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Add CHROOT and CWD sudoers options.

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Also matching runchroot and runcwd Defaults settings.
This commit is contained in:
Todd C. Miller
2020-09-01 06:26:00 -06:00
parent c4a579cf8a
commit 6bdfd010d2
35 changed files with 3189 additions and 2162 deletions
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1
MANIFEST
View File

@@ -471,6 +471,7 @@ plugins/sudoers/digestname.c
plugins/sudoers/editor.c
plugins/sudoers/env.c
plugins/sudoers/env_pattern.c
plugins/sudoers/exptilde.c
plugins/sudoers/file.c
plugins/sudoers/filedigest.c
plugins/sudoers/find_path.c

74
doc/sudoers.man.in
View File

@@ -25,7 +25,7 @@
.nr BA @BAMAN@
.nr LC @LCMAN@
.nr PS @PSMAN@
.TH "SUDOERS" "@mansectform@" "August 27, 2020" "Sudo @PACKAGE_VERSION@" "File Formats Manual"
.TH "SUDOERS" "@mansectform@" "August 28, 2020" "Sudo @PACKAGE_VERSION@" "File Formats Manual"
.nh
.if n .ad l
.SH "NAME"
@@ -1163,6 +1163,10 @@ Date_Spec ::= ('NOTBEFORE=timestamp' | 'NOTAFTER=timestamp')
Timeout_Spec ::= 'TIMEOUT=timeout'
Chdir_Spec ::= 'CWD=directory'
Chroot_Spec ::= 'CHROOT=directory'
Tag_Spec ::= ('EXEC:' | 'NOEXEC:' | 'FOLLOW:' | 'NOFOLLOW' |
'LOG_INPUT:' | 'NOLOG_INPUT:' | 'LOG_OUTPUT:' |
'NOLOG_OUTPUT:' | 'MAIL:' | 'NOMAIL:' | 'PASSWD:' |
@@ -1502,6 +1506,54 @@ timeout values:
\fR1d2d3h\fR.
.PP
This setting is only supported by version 1.8.20 or higher.
.SS "Chdir_Spec"
The working directory that the command will be run in can be specified
using the
\fRCWD\fR
setting.
The
\fIdirectory\fR
must be a fully-qualified path name beginning with a
\(oq/\(cq
or
\(oq~\(cq
character.
By default, commands are run from the invoking user's current working
directory, unless the
\fB\-i\fR
option is given.
Path names of the form
\fR~user/path/name\fR
are interpreted as being relative to the named user's home directory.
If the user name is omitted, the path will be relative to the runas
user's home directory.
.PP
This setting is only supported by version 1.9.3 or higher.
.SS "Chroot_Spec"
The root directory that the command will be run in can be specified
using the
\fRCHROOT\fR
setting.
The
\fIdirectory\fR
must be a fully-qualified path name beginning with a
\(oq/\(cq
or
\(oq~\(cq
character.
This setting can be used to run the command in a
chroot(2)
\(lqsandbox\(rq
similar to the
chroot(@mansectsu@)
utility.
Path names of the form
\fR~user/path/name\fR
are interpreted as being relative to the named user's home directory.
If the user name is omitted, the path will be relative to the runas
user's home directory.
.PP
This setting is only supported by version 1.9.3 or higher.
.SS "Tag_Spec"
A command may have zero or more tags associated with it.
The following tag values are supported:
@@ -4399,6 +4451,26 @@ In either case, the contents of
are processed before the contents of
\fIenv_file\fR.
.TP 14n
runchroot
If set,
\fBsudo\fR
will use this value for the root directory when running a command.
See the
\fIChroot_Spec\fR
section for more details.
.sp
This setting is only supported by version 1.9.3 or higher.
.TP 14n
runcwd
If set,
\fBsudo\fR
will use this value for the working directory when running a command.
See the
\fIChdir_Spec\fR
section for more details.
.sp
This setting is only supported by version 1.9.3 or higher.
.TP 14n
secure_path
If set,
\fBsudo\fR

