1: What's new in Sudo 1.8.3p2?
2:
3: * Fixed a format string vulnerability when the sudo binary (or a
4: symbolic link to the sudo binary) contains printf format escapes
5: and the -D (debugging) flag is used.
6:
7: What's new in Sudo 1.8.3p1?
8:
9: * Fixed a crash in the monitor process on Solaris when NOPASSWD
10: was specified or when authentication was disabled.
11:
12: * Fixed matching of a Runas_Alias in the group section of a
13: Runas_Spec.
14:
15: What's new in Sudo 1.8.3?
16:
17: * Fixed expansion of strftime() escape sequences in the "log_dir"
18: sudoers setting.
19:
20: * Esperanto, Italian and Japanese translations from translationproject.org.
21:
22: * Sudo will now use PAM by default on AIX 6 and higher.
23:
24: * Added --enable-werror configure option for gcc's -Werror flag.
25:
26: * Visudo no longer assumes all editors support the +linenumber
27: command line argument. It now uses a whitelist of editors known
28: to support the option.
29:
30: * Fixed matching of network addresses when a netmask is specified
31: but the address is not the first one in the CIDR block.
32:
33: * The configure script now check whether or not errno.h declares
34: the errno variable. Previously, sudo would always declare errno
35: itself for older systems that don't declare it in errno.h.
36:
37: * The NOPASSWD tag is now honored for denied commands too, which
38: matches historic sudo behavior (prior to sudo 1.7.0).
39:
40: * Sudo now honors the "DEREF" setting in ldap.conf which controls
41: how alias dereferencing is done during an LDAP search.
42:
43: * A symbol conflict with the pam_ssh_agent_auth PAM module that
44: would cause a crash been resolved.
45:
46: * The inability to load a group provider plugin is no longer
47: a fatal error.
48:
49: * A potential crash in the utmp handling code has been fixed.
50:
51: * Two PAM session issues have been resolved. In previous versions
52: of sudo, the PAM session was opened as one user and closed as
53: another. Additionally, if no authentication was performed, the
54: PAM session would never be closed.
55:
56: * Sudo will now work correctly with LDAP-based sudoers using TLS
57: or SSL on Debian systems.
58:
59: * The LOGNAME, USER and USERNAME environment variables are preserved
60: correctly again in sudoedit mode.
61:
62: What's new in Sudo 1.8.2?
63:
64: * Sudo, visudo, sudoreplay and the sudoers plug-in now have natural
65: language support (NLS). This can be disabled by passing configure
66: the --disable-nls option. Sudo will use gettext(), if available,
67: to display translated messages. All translations are coordinated
68: via The Translation Project, http://translationproject.org/.
69:
70: * Plug-ins are now loaded with the RTLD_GLOBAL flag instead of
71: RTLD_LOCAL. This fixes missing symbol problems in PAM modules
72: on certain platforms, such as FreeBSD and SuSE Linux Enterprise.
73:
74: * I/O logging is now supported for commands run in background mode
75: (using sudo's -b flag).
76:
77: * Group ownership of the sudoers file is now only enforced when
78: the file mode on sudoers allows group readability or writability.
79:
80: * Visudo now checks the contents of an alias and warns about cycles
81: when the alias is expanded.
82:
83: * If the user specifes a group via sudo's -g option that matches
84: the target user's group in the password database, it is now
85: allowed even if no groups are present in the Runas_Spec.
86:
87: * The sudo Makefiles now have more complete dependencies which are
88: automatically generated instead of being maintained manually.
89:
90: * The "use_pty" sudoers option is now correctly passed back to the
91: sudo front end. This was missing in previous versions of sudo
92: 1.8 which prevented "use_pty" from being honored.
93:
94: * "sudo -i command" now works correctly with the bash version
95: 2.0 and higher. Previously, the .bash_profile would not be
96: sourced prior to running the command unless bash was built with
97: NON_INTERACTIVE_LOGIN_SHELLS defined.
98:
99: * When matching groups in the sudoers file, sudo will now match
100: based on the name of the group instead of the group ID. This can
101: substantially reduce the number of group lookups for sudoers
102: files that contain a large number of groups.
103:
104: * Multi-factor authentication is now supported on AIX.
105:
106: * Added support for non-RFC 4517 compliant LDAP servers that require
107: that seconds be present in a timestamp, such as Tivoli Directory Server.
108:
109: * If the group vector is to be preserved, the PATH search for the
110: command is now done with the user's original group vector.
