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Sat Apr 23 21:03:40 2005 UTC (9 years, 6 months ago) by azarah
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Add sandbox-1.2 release comment to ChangeLog

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

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