80
doc/sudoers.mdoc.in
View File

@@ -24,7 +24,7 @@
.nr BA @BAMAN@
.nr LC @LCMAN@
.nr PS @PSMAN@
.Dd August 27, 2020
.Dd August 28, 2020
.Dt SUDOERS @mansectform@
.Os Sudo @PACKAGE_VERSION@
.Sh NAME
@@ -1096,12 +1096,12 @@ Cmnd_Spec ::= Runas_Spec? Option_Spec* Tag_Spec* Cmnd
Runas_Spec ::= '(' Runas_List? (':' Runas_List)? ')'
.ie \n(SL \{\
.ie \n(PS Option_Spec ::= (SELinux_Spec | Solaris_Priv_Spec | Date_Spec | Timeout_Spec)
.el Option_Spec ::= (SELinux_Spec | Date_Spec | Timeout_Spec)
.ie \n(PS Option_Spec ::= (SELinux_Spec | Solaris_Priv_Spec | Date_Spec | Timeout_Spec | Chdir_Spec | Chroot_Spec)
.el Option_Spec ::= (SELinux_Spec | Date_Spec | Timeout_Spec | Chdir_Spec | Chroot_Spec)
.\}
.el \{\
.ie \n(PS Option_Spec ::= (Solaris_Priv_Spec | Date_Spec | Timeout_Spec)
.el Option_Spec ::= (Date_Spec | Timeout_Spec)
.ie \n(PS Option_Spec ::= (Solaris_Priv_Spec | Date_Spec | Timeout_Spec | Chdir_Spec | Chroot_Spec)
.el Option_Spec ::= (Date_Spec | Timeout_Spec | Chdir_Spec | Chroot_Spec)
.\}
.if \n(SL \{\
@@ -1116,6 +1116,10 @@ Date_Spec ::= ('NOTBEFORE=timestamp' | 'NOTAFTER=timestamp')
Timeout_Spec ::= 'TIMEOUT=timeout'
Chdir_Spec ::= 'CWD=directory'
Chroot_Spec ::= 'CHROOT=directory'
Tag_Spec ::= ('EXEC:' | 'NOEXEC:' | 'FOLLOW:' | 'NOFOLLOW' |
'LOG_INPUT:' | 'NOLOG_INPUT:' | 'LOG_OUTPUT:' |
'NOLOG_OUTPUT:' | 'MAIL:' | 'NOMAIL:' | 'PASSWD:' |
@@ -1422,6 +1426,54 @@ timeout values:
.Li 1d2d3h .
.Pp
This setting is only supported by version 1.8.20 or higher.
.Ss Chdir_Spec
The working directory that the command will be run in can be specified
using the
.Li CWD
setting.
The
.Fa directory
must be a fully-qualified path name beginning with a
.Sq /
or
.Sq ~
character.
By default, commands are run from the invoking user's current working
directory, unless the
.Fl i
option is given.
Path names of the form
.Li ~user/path/name
are interpreted as being relative to the named user's home directory.
If the user name is omitted, the path will be relative to the runas
user's home directory.
.Pp
This setting is only supported by version 1.9.3 or higher.
.Ss Chroot_Spec
The root directory that the command will be run in can be specified
using the
.Li CHROOT
setting.
The
.Fa directory
must be a fully-qualified path name beginning with a
.Sq /
or
.Sq ~
character.
This setting can be used to run the command in a
.Xr chroot 2
.Dq sandbox
similar to the
.Xr chroot @mansectsu@
utility.
Path names of the form
.Li ~user/path/name
are interpreted as being relative to the named user's home directory.
If the user name is omitted, the path will be relative to the runas
user's home directory.
.Pp
This setting is only supported by version 1.9.3 or higher.
.Ss Tag_Spec
A command may have zero or more tags associated with it.
The following tag values are supported:
@@ -4110,6 +4162,24 @@ In either case, the contents of
.Em restricted_env_file
are processed before the contents of
.Em env_file .
.It runchroot
If set,
.Nm sudo
will use this value for the root directory when running a command.
See the
.Sx Chroot_Spec
section for more details.
.Pp
This setting is only supported by version 1.9.3 or higher.
.It runcwd
If set,
.Nm sudo
will use this value for the working directory when running a command.
See the
.Sx Chdir_Spec
section for more details.
.Pp
This setting is only supported by version 1.9.3 or higher.
.It secure_path
If set,
.Nm sudo