111:
112: * For LDAP-based sudoers, the "runas_default" sudoOption now works
113: properly in a sudoRole that contains a sudoCommand.
114:
115: * Spaces in command line arguments for "sudo -s" and "sudo -i" are
116: now escaped with a backslash when checking the security policy.
117:
118: What's new in Sudo 1.8.1p2?
119:
120: * Two-character CIDR-style IPv4 netmasks are now matched correctly
121: in the sudoers file.
122:
123: * A build error with MIT Kerberos V has been resolved.
124:
125: * A crash on HP-UX in the sudoers plugin when wildcards are
126: present in the sudoers file has been resolved.
127:
128: * Sudo now works correctly on Tru64 Unix again.
129:
130: What's new in Sudo 1.8.1p1?
131:
132: * Fixed a problem on AIX where sudo was unable to set the final
133: uid if the PAM module modified the effective uid.
134:
135: * A non-existent includedir is now treated the same as an empty
136: directory and not reported as an error.
137:
138: * Removed extraneous parens in LDAP filter when sudoers_search_filter
139: is enabled that can cause an LDAP search error.
140:
141: * Fixed a "make -j" problem for "make install".
142:
143: What's new in Sudo 1.8.1?
144:
145: * A new LDAP setting, sudoers_search_filter, has been added to
146: ldap.conf. This setting can be used to restrict the set of
147: records returned by the LDAP query. Based on changes from Matthew
148: Thomas.
149:
150: * White space is now permitted within a User_List when used in
151: conjunction with a per-user Defaults definition.
152:
153: * A group ID (%#gid) may now be specified in a User_List or Runas_List.
154: Likewise, for non-Unix groups the syntax is %:#gid.
155:
156: * Support for double-quoted words in the sudoers file has been fixed.
157: The change in 1.7.5 for escaping the double quote character
158: caused the double quoting to only be available at the beginning
159: of an entry.
160:
161: * The fix for resuming a suspended shell in 1.7.5 caused problems
162: with resuming non-shells on Linux. Sudo will now save the process
163: group ID of the program it is running on suspend and restore it
164: when resuming, which fixes both problems.
165:
166: * A bug that could result in corrupted output in "sudo -l" has been
167: fixed.
168:
169: * Sudo will now create an entry in the utmp (or utmpx) file when
170: allocating a pseudo-tty (e.g. when logging I/O). The "set_utmp"
171: and "utmp_runas" sudoers file options can be used to control this.
172: Other policy plugins may use the "set_utmp" and "utmp_user"
173: entries in the command_info list.
174:
175: * The sudoers policy now stores the TSID field in the logs
176: even when the "iolog_file" sudoers option is defined to a value
177: other than %{sessid}. Previously, the TSID field was only
178: included in the log file when the "iolog_file" option was set
179: to its default value.
180:
181: * The sudoreplay utility now supports arbitrary session IDs.
182: Previously, it would only work with the base-36 session IDs
183: that the sudoers plugin uses by default.
184:
185: * Sudo now passes "run_shell=true" to the policy plugin in the
186: settings list when sudo's -s command line option is specified.
187: The sudoers policy plugin uses this to implement the "set_home"
188: sudoers option which was missing from sudo 1.8.0.
189:
190: * The "noexec" functionality has been moved out of the sudoers
191: policy plugin and into the sudo front-end, which matches the
192: behavior documented in the plugin writer's guide. As a result,
193: the path to the noexec file is now specified in the sudo.conf
194: file instead of the sudoers file.
195:
196: * On Solaris 10, the PRIV_PROC_EXEC privilege is now used to
197: implement the "noexec" feature. Previously, this was implemented
198: via the LD_PRELOAD environment variable.
199:
200: * The exit values for "sudo -l", "sudo -v" and "sudo -l command"
201: have been fixed in the sudoers policy plugin.
202:
203: * The sudoers policy plugin now passes the login class, if any,
204: back to the sudo front-end.
205:
206: * The sudoers policy plugin was not being linked with requisite
207: libraries in certain configurations.
208:
209: * Sudo now parses command line arguments before loading any plugins.
210: This allows "sudo -V" or "sudo -h" to work even if there is a problem
211: with sudo.conf
212:
213: * Plugins are now linked with the static version of libgcc to allow
214: the plugin to run on a system where no shared libgcc is installed,
215: or where it is installed in a different location.
216:
217: What's new in Sudo 1.8.0?
