_selinux_copy_context();
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Petr Lautrbach |
0c438f |
+#endif
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Petr Lautrbach |
84822b |
} else if (options.chroot_directory != NULL &&
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Petr Lautrbach |
84822b |
strcasecmp(options.chroot_directory, "none") != 0) {
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Petr Lautrbach |
84822b |
fatal("server lacks privileges to chroot to ChrootDirectory");
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Jakub Jelen |
22a08c |
@@ -1588,9 +1588,6 @@ do_pwchange(Session *s)
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Jakub Jelen |
22a08c |
if (s->ttyfd != -1) {
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Jakub Jelen |
22a08c |
fprintf(stderr,
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Jakub Jelen |
22a08c |
"You must change your password now and login again!\n");
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Jakub Jelen |
22a08c |
-#ifdef WITH_SELINUX
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Jakub Jelen |
22a08c |
- setexeccon(NULL);
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Jakub Jelen |
22a08c |
-#endif
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Jakub Jelen |
22a08c |
#ifdef PASSWD_NEEDS_USERNAME
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Jakub Jelen |
22a08c |
execl(_PATH_PASSWD_PROG, "passwd", s->pw->pw_name,
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Jakub Jelen |
22a08c |
(char *)NULL);
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Petr Lautrbach |
94c6f8 |
@@ -1826,9 +1835,6 @@ do_child(Session *s, const char *command)
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Petr Lautrbach |
afd52c |
argv[i] = NULL;
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Petr Lautrbach |
afd52c |
optind = optreset = 1;
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Petr Lautrbach |
afd52c |
__progname = argv[0];
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Petr Lautrbach |
afd52c |
-#ifdef WITH_SELINUX
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Petr Lautrbach |
afd52c |
- ssh_selinux_change_context("sftpd_t");
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Petr Lautrbach |
afd52c |
-#endif
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Petr Lautrbach |
afd52c |
exit(sftp_server_main(i, argv, s->pw));
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Petr Lautrbach |
cd5891 |
}
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Petr Lautrbach |
cd5891 |
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Petr Lautrbach |
94c6f8 |
diff --git a/sshd.c b/sshd.c
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Petr Lautrbach |
94c6f8 |
index 07f9926..a97f8b7 100644
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Petr Lautrbach |
94c6f8 |
--- a/sshd.c
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Petr Lautrbach |
94c6f8 |
+++ b/sshd.c
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Petr Lautrbach |
94c6f8 |
@@ -632,6 +632,10 @@ privsep_preauth_child(void)
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Petr Lautrbach |
338e71 |
/* Demote the private keys to public keys. */
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Petr Lautrbach |
338e71 |
demote_sensitive_data();
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Petr Lautrbach |
338e71 |
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Petr Lautrbach |
338e71 |
+#ifdef WITH_SELINUX
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Petr Lautrbach |
338e71 |
+ ssh_selinux_change_context("sshd_net_t");
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Petr Lautrbach |
338e71 |
+#endif
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Petr Lautrbach |
338e71 |
+
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Jakub Jelen |
13073f |
/* Demote the child */
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Jakub Jelen |
13073f |
if (getuid() == 0 || geteuid() == 0) {
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Jakub Jelen |
13073f |
/* Change our root directory */
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Jakub Jelen |
0ebe96 |
@@ -755,6 +755,9 @@ privsep_postauth(Authctxt *authctxt)
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Petr Lautrbach |
0c438f |
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Jakub Jelen |
0ebe96 |
#ifdef DISABLE_FD_PASSING
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Jakub Jelen |
0ebe96 |
if (1) {
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Jakub Jelen |
0ebe96 |
+#elif defined(WITH_SELINUX)
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Jakub Jelen |
0ebe96 |
+ if (options.use_login) {
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Jakub Jelen |
0ebe96 |
+ /* even root user can be confined by SELinux */
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Jakub Jelen |
0ebe96 |
#else
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Jakub Jelen |
0ebe96 |
if (authctxt->pw->pw_uid == 0 || options.use_login) {
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Jakub Jelen |
0ebe96 |
#endif
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Jakub Jelen |
b6d4dc |
diff --git a/session.c b/session.c
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Jakub Jelen |
b6d4dc |
index 684f867..09048bc 100644
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Jakub Jelen |
b6d4dc |
--- a/session.c
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Jakub Jelen |
b6d4dc |
+++ b/session.c
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Jakub Jelen |
b6d4dc |
@@ -1538,7 +1538,7 @@ do_setusercontext(struct passwd *pw)
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Jakub Jelen |
b6d4dc |
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Jakub Jelen |
b6d4dc |
platform_setusercontext(pw);
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Jakub Jelen |
b6d4dc |
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Jakub Jelen |
b6d4dc |
- if (platform_privileged_uidswap()) {
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Jakub Jelen |
4fdc3c |
+ if (platform_privileged_uidswap() && (!is_child || !use_privsep)) {
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Jakub Jelen |
b6d4dc |
#ifdef HAVE_LOGIN_CAP
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Jakub Jelen |
b6d4dc |
if (setusercontext(lc, pw, pw->pw_uid,
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Jakub Jelen |
b6d4dc |
(LOGIN_SETALL & ~(LOGIN_SETPATH|LOGIN_SETUSER))) < 0) {
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