32
plugins/sudoers/Makefile.in
View File

@@ -159,11 +159,11 @@ TEST_PROGS = check_addr check_base64 check_digest check_env_pattern check_fill \
AUTH_OBJS = sudo_auth.lo @AUTH_OBJS@
LIBPARSESUDOERS_OBJS = alias.lo audit.lo base64.lo defaults.lo digestname.lo \
filedigest.lo gentime.lo gmtoff.lo gram.lo hexchar.lo \
match.lo match_addr.lo match_command.lo match_digest.lo \
pwutil.lo pwutil_impl.lo rcstr.lo redblack.lo \
strlist.lo sudoers_debug.lo timeout.lo timestr.lo \
toke.lo toke_util.lo
exptilde.lo filedigest.lo gentime.lo gmtoff.lo gram.lo \
hexchar.lo match.lo match_addr.lo match_command.lo \
match_digest.lo pwutil.lo pwutil_impl.lo rcstr.lo \
redblack.lo strlist.lo sudoers_debug.lo timeout.lo \
timestr.lo toke.lo toke_util.lo
LIBPARSESUDOERS_IOBJS = $(LIBPARSESUDOERS_OBJS:.lo=.i) passwd.i
@@ -1217,6 +1217,28 @@ env_pattern.i: $(srcdir)/env_pattern.c $(devdir)/def_data.h \
$(CC) -E -o $@ $(CPPFLAGS) $<
env_pattern.plog: env_pattern.i
rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/env_pattern.c --i-file $< --output-file $@
exptilde.lo: $(srcdir)/exptilde.c $(devdir)/def_data.h \
$(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
$(incdir)/sudo_conf.h $(incdir)/sudo_debug.h \
$(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
$(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
$(incdir)/sudo_util.h $(srcdir)/defaults.h $(srcdir)/logging.h \
$(srcdir)/parse.h $(srcdir)/pwutil.h $(srcdir)/sudo_nss.h \
$(srcdir)/sudoers.h $(srcdir)/sudoers_debug.h \
$(top_builddir)/config.h $(top_builddir)/pathnames.h
$(LIBTOOL) $(LTFLAGS) --mode=compile $(CC) -c $(CPPFLAGS) $(CFLAGS) $(ASAN_CFLAGS) $(PIE_CFLAGS) $(SSP_CFLAGS) $(srcdir)/exptilde.c
exptilde.i: $(srcdir)/exptilde.c $(devdir)/def_data.h \
$(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
$(incdir)/sudo_conf.h $(incdir)/sudo_debug.h \
$(incdir)/sudo_fatal.h $(incdir)/sudo_gettext.h \
$(incdir)/sudo_plugin.h $(incdir)/sudo_queue.h \
$(incdir)/sudo_util.h $(srcdir)/defaults.h $(srcdir)/logging.h \
$(srcdir)/parse.h $(srcdir)/pwutil.h $(srcdir)/sudo_nss.h \
$(srcdir)/sudoers.h $(srcdir)/sudoers_debug.h \
$(top_builddir)/config.h $(top_builddir)/pathnames.h
$(CC) -E -o $@ $(CPPFLAGS) $<
exptilde.plog: exptilde.i
rm -f $@; pvs-studio --cfg $(PVS_CFG) --sourcetree-root $(top_srcdir) --skip-cl-exe yes --source-file $(srcdir)/exptilde.c --i-file $< --output-file $@
file.lo: $(srcdir)/file.c $(devdir)/def_data.h $(devdir)/gram.h \
$(incdir)/compat/stdbool.h $(incdir)/sudo_compat.h \
$(incdir)/sudo_conf.h $(incdir)/sudo_debug.h $(incdir)/sudo_fatal.h \

8
plugins/sudoers/def_data.c
View File

@@ -551,6 +551,14 @@ struct sudo_defs_types sudo_defs_table[] = {
"pam_rhost", T_FLAG,
N_("Set the pam remote host to the local host name"),
NULL,
}, {
"runcwd", T_STR|T_BOOL|T_PATH|T_TILDE,
N_("Working directory to change to before executing the command: %s"),
NULL,
}, {
"runchroot", T_STR|T_BOOL|T_PATH|T_TILDE,
N_("Root directory to change to before executing the command: %s"),
NULL,
}, {
NULL, 0, NULL
}

4
plugins/sudoers/def_data.h
View File

@@ -256,6 +256,10 @@
#define def_pam_ruser (sudo_defs_table[I_PAM_RUSER].sd_un.flag)
#define I_PAM_RHOST 127
#define def_pam_rhost (sudo_defs_table[I_PAM_RHOST].sd_un.flag)
#define I_RUNCWD 128
#define def_runcwd (sudo_defs_table[I_RUNCWD].sd_un.str)
#define I_RUNCHROOT 129
#define def_runchroot (sudo_defs_table[I_RUNCHROOT].sd_un.str)
enum def_tuple {
never,

6
plugins/sudoers/def_data.in
View File

@@ -399,3 +399,9 @@ pam_ruser
pam_rhost
T_FLAG
"Set the pam remote host to the local host name"
runcwd
T_STR|T_BOOL|T_PATH|T_TILDE
"Working directory to change to before executing the command: %s"
runchroot
T_STR|T_BOOL|T_PATH|T_TILDE
"Root directory to change to before executing the command: %s"

3
plugins/sudoers/defaults.c
View File

@@ -249,7 +249,8 @@ parse_default_entry(struct sudo_defs_types *def, const char *val, int op,
rc = store_syslogpri(val, &def->sd_un);
break;
case T_STR:
if (ISSET(def->type, T_PATH) && val != NULL && *val != '/') {
if (ISSET(def->type, T_PATH) && val != NULL && *val != '/' &&
(!ISSET(def->type, T_TILDE) || *val != '~')) {
if (!quiet) {
if (lineno > 0) {
sudo_warnx(U_("%s:%d: values for \"%s\" must start with a '/'"),

4
plugins/sudoers/defaults.h
View File

@@ -1,7 +1,7 @@
/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 1999-2005, 2008-2018
* Copyright (c) 1999-2005, 2008-2020
* Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
@@ -111,6 +111,8 @@ struct early_default {
#define T_BOOL 0x100
#undef T_PATH
#define T_PATH 0x200
#undef T_TILDE
#define T_TILDE 0x400
/*
* Argument to update_defaults()

