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Revision 16 - (hide annotations) (download)
Sat Nov 20 13:21:37 2004 UTC (9 years, 8 months ago) by ferringb
Original Path: trunk/ChangeLog
File size: 12938 byte(s)
corrections to remove hardcoded paths.

1 ferringb 2 # ChangeLog for Path Sandbox
2     # Copyright 1999-2004 Gentoo Foundation; Distributed under the GPL v2
3     # $Header$
4    
5 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
6     Removal of more hardcoded paths.
7    
8 ferringb 13 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 ferringb 6 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 ferringb 2 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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