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Revision 24 - (show annotations) (download)
Sun Dec 5 05:42:10 2004 UTC (9 years, 4 months ago) by ferringb
File size: 13279 byte(s)
should make things compile again

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

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