100
plugins/sudoers/exptilde.c Normal file
View File

@@ -0,0 +1,100 @@
/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2020 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This is an open source non-commercial project. Dear PVS-Studio, please check it.
* PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <grp.h>
#include <pwd.h>
#include "sudoers.h"
#include "pwutil.h"
/*
* Expand leading tilde in *path, which must be dynamically allocated.
* Replaces path with the expanded version as needed, freeing the old one.
* Returns true on success, false on failure.
*/
bool
expand_tilde(char **path, const char *user)
{
char *npath, *opath = *path;
char *slash = NULL;
struct passwd *pw;
int len;
debug_decl(expand_tilde, SUDOERS_DEBUG_UTIL);
switch (*opath++) {
case '/':
/* A fully-qualified path, nothing to do. */
debug_return_bool(true);
case '~':
/* See below. */
break;
default:
/* Not a fully-qualified path or one that starts with a tilde. */
debug_return_bool(false);
}
switch (*opath) {
case '\0':
/* format: ~ */
break;
case '/':
/* format: ~/foo */
opath++;
break;
default:
/* format: ~user/foo */
user = opath;
slash = strchr(opath, '/');
if (slash != NULL) {
*slash = '\0';
opath = slash + 1;
} else {
opath = NULL;
}
}
pw = sudo_getpwnam(user);
if (slash != NULL)
*slash = '/';
if (pw == NULL) {
/* Unknown user. */
sudo_warnx(U_("unknown user: %s"), user);
debug_return_bool(false);
}
len = asprintf(&npath, "%s%s%s", pw->pw_dir, opath ? "/" : "",
opath ? opath : "");
sudo_pw_delref(pw);
if (len == -1) {
sudo_warnx(U_("%s: %s"), __func__, U_("unable to allocate memory"));
debug_return_bool(false);
}
free(*path);
*path = npath;
debug_return_bool(true);
}

699
plugins/sudoers/gram.c
View File

File diff suppressed because it is too large Load Diff

26
plugins/sudoers/gram.h
View File

@@ -35,18 +35,20 @@
#define RUNASALIAS 290
#define ERROR 291
#define NOMATCH 292
#define TYPE 293
#define ROLE 294
#define PRIVS 295
#define LIMITPRIVS 296
#define CMND_TIMEOUT 297
#define NOTBEFORE 298
#define NOTAFTER 299
#define MYSELF 300
#define SHA224_TOK 301
#define SHA256_TOK 302
#define SHA384_TOK 303
#define SHA512_TOK 304
#define CHROOT 293
#define CWD 294
#define TYPE 295
#define ROLE 296
#define PRIVS 297
#define LIMITPRIVS 298
#define CMND_TIMEOUT 299
#define NOTBEFORE 300
#define NOTAFTER 301
#define MYSELF 302
#define SHA224_TOK 303
#define SHA256_TOK 304
#define SHA384_TOK 305
#define SHA512_TOK 306
#ifndef YYSTYPE_DEFINED
#define YYSTYPE_DEFINED
typedef union {

