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Revision 26 - (show annotations) (download)
Mon Dec 6 21:42:51 2004 UTC (10 years ago) by ferringb
File size: 13459 byte(s)
hopefully cvs is done being stupid.  Compilation fixes, along w/ make dist fix.

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

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