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Sudo 1.9.5

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This commit is contained in:
Todd C. Miller
2021-01-08 19:52:45 -07:00
parent 250cccfe4c
commit 9e111eae57
7 changed files with 78 additions and 15 deletions
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63
NEWS
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@@ -1,3 +1,66 @@
What's new in Sudo 1.9.5
* Fixed a crash introduced in 1.9.4 when running "sudo -i" as an
unknown user. This is related to but distinct from Bug #948.
* If the "lecture_file" setting is enabled in sudoers, it must now
refer to a regular file or a symbolic link to a regular file.
* Fixed a potential use-after-free bug in sudo_logsrvd when the
server shuts down if there are existing connections from clients
that are only logging events and not session I/O data.
* Fixed a buffer size mismatch when serializing the list of IP
addresses for configured network interfaces. This bug is not
actually exploitable since the allocated buffer is large enough
to hold the list of addresses.
* If sudo is executed with a name other that "sudo" or "sudoedit",
it will now fall back to "sudo" as the program name. This affects
warning, help and usage messages as well as the matching of Debug
lines in the /etc/sudo.conf file. Previously, it was possible
for the invoking user to manipulate the program name by setting
argv[0] to an arbitrary value when executing sudo.
* Sudo now checks for failure when setting the close-on-exec flag
on open file descriptors. This should never fail but, if it
were to, there is the possibility of a file descriptor leak to
a child process (such as the command sudo runs).
* Fixed CVE-2021-23239, a potential information leak in sudoedit
that could be used to test for the existence of directories not
normally accessible to the user in certain circumstances. When
creating a new file, sudoedit checks to make sure the parent
directory of the new file exists before running the editor.
However, a race condition exists if the invoking user can replace
(or create) the parent directory. If a symbolic link is created
in place of the parent directory, sudoedit will run the editor
as long as the target of the link exists. If the target of the
link does not exist, an error message will be displayed. The
race condition can be used to test for the existence of an
arbitrary directory. However, it _cannot_ be used to write to
an arbitrary location.
* Fixed CVE-2021-23240, a flaw in the temporary file handling of
sudoedit's SELinux RBAC support. On systems where SELinux is
enabled, a user with sudoedit permissions may be able to set the
owner of an arbitrary file to the user-ID of the target user.
On Linux kernels that support "protected symlinks", setting
/proc/sys/fs/protected_symlinks to 1 will prevent the bug from
being exploited. For more information see
https://www.sudo.ws/alerts/sudoedit_selinux.html.
* Added writability checks for sudoedit when SELinux RBAC is in use.
This makes sudoedit behavior consistent regardless of whether
or not SELinux RBAC is in use. Previously, the "sudoedit_checkdir"
setting had no effect for RBAC entries.
* A new sudoers option "selinux" can be used to disable sudo's
SELinux RBAC support.
* Quieted warnings from PVS Studio, clang analyzer, and cppcheck.
Added suppression annotations for PVS Studio false positives.
What's new in Sudo 1.9.4p2
* Fixed a bug introduced in sudo 1.9.4p1 which could lead to a crash

