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Revision 84 - (show annotations) (download)
Wed May 11 15:39:13 2005 UTC (9 years, 2 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 19995 byte(s)
Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.

1 # ChangeLog for Path Sandbox
2 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 # $Header$
4
5 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
6 Remove USE_SYSTEM_SHELL stuff, as it is not secure, and not in use.
7
8 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
9 Remove ld.so.preload crap - we are not going to use it again.
10
11 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
12 Fix typo in code that checks if we got valid group information, causing a
13 segmentation fault, bug #91637.
14
15 * sandbox-1.2.6 (2005/05/10)
16
17 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
18 Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
19 for some odd reason, bug #91541.
20
21 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
22 Fix typo (sizeof -> strlen).
23
24 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
25 rewrote the sbcontext caching code so it accounts for env changes since lib
26 initialization.
27
28 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
29 We create libctest.c via configure, so no need to keep it around. Do some
30 cleanup related to libctest.c and libctest during configure.
31
32 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
33 Add rename support of symlinks pointing to protected files/directories.
34
35 * sandbox-1.2.5 (2005/05/04)
36
37 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
38 sandbox.bashrc:
39 Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
40 already set, init of the env vars fails for some reason, so do this later on,
41 and do not warn (bug #91431).
42
43 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
44 sandbox.bashrc:
45 Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
46
47 * sandbox-1.2.4 (2005/05/03)
48
49 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
50 Do not init the env entries with each call, as it creates too many calls to
51 lstat, etc. Should speedup things a bit, bug #91040.
52
53 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
54 Add /dev/pty to default write list. Noticed by Morfic.
55
56 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
57 sandbox.h:
58 uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
59 exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
60
61 * sandbox-1.2.3 (2005/04/29)
62
63 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
64 Do not check for (*&#$(* CXX or F77.
65
66 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
67 Do not append '/' to pathname in filter_path() if it already ends with it.
68
69 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
70 With az's help, clean up autotools to work with cross-compiling.
71
72 * sandbox-1.2.2 (2005/04/28)
73
74 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
75 Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
76 have issues; bug #90592.
77
78 * sandbox-1.2.1 (2005/04/23)
79
80 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
81 getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
82 Make sure all functions used in libsandbox.c is declared static. Define
83 SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
84 linking with its object. Hopefully this will fix bug #90153.
85
86 * sandbox-1.2 (2005/04/23)
87
88 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
89 Allow lchown a symlink in write-allowed path pointing to write-denied
90 target.
91
92 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
93 Also show resolved symlink names in the log.
94
95 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
96 Seems -nostdlib was the problem with the constructor/destructor - remove it
97 from Makefile.am, and change the constructor/destructor names again.
98
99 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
100 Also rename the _init() and _fini() declarations.
101
102 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
103 Fixup the constructor/destructor function names again (they should be _init()
104 and _fini() it seems, and not being called caused sandbox_lib_path to be
105 unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
106 Add both the path in given SANDBOX_x variable, as well as its symlink
107 resolved path in init_env_entries(). Modify filter_path() to be able to
108 resolve paths without resolving symlinks, as well as to be able to resolve
109 symlinks. Fix a possible segfault in check_access(). Add symlink resolving
110 to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
111 for bug #31019 cause access violations if we try to remove a symlink that is
112 not in protected path, but points to a protected path. Fix a memory leak in
113 sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
114 (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
115 (pid_string was uninitialized). General syntax cleanups.
116
117 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
118 infamous "pids file is not a regular file" w/out newline bug.
119
120 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
121 Correct libc_version path detection, since it was screwing up if libdir !=
122 "/lib/".
123
124 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
125 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
126
127 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
128 Fix symbols.in not added to dist.
129
130 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
131 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
132 White space fixes.
133
134 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
135 configure.in, getcwd.c, libsandbox.c, symbols.in:
136 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
137 getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
138 for glibc and other libc's that use this. Update libsandbox.c to use these
139 symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
140 process unset it.
141
142 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
143 killed off _init and _fini in favor of
144 void __attribute__ ((constructor)) init_func and
145 void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
146
147 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
148 canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
149 having the hick-ups.