40
plugins/sudoers/gram.y
View File

@@ -129,6 +129,8 @@ static struct command_digest *new_digest(int, char *);
%token <tok> '\n' /* newline (with optional comment) */
%token <tok> ERROR /* error from lexer */
%token <tok> NOMATCH /* no match from lexer */
%token <tok> CHROOT /* root directory for command */
%token <tok> CWD /* working directory for command */
%token <tok> TYPE /* SELinux type */
%token <tok> ROLE /* SELinux role */
%token <tok> PRIVS /* Solaris privileges */
@@ -165,6 +167,8 @@ static struct command_digest *new_digest(int, char *);
%type <privilege> privileges
%type <tag> cmndtag
%type <options> options
%type <string> chdirspec
%type <string> chrootspec
%type <string> rolespec
%type <string> typespec
%type <string> privsspec
@@ -388,6 +392,12 @@ cmndspeclist : cmndspec
struct cmndspec *prev;
prev = HLTQ_LAST($1, cmndspec, entries);
HLTQ_CONCAT($1, $3, entries);
/* propagate runcwd and runchroot */
if ($3->runcwd == NULL)
$3->runcwd = prev->runcwd;
if ($3->runchroot == NULL)
$3->runchroot = prev->runchroot;
#ifdef HAVE_SELINUX
/* propagate role and type */
if ($3->role == NULL && $3->type == NULL) {
@@ -479,6 +489,8 @@ cmndspec : runasspec options cmndtag digcmnd {
cs->notbefore = $2.notbefore;
cs->notafter = $2.notafter;
cs->timeout = $2.timeout;
cs->runcwd = $2.runcwd;
cs->runchroot = $2.runchroot;
cs->tags = $3;
cs->cmnd = $4;
HLTQ_INIT(cs, entries);
@@ -561,6 +573,16 @@ opcmnd : cmnd {
}
;
chdirspec : CWD '=' WORD {
$$ = $3;
}
;
chrootspec : CHROOT '=' WORD {
$$ = $3;
}
;
timeoutspec : CMND_TIMEOUT '=' WORD {
$$ = $3;
}
@@ -664,6 +686,14 @@ runaslist : /* empty */ {
options : /* empty */ {
init_options(&$$);
}
| options chdirspec {
free($$.runcwd);
$$.runcwd = $2;
}
| options chrootspec {
free($$.runchroot);
$$.runchroot = $2;
}
| options notbeforespec {
$$.notbefore = parse_gentime($2);
free($2);
@@ -1260,6 +1290,7 @@ free_privilege(struct privilege *priv)
struct member_list *prev_binding = NULL;
struct cmndspec *cs;
struct defaults *def;
char *runcwd = NULL, *runchroot = NULL;
#ifdef HAVE_SELINUX
char *role = NULL, *type = NULL;
#endif /* HAVE_SELINUX */
@@ -1272,6 +1303,15 @@ free_privilege(struct privilege *priv)
free_members(&priv->hostlist);
while ((cs = TAILQ_FIRST(&priv->cmndlist)) != NULL) {
TAILQ_REMOVE(&priv->cmndlist, cs, entries);
/* Only free the first instance of runcwd/runchroot. */
if (cs->runcwd != runcwd) {
runcwd = cs->runcwd;
free(cs->runcwd);
}
if (cs->runchroot != runchroot) {
runcwd = cs->runchroot;
free(cs->runchroot);
}
#ifdef HAVE_SELINUX
/* Only free the first instance of a role/type. */
if (cs->role != role) {

18
plugins/sudoers/parse.c
View File

@@ -239,6 +239,24 @@ apply_cmndspec(struct cmndspec *cs)
#endif /* HAVE_PRIV_SET */
if (cs->timeout > 0)
def_command_timeout = cs->timeout;
if (cs->runcwd != NULL) {
free(def_runcwd);
def_runcwd = strdup(cs->runcwd);
if (def_runcwd == NULL) {
sudo_warnx(U_("%s: %s"), __func__,
U_("unable to allocate memory"));
debug_return_bool(false);
}
}
if (cs->runchroot != NULL) {
free(def_runchroot);
def_runchroot = strdup(cs->runchroot);
if (def_runchroot == NULL) {
sudo_warnx(U_("%s: %s"), __func__,
U_("unable to allocate memory"));
debug_return_bool(false);
}
}
if (cs->tags.nopasswd != UNSPEC)
def_authenticate = !cs->tags.nopasswd;
if (cs->tags.noexec != UNSPEC)

4
plugins/sudoers/parse.h
View File

@@ -131,6 +131,8 @@ struct command_options {
time_t notbefore; /* time restriction */
time_t notafter; /* time restriction */
int timeout; /* command timeout */
char *runcwd; /* working directory */
char *runchroot; /* root directory */
#ifdef HAVE_SELINUX
char *role, *type; /* SELinux role and type */
#endif
@@ -211,6 +213,8 @@ struct cmndspec {
int timeout; /* command timeout */
time_t notbefore; /* time restriction */
time_t notafter; /* time restriction */
char *runcwd; /* working directory */
char *runchroot; /* root directory */
#ifdef HAVE_SELINUX
char *role, *type; /* SELinux role and type */
#endif

22
plugins/sudoers/policy.c
View File

@@ -1,7 +1,7 @@
/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2010-2017 Todd C. Miller <Todd.Miller@sudo.ws>
* Copyright (c) 2010-2020 Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -567,7 +567,7 @@ sudoers_policy_exec_setup(char *argv[], char *envp[], mode_t cmnd_umask,
debug_return_bool(true); /* nothing to do */
/* Increase the length of command_info as needed, it is *not* checked. */
command_info = calloc(54, sizeof(char *));
command_info = calloc(55, sizeof(char *));
if (command_info == NULL)
goto oom;
@@ -618,7 +618,15 @@ sudoers_policy_exec_setup(char *argv[], char *envp[], mode_t cmnd_umask,
goto oom;
}
}
if (ISSET(sudo_mode, MODE_LOGIN_SHELL)) {
if (def_runcwd) {
/* Set cwd to explicit value in sudoers. */
if (!expand_tilde(&def_runcwd, runas_pw->pw_name)) {
sudo_warnx(U_("invalid working directory: %s"), def_runcwd);
goto bad;
}
if ((command_info[info_len++] = sudo_new_key_val("cwd", def_runcwd)) == NULL)
goto oom;
} else if (ISSET(sudo_mode, MODE_LOGIN_SHELL)) {
/* Set cwd to run user's homedir. */
if ((command_info[info_len++] = sudo_new_key_val("cwd", runas_pw->pw_dir)) == NULL)
goto oom;
@@ -779,6 +787,14 @@ sudoers_policy_exec_setup(char *argv[], char *envp[], mode_t cmnd_umask,
if (asprintf(&command_info[info_len++], "timeout=%u", timeout) == -1)
goto oom;
}
if (def_runchroot != NULL) {
if (!expand_tilde(&def_runchroot, runas_pw->pw_name)) {
sudo_warnx(U_("invalid chroot directory: %s"), def_runchroot);
goto bad;
}
if ((command_info[info_len++] = sudo_new_key_val("chroot", def_runchroot)) == NULL)
goto oom;
}
if (cmnd_umask != ACCESSPERMS) {
if (asprintf(&command_info[info_len++], "umask=0%o", (unsigned int)cmnd_umask) == -1)
goto oom;