18
configure vendored
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@@ -1,6 +1,6 @@
#! /bin/sh
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.69 for sudo 1.9.4p2.
# Generated by GNU Autoconf 2.69 for sudo 1.9.5.
#
# Report bugs to <https://bugzilla.sudo.ws/>.
#
@@ -590,8 +590,8 @@ MAKEFLAGS=
# Identity of this package.
PACKAGE_NAME='sudo'
PACKAGE_TARNAME='sudo'
PACKAGE_VERSION='1.9.4p2'
PACKAGE_STRING='sudo 1.9.4p2'
PACKAGE_VERSION='1.9.5'
PACKAGE_STRING='sudo 1.9.5'
PACKAGE_BUGREPORT='https://bugzilla.sudo.ws/'
PACKAGE_URL=''
@@ -1584,7 +1584,7 @@ if test "$ac_init_help" = "long"; then
# Omit some internal or obsolete options to make the list less imposing.
# This message is too long to be a string in the A/UX 3.1 sh.
cat <<_ACEOF
\`configure' configures sudo 1.9.4p2 to adapt to many kinds of systems.
\`configure' configures sudo 1.9.5 to adapt to many kinds of systems.
Usage: $0 [OPTION]... [VAR=VALUE]...
@@ -1650,7 +1650,7 @@ fi
if test -n "$ac_init_help"; then
case $ac_init_help in
short | recursive ) echo "Configuration of sudo 1.9.4p2:";;
short | recursive ) echo "Configuration of sudo 1.9.5:";;
esac
cat <<\_ACEOF
@@ -1924,7 +1924,7 @@ fi
test -n "$ac_init_help" && exit $ac_status
if $ac_init_version; then
cat <<\_ACEOF
sudo configure 1.9.4p2
sudo configure 1.9.5
generated by GNU Autoconf 2.69
Copyright (C) 2012 Free Software Foundation, Inc.
@@ -2633,7 +2633,7 @@ cat >config.log <<_ACEOF
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.
It was created by sudo $as_me 1.9.4p2, which was
It was created by sudo $as_me 1.9.5, which was
generated by GNU Autoconf 2.69. Invocation command line was
$ $0 $@
@@ -28816,7 +28816,7 @@ cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
# report actual input values of CONFIG_FILES etc. instead of their
# values after options handling.
ac_log="
This file was extended by sudo $as_me 1.9.4p2, which was
This file was extended by sudo $as_me 1.9.5, which was
generated by GNU Autoconf 2.69. Invocation command line was
CONFIG_FILES = $CONFIG_FILES
@@ -28882,7 +28882,7 @@ _ACEOF
cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
ac_cs_config="`$as_echo "$ac_configure_args" | sed 's/^ //; s/[\\""\`\$]/\\\\&/g'`"
ac_cs_version="\\
sudo config.status 1.9.4p2
sudo config.status 1.9.5
configured by $0, generated by GNU Autoconf 2.69,
with options \\"\$ac_cs_config\\"

4
configure.ac
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@@ -3,7 +3,7 @@ dnl Use the top-level autogen.sh script to generate configure and config.h.in
dnl
dnl SPDX-License-Identifier: ISC
dnl
dnl Copyright (c) 1994-1996, 1998-2020 Todd C. Miller <Todd.Miller@sudo.ws>
dnl Copyright (c) 1994-1996, 1998-2021 Todd C. Miller <Todd.Miller@sudo.ws>
dnl
dnl Permission to use, copy, modify, and distribute this software for any
dnl purpose with or without fee is hereby granted, provided that the above
@@ -18,7 +18,7 @@ dnl ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
dnl OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
dnl
AC_PREREQ([2.59])
AC_INIT([sudo], [1.9.4p2], [https://bugzilla.sudo.ws/], [sudo])
AC_INIT([sudo], [1.9.5], [https://bugzilla.sudo.ws/], [sudo])
AC_CONFIG_HEADERS([config.h pathnames.h])
AC_CONFIG_SRCDIR([src/sudo.c])
dnl

2
doc/LICENSE
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@@ -1,6 +1,6 @@
Sudo is distributed under the following license:
Copyright (c) 1994-1996, 1998-2020
Copyright (c) 1994-1996, 1998-2021
Todd C. Miller <Todd.Miller@sudo.ws>
Permission to use, copy, modify, and distribute this software for any

2
etc/sudo-logsrvd.pp
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@@ -5,7 +5,7 @@
from sudo clients.
This makes it possible to have all sudo I/O logs on a central server."
vendor="Todd C. Miller"
copyright="(c) 2019-2020 Todd C. Miller"
copyright="(c) 2019-2021 Todd C. Miller"
%if [aix]
# Convert to 4 part version for AIX, including patch level

2
etc/sudo-python.pp
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@@ -3,7 +3,7 @@
summary="Sudo Python plugin framework"
description="The sudo Python plugin allows you to extend sudo using Python."
vendor="Todd C. Miller"
copyright="(c) 2019-2020 Todd C. Miller"
copyright="(c) 2019-2021 Todd C. Miller"
%if [aix]
# Convert to 4 part version for AIX, including patch level

2
etc/sudo.pp
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@@ -10,7 +10,7 @@ limited root privileges to users and log root activity. \
The basic philosophy is to give as few privileges as possible but \
still allow people to get their work done."
vendor="Todd C. Miller"
copyright="(c) 1993-1996,1998-2020 Todd C. Miller"
copyright="(c) 1993-1996,1998-2021 Todd C. Miller"
sudoedit_man=`echo ${pp_destdir}$mandir/*/sudoedit.*|sed "s:^${pp_destdir}::"`
sudoedit_man_target=`basename $sudoedit_man | sed 's/edit//'`