150
151 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
152 Makefile.am: Fixed compilation.
153
154 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
155 Gutted the bugger so it stops checking for a c++ and fortran compiler.
156 Do *not* regenerate aclocal.m4 for making a release until a better
157 solution is created.
158
159 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
160 Removal of more hardcoded paths.
161
162 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
163 sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
164
165 19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
166 Sandbox is now autotooled, create-localdecls needs to be killed and the code
167 shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
168 are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
169 To get to a point of testing, automake && autoconf; created requisite files w/
170 a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
171 /lib and /usr/lib/portage/bin.
172
173 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
174 closing out bug #70225, potential overflow of the sandbox_pids_file var.
175
176 07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
177 (think it was at least) allows intermixing of code and data segments. bug #70351
178 should be fixed by this.
179
180 03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
181 futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
182
183 02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
184 Seth Robertson that tracked down all adjuct flags for read operations that
185 do not invoke a write operation.
186
187 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
188 Another fix from jstubbs regarding a free() on a stack variable for the
189 environment -- tracking now prevents extraneous free()'s segfault.
190
191 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
192 J. Stubbs tracked down a new bug where mkdir was failing to the patch on
193 the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
194 Also remove the errno = ESUCCESS settings as documentation points out that
195 a library isn't allowed to do that.
196
197 04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
198 file_security_check() function to check random potential exploits on files
199 that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
200 the 'system-crippling' exploits (bug 21923) and catches a few other
201 potential problems.
202
203 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
204 32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
205
206 20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
207 bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
208 Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
209
210 29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
211 Fix permissions and group of pids file and logs. Permissions should be 0664
212 and group should be 'portage'. Bug #34260.
213
214 28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
215 Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
216 to the real execve (in our execve wrapper). Seems that on some arches (sparc
217 among others) do not allow us to tamper with the readonly copy passed to
218 execve, so pass our own copy of the environment. Bug #42290.
219
220 11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
221 Changed tail to head and added a notice about duration of glibc check.
222
223 21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
224 Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
225 as there isn't a guarentee that it is dynamic.
226
227 02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
228 If 'file' passed to before_syscall(const char *func, const char *file) is
229 invalid, we should set errno to ENOENT, and not EINVAL. This should
230 close bug #32238.
231
232 14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
233 Fix a bug that occurs mainly on 64bit arch, where the file passed to
234 the functions we wrap, is invalid, and then cause canonicalize to pass
235 garbage to before_syscall(), thanks to great detective work from
236 Andrea Luzzardi <al@sig11.org> (bug #29846).
237
238 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
239 Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
240
241 13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
242 Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
243 only checked the destination patch, and not the source, so we could move
244 a protected file to a unprotected directory, and then delete/modify it.
245 Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
246
247 12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
248 Added python2.3 to the predict section/variable.
249
250 28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
251 sandbox.h, sandbox_futils.c :
252 Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
253 it is not set, it will revert to its old value.
254
255 27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
256 Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
257 rather than failing with a violation, bug #29748.
258
259 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
260 Fix canonicalize() to ignore calls with path = "".
261
262 27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
263 sandbox_futils.c, canonicalize.c :
264 Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
265 call handled strings larger than PATH_MAX (bug #21766). It however does not
266 work the same on 2.4 kernels.
267
268 To fix, I added the posix implementation of getcwd() (from glibc cvs) that
269 do not need the system call. We use the default getcwd() function via a
270 wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
271 means the current directory was removed, OR that the the system call for
272 getcwd failed (curious is that it do not fail and return NULL or set
273 errno, but rather just truncate the retured directory - usually from the
274 start), and if so, we use the generic getcwd() function (__egetcwd). Note
275 that we do not use the generic version all the time, as it calls lstat()
276 a great number of times, and performance degrade much.
277
278 29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
279 libsandbox.c :
280 Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
281
282 22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
283 create-localdecls :
284 When checking path names of files accessed, we need to canonicalize it, else
285 it may be a symlink in a 'write allowed' directory pointing to a file in a
286 directory we should not have write access to.