218:
219: * Sudo has been refactored to use a modular framework that can
220: support third-party policy and I/O logging plugins. The default
221: plugin is "sudoers" which provides the traditional sudo functionality.
222: See the sudo_plugin manual for details on the plugin API and the
223: sample in the plugins directory for a simple example.
224:
225: What's new in Sudo 1.7.5?
226:
227: * When using visudo in check mode, a file named "-" may be used to
228: check sudoers data on the standard input.
229:
230: * Sudo now only fetches shadow password entries when using the
231: password database directly for authentication.
232:
233: * Password and group entries are now cached using the same key
234: that was used to look them up. This fixes a problem when looking
235: up entries by name if the name in the retrieved entry does not
236: match the name used to look it up. This may happen on some systems
237: that do case insensitive lookups or that truncate long names.
238:
239: * GCC will no longer display warnings on glibc systems that use
240: the warn_unused_result attribute for write(2) and other system calls.
241:
242: * If a PAM account management module denies access, sudo now prints
243: a more useful error message and stops trying to validate the user.
244:
245: * Fixed a potential hang on idle systems when the sudo-run process
246: exits immediately.
247:
248: * Sudo now includes a copy of zlib that will be used on systems
249: that do not have zlib installed.
250:
251: * The --with-umask-override configure flag has been added to enable
252: the "umask_override" sudoers Defaults option at build time.
253:
254: * Sudo now unblocks all signals on startup to avoid problems caused
255: by the parent process changing the default signal mask.
256:
257: * LDAP Sudoers entries may now specify a time period for which
258: the entry is valid. This requires an updated sudoers schema
259: that includes the sudoNotBefore and sudoNotAfter attributes.
260: Support for timed entries must be explicitly enabled in the
261: ldap.conf file. Based on changes from Andreas Mueller.
262:
263: * LDAP Sudoers entries may now specify a sudoOrder attribute that
264: determines the order in which matching entries are applied. The
265: last matching entry is used, just like file-based sudoers. This
266: requires an updated sudoers schema that includes the sudoOrder
267: attribute. Based on changes from Andreas Mueller.
268:
269: * When run as sudoedit, or when given the -e flag, sudo now treats
270: command line arguments as pathnames. This means that slashes
271: in the sudoers file entry must explicitly match slashes in
272: the command line arguments. As a result, and entry such as:
273: user ALL = sudoedit /etc/*
274: will allow editing of /etc/motd but not /etc/security/default.
275:
276: * NETWORK_TIMEOUT is now an alias for BIND_TIMELIMIT in ldap.conf for
277: compatibility with OpenLDAP configuration files.
278:
279: * The LDAP API TIMEOUT parameter is now honored in ldap.conf.
280:
281: * The I/O log directory may now be specified in the sudoers file.
282:
283: * Sudo will no longer refuse to run if the sudoers file is writable
284: by root.
285:
286: * Sudo now performs command line escaping for "sudo -s" and "sudo -i"
287: after validating the command so the sudoers entries do not need
288: to include the backslashes.
289:
290: * Logging and email sending are now done in the locale specified
291: by the "sudoers_locale" setting ("C" by default). Email send by
292: sudo now includes MIME headers when "sudoers_locale" is not "C".
293:
294: * The configure script has a new option, --disable-env-reset, to
295: allow one to change the default for the sudoers Default setting
296: "env_reset" at compile time.
297:
298: * When logging "sudo -l command", sudo will now prepend "list "
299: to the command in the log line to distinguish between an
300: actual command invocation in the logs.
301:
302: * Double-quoted group and user names may now include escaped double
303: quotes as part of the name. Previously this was a parse error.
304:
305: * Sudo once again restores the state of the signal handlers it
306: modifies before executing the command. This allows sudo to be
307: used with the nohup command.
308:
309: * Resuming a suspended shell now works properly when I/O logging
310: is not enabled (the I/O logging case was already correct).
311:
312: What's new in Sudo 1.7.4p6?
313:
314: * A bug has been fixed in the I/O logging support that could cause
315: visual artifacts in full-screen programs such as text editors.
316:
317: What's new in Sudo 1.7.4p5?
318:
319: * A bug has been fixed that would allow a command to be run without the
320: user entering a password when sudo's -g flag is used without the -u flag.
321:
322: * If user has no supplementary groups, sudo will now fall back on checking
323: the group file explicitly, which restores historic sudo behavior.
324:
325: * A crash has been fixed when sudo's -g flag is used without the -u flag
326: and the sudoers file contains an entry with no runas user or group listed.
