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Revision 77 - (show annotations) (download)
Mon May 9 18:00:45 2005 UTC (9 years, 4 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 19327 byte(s)
Fix typo (sizeof -> strlen).

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

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