CGIWrap - Change Log
These are some of the changes that have occured in CGIWrap from version
New in version 4.2:
- Updates for more php file extensions and case insensitive matching so .PHP will work as well as .php. Submitted by Bartosz Swiatek .
- Alternative implementation of path translated by Dylan Martin , optional, use --with-path-translated-2 build option.
New in version 4.1:
- Added support for specifying a character set to use for cgiwrap output to address a vulnerability in how IE handles documents without a charset specified. The vulnerability allowed cross site scripting when cgiwrap URLs were accessed from a JA version of IE. To specify the charset to use, provide the "--with-charset=X" option to configure when building cgiwrap. It will default to iso-8859-1 if not specifically set.
New in version 4.0:
- Bumped version number to 4.0 to deal with screwed up release numbering of earlier versions.
- Added --with-soft-rlimits-only option based on patch from email@example.com
- Added --with-block-svn-paths and --with-block-cvs-paths options to prevent execution of files in those dirs.
- Added --with-eruby-interpreter option from BlackSun, Inc.
- Added support for setting SIGXCPU even when sigset unavailable - from BlackSun, Inc.
- Fixed some warnings.
- Added support for overriding DESTDIR to install in separate dir (for packaging), from debian/d3xter
New in version 3.10:
- Applied several patches from Javier Fernandez-Sanguino Pen~a for information release security. Removes additional output when quiet errors is enabled.
- Fixed setting of LD_LIBRARY_PATH when configured to do so.
- Fixed setting of ARGV for both regular and interpreted scripts when script is in a subdir. Clean up code
related to this based on a patch from Jack .
- Updated autoconf helpers to much newer release
New in version 3.9:
- Fixed a minor typo preventing allow files from working
- Added support for +@netgroup syntax optionally in allow/deny files.
- Fixed problem with php-nonexec-only not working properly since exec check done too late.
- Applied Piotr's patch few support of newer PHP versions.
- Added support for ASP interpreter execution, similar to PHP support.
- Fix content of PATH_INFO when it should be / or undefined. Based on patch from Cliff Woolley.
New in version 3.8:
- Merged in special handling for PHP scripts by popular demand. This is based mostly on
Piotr Klaban's php-cgiwrap patch, with minor changes.
- Added options for php support. --with-php-interpreter and --with-php-cgiwrap
- Rewrote the path translated support. Is it finally correct?
- Patch from firstname.lastname@example.org to use REDIRECT_URL if available for SCRIPT_NAME.
- Added support for access control files specific to each HTTP_HOST, useful for ISP's using Apache handlers to run
cgi's that want to restrict which userids can run cgi's on certain vhosts. If enabled, the vhost access control files must exist.
- Added option to require that REDIRECT_URL be specified in environment. Can be used to require that cgiwrap be invoked via a handler/action or some other internal apache redirection/rewrite. Primarily of use when invoking cgi's for virtual hosts via Action/SetHandler.
- Modified san's REDIRECT_URL support to be --with-use-redirect-url instead of --with-check-redirect-url, since it's more a functional change, not a security check.
- Added a --with-quiet-errors option to allow significantly restricting the amount of
internal information that an error message displays.
- Added ability to override the vhost that cgiwrap users via an optional CGIWRAP_AUTH_VHOST env var, which if present and feature enabled, will be used instead of HTTP_HOST. This is useful for
when you have wildcard servernames in apache. Enable the --with-vhost-override option if you want this capabillity. Only applicable if vhost allow/deny dir is enabled.
- Added ability to only allow scripts run by a specific userid if the CGIWRAP_REQUIRE_USER env var is specified and the --with-env-require-user feature is enabled.
- Changed to autoconf 2.5 style templates and eliminated acconfig.h.
- Added option to enable the special PHP support only for non-executable files.
- Added modified patch by Gabriel Ambuehl to use SCRIPT_URL for SCRIPT_NAME generation.
New in version 3.7.1:
- Added --with-minimum-gid option to check minimum user GID and auxilliary groups. This is
in response to complaints on BugTraq about suexec not checking auxgroups.
New in version 3.7:
- Encode user supplied output in error messages to fix cross-site
scripting vulnerability reported by Hiromitsu Takagi.
- Minor warning cleanup
- Slight improvement to a couple diagnostic messages.
New in version 3.6.5:
- Fixed small problem with glibc2.1 and errno.h vs. sys/errno.h
- Added simple chroot support for expert installations.
- Applied fix for path translated, removed option for not enabling
correct path_translated value.
- Added multiuser cgi script directory support.
- Added patch from Scott Sutherland for fixing parsing of auth files.
- Added patch from Christian Kruse for better symlink handling.
New in version 3.6.4:
- Changed license to GPL finally.