8
plugins/sudoers/regress/sudoers/test1.toke.ok
View File

@@ -2,7 +2,7 @@
#
#
#
WORD(5) ALL = LOG_INPUT LOG_OUTPUT COMMAND ARG : ALL = NOLOG_INPUT NOLOG_OUTPUT COMMAND
WORD(5) ALL = NOPASSWD NOEXEC SETENV COMMAND : ALL = PASSWD EXEC NOSETENV COMMAND
WORD(5) ALL = MAIL COMMAND : ALL = NOMAIL COMMAND
WORD(5) ALL = FOLLOW COMMAND ARG : ALL = NOFOLLOW COMMAND ARG
WORD(6) ALL = LOG_INPUT LOG_OUTPUT COMMAND ARG : ALL = NOLOG_INPUT NOLOG_OUTPUT COMMAND
WORD(6) ALL = NOPASSWD NOEXEC SETENV COMMAND : ALL = PASSWD EXEC NOSETENV COMMAND
WORD(6) ALL = MAIL COMMAND : ALL = NOMAIL COMMAND
WORD(6) ALL = FOLLOW COMMAND ARG : ALL = NOFOLLOW COMMAND ARG

2
plugins/sudoers/regress/sudoers/test11.toke.ok
View File

@@ -1,2 +1,2 @@
WORD(5)
WORD(6)
<*>

2
plugins/sudoers/regress/sudoers/test12.toke.ok
View File

@@ -1,2 +1,2 @@
WORD(5) ALL = ( ALL )
WORD(6) ALL = ( ALL )
<*>

2
plugins/sudoers/regress/sudoers/test13.toke.ok
View File

@@ -1 +1 @@
WORD(5) ALL = ( ALL ) <*>
WORD(6) ALL = ( ALL ) <*>

4
plugins/sudoers/regress/sudoers/test14.toke.ok
View File

@@ -1,6 +1,6 @@
CMNDALIAS ALIAS = SHA224_TOK : DIGEST , SHA224_TOK : DIGEST COMMAND
CMNDALIAS ALIAS = SHA256_TOK : DIGEST , SHA256_TOK : DIGEST COMMAND
WORD(5) ALL = ALIAS , ALIAS , SHA512_TOK : DIGEST COMMAND
WORD(6) ALL = ALIAS , ALIAS , SHA512_TOK : DIGEST COMMAND
WORD(5) ALL = SHA256_TOK : DIGEST , SHA256_TOK : DIGEST ALL
WORD(6) ALL = SHA256_TOK : DIGEST , SHA256_TOK : DIGEST ALL

2
plugins/sudoers/regress/sudoers/test15.toke.ok
View File

@@ -1,2 +1,2 @@
#
WORD(5) ALL = COMMAND ARG
WORD(6) ALL = COMMAND ARG

2
plugins/sudoers/regress/sudoers/test16.toke.ok
View File

@@ -1,3 +1,3 @@
#
CMNDALIAS ALIAS = COMMAND ARG
WORD(5) ALL = ALIAS
WORD(6) ALL = ALIAS

18
plugins/sudoers/regress/sudoers/test17.toke.ok
View File

@@ -1,11 +1,11 @@
#
DEFAULTS DEFVAR = WORD(2)
WORD(5) ALL = CMND_TIMEOUT = WORD(5) COMMAND , COMMAND , CMND_TIMEOUT = WORD(5) COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) COMMAND , CMND_TIMEOUT = WORD(5) COMMAND , CMND_TIMEOUT = WORD(5) COMMAND , CMND_TIMEOUT = WORD(5) COMMAND , CMND_TIMEOUT = WORD(5) COMMAND , CMND_TIMEOUT = WORD(5) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) COMMAND , COMMAND , CMND_TIMEOUT = WORD(6) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) COMMAND , CMND_TIMEOUT = WORD(6) COMMAND , CMND_TIMEOUT = WORD(6) COMMAND , CMND_TIMEOUT = WORD(6) COMMAND , CMND_TIMEOUT = WORD(6) COMMAND , CMND_TIMEOUT = WORD(6) COMMAND

