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Revision 72 - (show annotations) (download)
Wed May 4 15:01:12 2005 UTC (9 years, 5 months ago) by azarah
File size: 18710 byte(s)
* sandbox-1.2.5

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

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