- Fixed netmask comparison
- Added anonymous CVS server info
- Updates from David Hollenberg for misc. error checking/handling and overflow protection.
- Added check for making sure cgiwrap is setuid and printing out a usable
error message if not.
- Now prints out path to access control files if one or both are missing.
- Slight changes to aux groups code just in case setgroups() doesn't
support a empty list.
- Added some extra info to server userid error message.
- Added some info to the FAQ.
New in version 3.6.3:
- Added support for checking if user has a valid shell, similar to
what ftpd does. The BSD licensed getusershell.o has been included for support
- Bug fix for SEGV condition when certain syntax is used for the request.
It did not appear exploitable, but would cause cgiwrap to core as root. Thanks
to Michael Bryan (email@example.com) for the fix.
New in version 3.6.2:
- Fixed the !logfd check. Thanks to Alexander Wolgast for pointing
- Added support for reporting rusage/return code after executing
- Changed logging to use close-on-exec flag of file descriptor, so
it can be left open for reporting rusage if enabled.
- Added support for reporting approximate elapsed execution
time of a cgi script.
New in version 3.6.1:
- Fixed the UserInFile routine. It broke cause I forgot to remove
New in version 3.6:
- Removed check for ./ in the path of the script. The check for
../ is still there. There doesn't seem to be any need for this check as
it appears to be harmless. It is being removed to allow for users with
"./" in their home dir (for chrooting with wuftpd) to be able to use cgiwrap.
- Added code to optionally prevent script execution if the
script is group or world writable. I cannot make the check for world
writable forced on, since on my site using AFS, the permission bits
aren't used, and some scripts might be marked as world writable. Can't
break user scripts without a major hassle.
- Added code to optionally check if script file is a symbolic
link. Of course, the script dir itself could still be a symbolic link.
- Changed to GNU autoconf for configuration
- Makefile now supports 'install' target with --install-path is
specified with configure.
- Support added for setting PATH and TZ environment variables
before executing script
- Support added for setting a bunch of different RLIMIT_ parameters
before executing script, as well as allowing the administrator to set the
limits with the --with-rlimit-*=value option to configure.
- Error messages are now more verbose and output in HTML if possible.
- Support for calling script using system() has been removed as it is
not really needed for anything, and just slows things down.
- Fixed malloc() error check in GetUserDir routines
- Fixed race condition with permissions and opening of log file
- initgroups() and setgroups() support now enabled by default
- Eliminated buffer overrun in error message about chmod'ing
script. Thanks to Duncan Simpson (firstname.lastname@example.org)
- Added --with-minimum-uid option
- Fixed the subdirectory restrict option. (Thanks to Jeffery
Chow ) for pointing this out and for testing the fix.
- Added CondenseSlashes routine to eliminate doubled and
- Added SafeMalloc routine to eliminate the need to check
malloc result throughout the code.
- Changed tardist target to touch all files and directories
so that a consistent time stamp is reached. This should eliminate spurious
calls to autoheader when building cgiwrap.
- Added in code to configure.in for the various information options
such as local-site-url, local-contact-phone, etc.
- Added fcntl.h include, needed by open(). Problem reported by
Seth Chaiklin . Also fixed quoting in the configure.in related
to log file.
- Finished splitting up logging functions and changes to use the
- Minor changes to the makefile, including telling it to use
the CFLAGS, and improving the tardist target.
- Moved extra flag stuff for AFS into it's own section and only
run it if needed for AFS support.
- Not sure why, but 3.6 works with AIX 4, 3.5 did not.
- Cleaned up Makefile, finished support for building in a
separate directory from the source, added a 'dep' target using depend.awk
from mutt distribution.
- Fixed problem with CHECKHOST/CHECKHOSTS typos.
- Added support for using "*" with checkhost support to restrict
ALL userids from being accessed from that host. (*@x.x.x.x/y.y.y.y)
- Made 'no way to change uids' a compile time error with #error
- Fixed bug with ALLOWFILE define in util.c.
New in version 3.5:
- Fixed strerror checking in Configure script and util.c for systems
without strerror, can now use strerror, sys_errlist, perror, or just errno.
- Major documentation overhaul, create all HTML based docs
- Added option (defaulting to yes) to correctly set the
PATH_TRANSLATED environment variable.
- Fixed bug with the configure script and the use_system
option. It would cause a preprocessor error if the system call was not
- Cleaned up various things with the Configure script
- Changed file prompting to allow using ~ paths.
New in version 3.4:
- Fixed typo "&" instead of "&&" in setgroups stuff
- Added cgiwrap.aliases option to rewrite home dirs of users.
- Moved entire cgiwrap source build tree to CVS, will make
tracking changes easier.
- CGIwrap now changes directories to the directory the script is located in before executing the script. Before, it always just changed
to the main CGI directory. This behavior is only different if you
were using scripts in subdirectories.
