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Revision 6 - (show annotations) (download)
Fri Nov 19 22:11:38 2004 UTC (9 years, 10 months ago) by ferringb
File size: 12675 byte(s)
entry regarding cvs shift, and the beast being autotooled.

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

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