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Revision 70 - (show annotations) (download)
Tue May 3 21:43:50 2005 UTC (9 years, 2 months ago) by azarah
File size: 18393 byte(s)
Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.

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

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