12
plugins/sudoers/regress/sudoers/test18.toke.ok
View File

@@ -1,10 +1,10 @@
#
DEFAULTS DEFVAR = WORD(2)
DEFAULTS_USER WORD(5) DEFVAR = WORD(2)
WORD(5) ALL = CMND_TIMEOUT = WORD(5) <*> COMMAND , COMMAND , CMND_TIMEOUT = WORD(5) COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) <*> COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) <*> COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) <*> COMMAND
WORD(5) ALL = CMND_TIMEOUT = WORD(5) <*> COMMAND
DEFAULTS_USER WORD(6) DEFVAR = WORD(2)
WORD(6) ALL = CMND_TIMEOUT = WORD(6) <*> COMMAND , COMMAND , CMND_TIMEOUT = WORD(6) COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) <*> COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) <*> COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) <*> COMMAND
WORD(6) ALL = CMND_TIMEOUT = WORD(6) <*> COMMAND
testsudoers: sudoers:2: value "2d8h10m59ss" is invalid for option "command_timeout"
testsudoers: sudoers:3: value "15f" is invalid for option "command_timeout"

20
plugins/sudoers/regress/sudoers/test19.toke.ok
View File

@@ -1,12 +1,12 @@
#
#
WORD(5) ALL = NOTBEFORE = WORD(5) NOTAFTER = WORD(5) COMMAND , COMMAND
WORD(5) ALL = NOTBEFORE = WORD(5) COMMAND , NOTAFTER = WORD(5) COMMAND
WORD(5) ALL = NOTBEFORE = WORD(5) COMMAND
WORD(5) ALL = NOTBEFORE = WORD(5) COMMAND
WORD(5) ALL = NOTBEFORE = WORD(5) COMMAND
WORD(5) ALL = NOTBEFORE = WORD(5) COMMAND
WORD(5) ALL = NOTBEFORE = WORD(5) COMMAND
WORD(5) ALL = NOTBEFORE = WORD(5) COMMAND
WORD(5) ALL = NOTBEFORE = WORD(5) COMMAND
WORD(5) ALL = NOTBEFORE = WORD(5) COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) NOTAFTER = WORD(6) COMMAND , COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) COMMAND , NOTAFTER = WORD(6) COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) COMMAND
WORD(6) ALL = NOTBEFORE = WORD(6) COMMAND

8
plugins/sudoers/regress/sudoers/test22.toke.ok
View File

@@ -1,6 +1,6 @@
#
WORD(5) ALL = ( : ) ALL
WORD(5) ALL = ( : ) ALL
WORD(5) ALL = ( ) ALL
WORD(5) ALL = ( ) ALL
WORD(6) ALL = ( : ) ALL
WORD(6) ALL = ( : ) ALL
WORD(6) ALL = ( ) ALL
WORD(6) ALL = ( ) ALL

8
plugins/sudoers/regress/sudoers/test3.toke.ok
View File

@@ -1,6 +1,6 @@
#
USERALIAS ALIAS = WORD(5) , WORD(5)
USERALIAS ALIAS = WORD(6) , WORD(6)
DEFAULTS_USER ALIAS DEFVAR
DEFAULTS_USER WORD(5) , WORD(5) DEFVAR
DEFAULTS_USER WORD(5) , WORD(5) DEFVAR
DEFAULTS_USER WORD(5) , WORD(5) DEFVAR
DEFAULTS_USER WORD(6) , WORD(6) DEFVAR
DEFAULTS_USER WORD(6) , WORD(6) DEFVAR
DEFAULTS_USER WORD(6) , WORD(6) DEFVAR

4
plugins/sudoers/regress/sudoers/test4.toke.ok
View File

@@ -1,5 +1,5 @@
#
USERALIAS ALIAS = WORD(5) : ALIAS = WORD(5)
USERALIAS ALIAS = WORD(6) : ALIAS = WORD(6)
#
USERALIAS ALIAS = WORD(5) <*> ERROR ALIAS = WORD(5)
USERALIAS ALIAS = WORD(6) <*> ERROR ALIAS = WORD(6)

8
plugins/sudoers/regress/sudoers/test6.toke.ok
View File

@@ -1,12 +1,12 @@
#
DEFAULTS_USER WORD(5) DEFVAR
DEFAULTS_RUNAS WORD(5) DEFVAR
DEFAULTS_USER WORD(6) DEFVAR
DEFAULTS_RUNAS WORD(6) DEFVAR
DEFAULTS_USER BEGINSTR STRBODY ENDSTR WORD(4) DEFVAR
DEFAULTS_RUNAS BEGINSTR STRBODY ENDSTR WORD(4) DEFVAR
#
WORD(5) ALL = ALL
WORD(5) ALL = ( WORD(5) : WORD(5) ) ALL
WORD(6) ALL = ALL
WORD(6) ALL = ( WORD(6) : WORD(6) ) ALL
BEGINSTR STRBODY ENDSTR WORD(4) ALL = ALL
BEGINSTR STRBODY ENDSTR WORD(4) ALL = ( BEGINSTR STRBODY ENDSTR WORD(4) : BEGINSTR STRBODY ENDSTR WORD(4) ) ALL

