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Revision 56 - (show annotations) (download)
Thu Apr 28 23:43:32 2005 UTC (9 years, 4 months ago) by azarah
File size: 17548 byte(s)
Do not check for (*&#$(* CXX or F77.

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

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