- Changed style of cgiwrap.allow, cgiwrap.deny files to be the same as
cron's allow/deny files.
New in version 3.3:
- Added support for attaching a label to syslog log messages.
- Added code to rewrite the PATH_TRANSLATED environment variable.
New in version 3.24:
- Added support for logging to syslog.
New in version 3.23:
- Setgroups was being used no matter what you said in configure - fixed
- Problem with undefined variables in Log call for subdirectories - fixed
- Removed declaration of sys_errlist, and errno in util.c, since I don't
think they were necessary. And they were causing problems on some
- Added in user contributed host address checking code
- Upgraded to using dist-3.0 PL60 for building the Configure script.
- Separated initgroups() and setgroups() checks into two separate
defines, and improved documentation in configure script for these options.
New in version 3.22:
- argv is now automatically changed to the name of the script that is
New in version 3.21:
- Rlimit defines weren't set properly when rlimit not available - fixed
- The optimizer/debugger flag wasn't being used in the makefile -- fixed
- Defaults for checks (y/n) were not being set - fixed
New in version 3.2:
- MAJOR code cleanup and simplification. The code should be ALOT
easier to read and understand.
- Fixed the problem in the Makefile on certain architectures with the
$(var) not being escaped properly. This should solve problems with Linux
machines and BSD machines that I know of.
- Changes way PATH_INFO is modified, CGIwrap will now correct SCRIPT_NAME
for ?user=USER&script=SCRIPT type requests as well as /user/script type
- Subdirectories are now supported for both types of requests
- Debugging output has been condensed and is a little easier to read.
- Documentation has been reworked, it should be a little easier to use.
- Fixed prototypes for all the functions in the cgiwrap source.
- Removed a few unnecessary routines
- Changed "mystrcpy" to be "strdup", and is compiled only if the current
architecture does not have strdup available in it's standard library.
New in version 3.11:
- Fixed incorrectly indented # directives that were causing problems with
New in version 3.1:
- Added CONF_ALLOWFILE and CONF_DENYFILE options.
- Added logging of REMOTE_USER and a status message to the log file
- Added an unsupported directory for user contributed scripts and add-ons
- Restructured logic for which 'set' method gets used.
- Removed option to not check if gid changed, it was an oversight that
this was left in. There isn't any case I know of that you wouldn't want
to check this.
- Moved id setting routines into util.c
- Added new source file for allow/deny code.
- Removed some error output that didn't make sense (system error
messages that were getting returned when I issued a regular cgiwrap error)
- Added a 'remake' target to the makefile which does a clean, then a
Configure -S, then a make all to rebuild he entire binary. This is useful
if you have multiple config.sh files (eg. you're building for several
setups from the same dir)
New in version 3.0:
- Set up Configure scripts for CGIwrap
- Renamed many of the config options to make more consistent
- Rearranged directory structure of CGIwrap distribution
- Removed "CONF_SANITIZE" option, it is always on now.
- Removed "CONF_CHECK_UID" option, it is always on now.
- Removed "CONF_FORCE_DEBUG" option, and "CONF_DEBUG_BY_NAME" option,
cgiwrap automatically does debugging output by name now.
- Added info about setting up an access-controlled cgiwrap which allows
users to control access to their scripts.
- Renamed DEBUG to CONF_DEBUG to solve a compile problem with some systems
wanting to add -DDEBUG to CFLAGS.
New in version 2.7:
- Added HTTPD_USER and CHECK_HTTPD_USER to verify that cgiwrap is being
called by the server. This is for (access to scripts) security, it
doesn't affect system security any.
- Added AFS PAG support
New in version 2.6:
- Moved rlimit call into new subroutine SetLimits
- Changed exec call to an execv and passed argv to support argument passing
This will only work correctly for scripts called with no other
arguments... Eg, must use "cgiwrap/user/script?" syntax
New in version 2.5:
- Fixed problem with not correctly falling back from PATH_INFO
- Added SETUID_SETEUID option for setting UID's
- Added checks to make sure effective ugid changed as well as real.
New in version 2.4:
- Fixed incorrect exec call, added null at end.
New in version 2.3:
- Fixed location of setgroups() call
- Added INSTALL file and fixed PROMO that was old.
New in version 2.2:
- More debug outpt for environment variables
- Option to check exec bit on script and error msg if not set
New in version 2.1:
- Fixed ~ bug
- Added PATH_INFO and SCRIPT_NAME rewrite code
- Added SETGROUPS option to config
- Added RLIMIT option to config
New in version 2.0:
- Added support for PATH_INFO specification of user/script
- Added stderr redirection to stdout
- Added option for doing debugging output by cmd name
- Added option to use exec or system calls
New in version 1.0:
- Everything! This is the first public distribution.