327:
328: * A crash has been fixed when the Solaris project support is enabled
329: and sudo's -g flag is used without the -u flag.
330:
331: * Sudo no longer exits with an error when support for auditing is
332: compiled in but auditing is not enabled.
333:
334: * Fixed a bug introduced in sudo 1.7.3 where the ticket file was not
335: being honored when the "targetpw" sudoers Defaults option was enabled.
336:
337: * The LOG_INPUT and LOG_OUTPUT tags in sudoers are now parsed correctly.
338:
339: * A crash has been fixed in "sudo -l" when sudo is built with auditing
340: support and the user is not allowed to run any commands on the host.
341:
342: What's new in Sudo 1.7.4p4?
343:
344: * A potential security issue has been fixed with respect to the handling
345: of sudo's -g command line option when -u is also specified. The flaw
346: may allow an attacker to run commands as a user that is not authorized
347: by the sudoers file.
348:
349: * A bug has been fixed where "sudo -l" output was incomplete if multiple
350: sudoers sources were defined in nsswitch.conf and there was an error
351: querying one of the sources.
352:
353: * The log_input, log_output, and use_pty sudoers options now work correctly
354: on AIX. Previously, sudo would hang if they were enabled.
355:
356: * The "make install" target now works correctly when sudo is built in a
357: directory other than the source directory.
358:
359: * The "runas_default" sudoers setting now works properly in a per-command
360: Defaults line.
361:
362: * Suspending and resuming the bash shell when PAM is in use now works
363: correctly. The SIGCONT signal was not propagated to the child process.
364:
365: What's new in Sudo 1.7.4p3?
366:
367: * A bug has been fixed where duplicate HOME environment variables could be
368: present when the env_reset setting was disabled and the always_set_home
369: setting was enabled in sudoers.
370:
371: * The value of sysconfdir is now substituted into the path to the sudoers.d
372: directory in the installed sudoers file.
373:
374: * Compilation problems on IRIX and other platforms have been fixed.
375:
376: * If multiple PAM "auth" actions are specified and the user enters ^C at
377: the password prompt, sudo will no longer prompt for a password for any
378: subsequent "auth" actions. Previously it was necessary to enter ^C for
379: each "auth" action.
380:
381: What's new in Sudo 1.7.4p2?
382:
383: * A bug where sudo could spin in a busy loop waiting for the child process
384: has been fixed.
385:
386: What's new in Sudo 1.7.4p1?
387:
388: * A bug introduced in sudo 1.7.3 that prevented the -k and -K options from
389: functioning when the tty_tickets sudoers option is enabled has been fixed.
390:
391: * Sudo no longer prints a warning when the -k or -K options are specified
392: and the ticket file does not exist.
393:
394: * It is now easier to cross-compile sudo.
395:
396: What's new in Sudo 1.7.4?
397:
398: * Sudoedit will now preserve the file extension in the name of the
399: temporary file being edited. The extension is used by some
400: editors (such as emacs) to choose the editing mode.
401:
402: * Time stamp files have moved from /var/run/sudo to either /var/db/sudo,
403: /var/lib/sudo or /var/adm/sudo. The directories are checked for
404: existence in that order. This prevents users from receiving the
405: sudo lecture every time the system reboots. Time stamp files older
406: than the boot time are ignored on systems where it is possible to
407: determine this.
408:
409: * The tty_tickets sudoers option is now enabled by default.
410:
411: * Ancillary documentation (README files, LICENSE, etc) is now installed
412: in a sudo documentation directory.
413:
414: * Sudo now recognizes "tls_cacert" as an alias for "tls_cacertfile"
415: in ldap.conf.
416:
417: * Defaults settings that are tied to a user, host or command may
418: now include the negation operator. For example:
419: Defaults:!millert lecture
420: will match any user but millert.
421:
422: * The default PATH environment variable, used when no PATH variable
423: exists, now includes /usr/sbin and /sbin.
424:
425: * Sudo now uses polypkg (http://rc.quest.com/topics/polypkg/)
426: for cross-platform packing.
427:
428: * On Linux, sudo will now restore the nproc resource limit before
429: executing a command, unless the limit appears to have been modified
430: by pam_limits. This avoids a problem with bash scripts that open
431: more than 32 descriptors on SuSE Linux, where sysconf(_SC_CHILD_MAX)
432: will return -1 when RLIMIT_NPROC is set to RLIMIT_UNLIMITED (-1).
