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Revision 75 - (show annotations) (download)
Wed May 4 23:35:39 2005 UTC (9 years, 3 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 19070 byte(s)
We create libctest.c via configure, so no need to keep it around.  Do some
cleanup related to libctest.c and libctest during configure.

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

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