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Revision 16 - (show annotations) (download)
Sat Nov 20 13:21:37 2004 UTC (9 years, 11 months ago) by ferringb
Original Path: trunk/ChangeLog
File size: 12938 byte(s)
corrections to remove hardcoded paths.

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

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