433:
434: * The HOME and MAIL environment variables are now reset based on the
435: target user's password database entry when the env_reset sudoers option
436: is enabled (which is the case in the default configuration). Users
437: wishing to preserve the original values should use a sudoers entry like:
438: Defaults env_keep += HOME
439: to preserve the old value of HOME and
440: Defaults env_keep += MAIL
441: to preserve the old value of MAIL.
442:
443: * Fixed a problem in the restoration of the AIX authdb registry setting.
444:
445: * Sudo will now fork(2) and wait until the command has completed before
446: calling pam_close_session().
447:
448: * The default syslog facility is now "authpriv" if the operating system
449: supports it, else "auth".
450:
451: What's new in Sudo 1.7.3?
452:
453: * Support for logging I/O for the command being run.
454: For more information, see the documentation for the "log_input"
455: and "log_output" Defaults options in the sudoers manual. Also
456: see the sudoreplay manual for how to replay I/O log sessions.
457:
458: * The use_pty sudoers option can be used to force a command to be
459: run in a pseudo-pty, even when I/O logging is not enabled.
460:
461: * On some systems, sudo can now detect when a user has logged out
462: and back in again when tty-based time stamps are in use. Supported
463: systems include Solaris systems with the devices file system,
464: Mac OS X, and Linux systems with the devpts filesystem (pseudo-ttys
465: only).
466:
467: * On AIX systems, the registry setting in /etc/security/user is
468: now taken into account when looking up users and groups. Sudo
469: now applies the correct the user and group ids when running a
470: command as a user whose account details come from a different
471: source (e.g. LDAP or DCE vs. local files).
472:
473: * Support for multiple 'sudoers_base' and 'uri' entries in ldap.conf.
474: When multiple entries are listed, sudo will try each one in the
475: order in which they are specified.
476:
477: * Sudo's SELinux support should now function correctly when running
478: commands as a non-root user and when one of stdin, stdout or stderr
479: is not a terminal.
480:
481: * Sudo will now use the Linux audit system with configure with
482: the --with-linux-audit flag.
483:
484: * Sudo now uses mbr_check_membership() on systems that support it
485: to determine group membership. Currently, only Darwin (Mac OS X)
486: supports this.
487:
488: * When the tty_tickets sudoers option is enabled but there is no
489: terminal device, sudo will no longer use or create a tty-based
490: ticket file. Previously, sudo would use a tty name of "unknown".
491: As a consequence, if a user has no terminal device, sudo will
492: now always prompt for a password.
493:
494: * The passwd_timeout and timestamp_timeout options may now be
495: specified as floating point numbers for more granular timeout
496: values.
497:
498: * Negating the fqdn option in sudoers now works correctly when sudo
499: is configured with the --with-fqdn option. In previous versions
500: of sudo the fqdn was set before sudoers was parsed.
501:
502: What's new in Sudo 1.7.2?
503:
504: * A new #includedir directive is available in sudoers. This can be
505: used to implement an /etc/sudo.d directory. Files in an includedir
506: are not edited by visudo unless they contain a syntax error.
507:
508: * The -g option did not work properly when only setting the group
509: (and not the user). Also, in -l mode the wrong user was displayed
510: for sudoers entries where only the group was allowed to be set.
511:
512: * Fixed a problem with the alias checking in visudo which
513: could prevent visudo from exiting.
514:
515: * Sudo will now correctly parse the shell-style /etc/environment
516: file format used by pam_env on Linux.
517:
518: * When doing password and group database lookups, sudo will only
519: cache an entry by name or by id, depending on how the entry was
520: looked up. Previously, sudo would cache by both name and id
521: from a single lookup, but this breaks sites that have multiple
522: password or group database names that map to the same uid or
523: gid.
524:
525: * User and group names in sudoers may now be enclosed in double
526: quotes to avoid having to escape special characters.
527:
528: * BSM audit fixes when changing to a non-root uid.
529:
530: * Experimental non-Unix group support. Currently only works with
531: Quest Authorization Services and allows Active Directory groups
532: fixes for Minix-3.
533:
534: * For Netscape/Mozilla-derived LDAP SDKs the certificate and key
535: paths may be specified as a directory or a file. However, version
536: 5.0 of the SDK only appears to support using a directory (despite
537: documentation to the contrary). If SSL client initialization
538: fails and the certificate or key paths look like they could be
539: default file name, strip off the last path element and try again.
540:
541: * A setenv() compatibility fix for Linux systems, where a NULL
542: value is treated the same as an empty string and the variable
543: name is checked against the NULL pointer.
