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Revision 68 - (show annotations) (download)
Tue May 3 11:07:38 2005 UTC (9 years, 2 months ago) by azarah
Original Path: trunk/ChangeLog
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* sandbox-1.2.4

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

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