287
288 With something like coreutils-5.0, we have two problems:
289 1) One of the tests checks if getcwd() can return a path longer than
290 PATH_MAX. This test then tries to create a dir which even while
291 created local (mkdir("conftest2")), it ends up being resolved with
292 a name that is much larger than PATH_MAX. The problem now is that
293 canonicalize() have undefined behaviour when the path was too long
294 (returned wrongly truncated paths, etc), and pass the wrong path to
295 before_syscall() (causing the bogus sandbox violations).
296 2) The ecanonicalize() function we used, along with the canonicalize()
297 function did not support longer than PATH_MAX. This is partly a
298 cause for 1), but the error checking (rather lack of it) of calls
299 to erealpath() in canonicalize() was the prime reason for 1).
300
301 As we do not use this canonicalized name to call the function, we resolve this
302 by fixing canonicalize() to do better error checking, and ecanonicalize() as
303 well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
304 While they will resolve paths properly now, and can check if a write/read is
305 allowed, the functions called from the sandboxed environment will still work
306 as expected.
307
308 This should resolve bug #21766.
309
310 06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
311 For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
312 it (bug #16298).
313
314 Problem is that for some reason locale fopen's locale.alias with mode "rm".
315
316 -------------------------------------------------------
317 nosferatu root # grep fopen locale.log
318 fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
319 nosferatu root #
320 --------------------------------------------------------
321
322 I checked the source of locale, but it have fopen with mode 'r', so
323 not sure where the "rm" mode comes from. Anyhow, changed the check in
324 before_syscall_open_char() to also see mode "rm" as readonly.
325
326 23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
327
328 Add glibc-2.3 support.
329
330 22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
331
332 Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
333 operations releated to preload, as well as only try to modify ld.so.preload
334 if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
335 not using ld.so.preload. Fix to not write this instance of sandbox's pid
336 to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
337
338 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
339
340 Changed the LD to CC for hppa.
341
342 22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
343
344 Killed the previous changes I made.
345
346 17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
347
348 Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
349
350 09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
351
352 Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
353
354 16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
355
356 Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
357 for this fix.
358
359 4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
360
361 sandbox_futils defined a dirname() function that was masking the same
362 function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
363 '/usr/lib/portage/bi/'). Fixed function to return expected results and
364 renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
365 11231.
366
367 4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
368
369 Fix a segfault in libsandbox.c if canonicalize() was called with
370 first parameter = NULL.
371
372 1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
373
374 Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
375 cleanup() for this.
376
377 Change cleanup() in sandbox.c not to exit with fail status if
378 the pidsfile is missing. We really should still display sandbox
379 violations if they occured.
380
381 31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
382
383 Update cleanup() in sandbox.c to remove the PIDSFILE if this is
384 the last sandbox running.
385
386 25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
387
388 Major cleanups to mainly libsandbox.c again.
389
390 22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
391
392 Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
393 parties involved should please contact me so that we can fix it.
394
395 Add opendir wrapper to libsandbox.c.
396
397 21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
398
399 Do some more cleanups to ecanonicalize(), as it dropped filenames in
400 rare cases (after my symlink cleanups), and caused glibc to bork.
401 These fixes went into canonicalize.c.
402
403 20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
404
405 Fix spawn_shell() and main() in sandbox.c to properly return fail
406 status.
407
408 19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
409
410 The new canonicalize() function in libsandbox.c also resolved symlinks,
411 which caused on cleaning sandbox errors if the symlink pointed to a
412 file in the live root. Ripped out canonicalize() and realpath() from
413 glibc; removed the symlink stuff, and changed them to ecanonicalize()
414 and erealpath().
415
416 18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
417
418 Ripped out all the wrappers, and implemented those of InstallWatch.
419 Losts of cleanups and bugfixes. Implement a execve that forces
420 $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
421 /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
422 sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
423 parts; it now have an install target.
424
425 Reformat the whole thing to look somewhat like the reworked sandbox.c
426 and new sandbox.h and sandbox_futils.c from:
427
428 Brad House <brad@mainstreetsoftworks.com>.
429
430 Additional Copyrights now due to the InstallWatch code:
431
432 Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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