544:
545: What's new in Sudo 1.7.1?
546:
547: * A new Defaults option "pwfeedback" will cause sudo to provide visual
548: feedback when the user is entering a password.
549:
550: * A new Defaults option "fast_glob" will cause sudo to use the fnmatch()
551: function for file name globbing instead of glob(). When this option
552: is enabled, sudo will not check the file system when expanding wildcards.
553: This is faster but a side effect is that relative paths with wildcard
554: will no longer work.
555:
556: * New BSM audit support for systems that support it such as FreeBSD
557: and Mac OS X.
558:
559: * The file name specified with the #include directive may now include
560: a %h escape which is expanded to the short form of hostname.
561:
562: * The -k flag may now be specified along with a command, causing the
563: user's timestamp file to be ignored.
564:
565: * New support for Tivoli-based LDAP START_TLS, present in AIX.
566:
567: * New support for /etc/netsvc.conf on AIX.
568:
569: * The unused alias checks in visudo now handle the case of an alias
570: referring to another alias.
571:
572: What's new in Sudo 1.7.0?
573:
574: * Rewritten parser that converts sudoers into a set of data structures.
575: This eliminates a number of ordering issues and makes it possible to
576: apply sudoers Defaults entries before searching for the command.
577: It also adds support for per-command Defaults specifications.
578:
579: * Sudoers now supports a #include facility to allow the inclusion of other
580: sudoers-format files.
581:
582: * Sudo's -l (list) flag has been enhanced:
583: o applicable Defaults options are now listed
584: o a command argument can be specified for testing whether a user
585: may run a specific command.
586: o a new -U flag can be used in conjunction with "sudo -l" to allow
587: root (or a user with "sudo ALL") list another user's privileges.
588:
589: * A new -g flag has been added to allow the user to specify a
590: primary group to run the command as. The sudoers syntax has been
591: extended to include a group section in the Runas specification.
592:
593: * A uid may now be used anywhere a username is valid.
594:
595: * The "secure_path" run-time Defaults option has been restored.
596:
597: * Password and group data is now cached for fast lookups.
598:
599: * The file descriptor at which sudo starts closing all open files is now
600: configurable via sudoers and, optionally, the command line.
601:
602: * Visudo will now warn about aliases that are defined but not used.
603:
604: * The -i and -s command line flags now take an optional command
605: to be run via the shell. Previously, the argument was passed
606: to the shell as a script to run.
607:
608: * Improved LDAP support. SASL authentication may now be used in
609: conjunction when connecting to an LDAP server. The krb5_ccname
610: parameter in ldap.conf may be used to enable Kerberos.
611:
612: * Support for /etc/nsswitch.conf. LDAP users may now use nsswitch.conf
613: to specify the sudoers order. E.g.:
614: sudoers: ldap files
615: to check LDAP, then /etc/sudoers. The default is "files", even
616: when LDAP support is compiled in. This differs from sudo 1.6
617: where LDAP was always consulted first.
618:
619: * Support for /etc/environment on AIX and Linux. If sudo is run
620: with the -i flag, the contents of /etc/environment are used to
621: populate the new environment that is passed to the command being
622: run.
623:
624: * If no terminal is available or if the new -A flag is specified,
625: sudo will use a helper program to read the password if one is
626: configured. Typically, this is a graphical password prompter
627: such as ssh-askpass.
628:
629: * A new Defaults option, "mailfrom" that sets the value of the
630: "From:" field in the warning/error mail. If unspecified, the
631: login name of the invoking user is used.
632:
633: * A new Defaults option, "env_file" that refers to a file containing
634: environment variables to be set in the command being run.
635:
636: * A new flag, -n, may be used to indicate that sudo should not
637: prompt the user for a password and, instead, exit with an error
638: if authentication is required.
639:
640: * If sudo needs to prompt for a password and it is unable to disable
641: echo (and no askpass program is defined), it will refuse to run
642: unless the "visiblepw" Defaults option has been specified.
643:
644: * Prior to version 1.7.0, hitting enter/return at the Password: prompt
645: would exit sudo. In sudo 1.7.0 and beyond, this is treated as
646: an empty password. To exit sudo, the user must press ^C or ^D
647: at the prompt.
648:
649: * visudo will now check the sudoers file owner and mode in -c (check)
650: mode when the -s (strict) flag is specified.
651:
652: * A new Defaults option "umask_override" will cause sudo to set the
653: umask specified in sudoers even if it is more permissive than the
654: invoking user's umask.
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