sudo-1.9.13

[Douglas R. Reno]

New point version

[Bruce Dubbs]

What's new in Sudo 1.9.13

• Fixed a bug running relative commands via sudo when "log_subcmds" is enabled.

• Fixed a signal handling bug when running sudo commands in a shell script. Signals were not being forwarded to the command when the sudo process was not run in its own process group.

• Fixed a bug in cvtsudoers' LDIF parsing when the file ends without a newline and a backslash is the last character of the file.

• Fixed a potential use-after-free bug with cvtsudoers filtering.

• Added a reminder to the default lecture that the password will not echo. This line is only displayed when the pwfeedback option is disabled.

• Fixed potential memory leaks in error paths.

• Fixed potential NULL dereferences on memory allocation failure.

• Sudo now uses C23-style attributes in function prototypes instead of gcc-style attributes if supported.

• Added a new "list" pseudo-command in sudoers to allow a user to list another user's privileges. Previously, only root or a user with the ability to run any command as either root or the target user on the current host could use the -U option. This also includes a fix to the log entry when a user lacks permission to run "sudo -U otheruser -l command". Previously, the logs would indicate that the user tried to run the actual command, now the log entry includes the list operation.

• JSON logging now escapes control characters if they happen to appear in the command or environment.

• New Albanian translation from translationproject.org.

• Regular expressions in sudoers or logsrvd.conf may no longer contain consecutive repetition operators. This is implementation- specific behavior according to POSIX, but some implementations will allocate excessive amounts of memory. This mainly affects the fuzzers.

• Sudo now builds AIX-style shared libraries and dynamic shared objects by default instead of svr4-style. This means that the default sudo plugins are now .a (archive) files that contain a .so shared object file instead of bare .so files. This was done to improve compatibility with the AIX Freeware ecosystem, specifically, the AIX Freeware build of OpenSSL. Sudo will still load svr4-style .so plugins and if a .so file is requested, either via sudo.conf or the sudoers file, and only the .a file is present, sudo will convert the path from plugin.so to plugin.a(plugin.so) when loading it. This ensures compatibility with existing configurations. To restore the old, pre-1.9.13 behavior, run configure using the --with-aix-soname=svr4 option.

• Sudo no longer checks the ownership and mode of the plugins that it loads. Plugins are configured via either the sudo.conf or sudoers file which are trusted configuration files. These checks suffered from time-of-check vs. time-of-use race conditions and complicate loading plugins that are not simple paths. Ownership and mode checks are still performed when loading the sudo.conf and sudoers files, which do not suffer from race conditions. The sudo.conf "developer_mode" setting is no longer used.

• Control characters in sudo log messages and "sudoreplay -l" output are now escaped in octal format. Space characters in the command path are also escaped. Command line arguments that contain spaces are surrounded by single quotes and any literal single quote or backslash characters are escaped with a backslash. This makes it possible to distinguish multiple command line arguments from a single argument that contains spaces.

• Improved support for DragonFly BSD which uses a different struct procinfo than either FreeBSD or 4.4BSD.

• Fixed a compilation error on Linux arm systems running older kernels that may not define EM_ARM in linux/elf-em.h.

• Fixed a compilation error when LDFLAGS contains -Wl,--no-undefined. Sudo will now link using -Wl,--no-undefined by default if possible.

• Fixed a bug executing a command with a very long argument vector when "log_subcmds" or "intercept" is enabled on a system where "intercept_type" is set to "trace".
• When sudo is configured to run a command in a pseudo-terminal but the standard input is not connected to a terminal, the command will now be run as a background process. This works around a problem running sudo commands in the background from a shell script where changing the terminal to raw mode could interfere with the interactive shell that ran the script.

• A missing include file in sudoers is no longer a fatal error unless the error_recovery plugin argument has been set to false.

[Bruce Dubbs]

Fixed at commit 942360aa8a05b68860547ca0a61a6587e23f7144