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Revision 13 - (show annotations) (download)
Sat Nov 20 13:05:24 2004 UTC (9 years, 7 months ago) by ferringb
File size: 12820 byte(s)
removed the /usr/lib/portage/ hardcoded reference for bashrc.

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

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