2
plugins/sudoers/regress/sudoers/test8.toke.ok
View File

@@ -1,7 +1,7 @@
#
USERALIAS ALIAS = BEGINSTR STRBODY ENDSTR WORD(4)
USERALIAS ALIAS = BEGINSTR STRBODY STRBODY ENDSTR WORD(4)
USERALIAS ALIAS = WORD(5)
USERALIAS ALIAS = WORD(6)
#
USERALIAS ALIAS = BEGINSTR STRBODY <*> ERROR ERROR

5
plugins/sudoers/sudoers.h
View File

@@ -1,7 +1,7 @@
/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 1993-1996, 1998-2005, 2007-2017
* Copyright (c) 1993-1996, 1998-2005, 2007-2020
* Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
@@ -425,6 +425,9 @@ extern const char *path_plugin_dir;
char *find_editor(int nfiles, char **files, int *argc_out, char ***argv_out,
char * const *whitelist, const char **env_editor, bool env_error);
/* exptilde.c */
bool expand_tilde(char **path, const char *user);
/* gc.c */
enum sudoers_gc_types {
GC_UNKNOWN,

3
plugins/sudoers/sudoers_version.h
View File

@@ -1,7 +1,7 @@
/*
* SPDX-License-Identifier: ISC
*
* Copyright (c) 2011-2013, 2015, 2017
* Copyright (c) 2011-2013, 2015, 2017, 2019-2020
* Todd C. Miller <Todd.Miller@sudo.ws>
*
* Permission to use, copy, modify, and distribute this software for any
@@ -69,6 +69,7 @@
* 46 sudo 1.8.20, added TIMEOUT, NOTBEFORE and NOTAFTER options.
* 47 sudo 1.9.0, Cmd_Alias treated as Cmnd_Alias, support for multiple digests per command and for ALL.
* 48 sudo 1.9.1, @include and @includedir, include path escaping/quoting.
* 49 sudo 1.9.3, CWD and CHDIR options.
*/
#ifndef SUDOERS_VERSION_H

4084
plugins/sudoers/toke.c
View File

File diff suppressed because it is too large Load Diff

36
plugins/sudoers/toke.l
View File

@@ -115,6 +115,7 @@ DEFVAR [a-z_]+
%x INSTR
%s WANTDIGEST
%x GOTINC
%s EXPECTPATH
%%
<GOTDEFS>[[:blank:]]*,[[:blank:]]* {
@@ -573,6 +574,20 @@ ALL {
LEXRETURN(NOTAFTER);
}
<INITIAL>CWD {
LEXTRACE("CWD ");
prev_state = YY_START;
BEGIN EXPECTPATH;
LEXRETURN(CWD);
}
<INITIAL>CHROOT {
LEXTRACE("CHROOT ");
prev_state = YY_START;
BEGIN EXPECTPATH;
LEXRETURN(CHROOT);
}
<INITIAL>ROLE {
#ifdef HAVE_SELINUX
LEXTRACE("ROLE ");
@@ -660,6 +675,14 @@ sudoedit {
yyterminate();
} /* sudo -e */
<EXPECTPATH>({PATH}|{WORD}) {
BEGIN prev_state;
if (!fill(sudoerstext, sudoersleng))
yyterminate();
LEXTRACE("WORD(5) ");
LEXRETURN(WORD);
}
{PATH} {
/* directories can't have args... */
if (sudoerstext[sudoersleng - 1] == '/') {
@@ -667,12 +690,11 @@ sudoedit {
if (!fill_cmnd(sudoerstext, sudoersleng))
yyterminate();
LEXRETURN(COMMAND);
} else {
BEGIN GOTCMND;
LEXTRACE("COMMAND ");
if (!fill_cmnd(sudoerstext, sudoersleng))
yyterminate();
}
BEGIN GOTCMND;
LEXTRACE("COMMAND ");
if (!fill_cmnd(sudoerstext, sudoersleng))
yyterminate();
} /* a pathname */
<INITIAL,GOTDEFS>\" {
@@ -686,7 +708,7 @@ sudoedit {
/* a word */
if (!fill(sudoerstext, sudoersleng))
yyterminate();
LEXTRACE("WORD(5) ");
LEXTRACE("WORD(6) ");
LEXRETURN(WORD);
}
@@ -696,7 +718,7 @@ sudoedit {
if (!fill(sudoerstext, sudoersleng))
yyterminate();
BEGIN INITIAL;
LEXTRACE("WORD(6) ");
LEXTRACE("WORD(7) ");
LEXRETURN(WORD);
}