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Revision 31 - (hide annotations) (download)
Wed Mar 2 09:18:01 2005 UTC (9 years, 9 months ago) by azarah
Original Path: trunk/ChangeLog
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Fix symbols.in not added to dist.

1 ferringb 2 # ChangeLog for Path Sandbox
2     # Copyright 1999-2004 Gentoo Foundation; Distributed under the GPL v2
3     # $Header$
4    
5 azarah 31 02 May 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
6     Fix symbols.in not added to dist.
7    
8 azarah 29 02 May 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
9 azarah 30 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
10     White space fixes.
11    
12     02 May 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
13     configure.in, getcwd.c, libsandbox.c, symbols.in:
14 azarah 29 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
15     getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
16     for glibc and other libc's that use this. Update libsandbox.c to use these
17     symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
18     process unset it.
19    
20 ferringb 28 01 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
21     killed off _init and _fini in favor of
22     void __attribute__ ((constructor)) init_func and
23     void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
24    
25 ferringb 26 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
26     canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
27     having the hick-ups.
28    
29 ferringb 24 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
30     Makefile.am: Fixed compilation.
31    
32 ferringb 18 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
33     Gutted the bugger so it stops checking for a c++ and fortran compiler.
34     Do *not* regenerate aclocal.m4 for making a release until a better
35     solution is created.
36    
37 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
38     Removal of more hardcoded paths.
39    
40 ferringb 13 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
41     sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
42    
43     19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
44 ferringb 6 Sandbox is now autotooled, create-localdecls needs to be killed and the code
45     shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
46     are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
47     To get to a point of testing, automake && autoconf; created requisite files w/
48     a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
49     /lib and /usr/lib/portage/bin.
50    
51 ferringb 2 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
52     closing out bug #70225, potential overflow of the sandbox_pids_file var.
53    
54     07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
55     (think it was at least) allows intermixing of code and data segments. bug #70351
56     should be fixed by this.
57    
58     03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
59     futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
60    
61     02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
62     Seth Robertson that tracked down all adjuct flags for read operations that
63     do not invoke a write operation.
64    
65     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
66     Another fix from jstubbs regarding a free() on a stack variable for the
67     environment -- tracking now prevents extraneous free()'s segfault.
68    
69     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
70     J. Stubbs tracked down a new bug where mkdir was failing to the patch on
71     the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
72     Also remove the errno = ESUCCESS settings as documentation points out that
73     a library isn't allowed to do that.
74    
75     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
76     file_security_check() function to check random potential exploits on files
77     that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
78     the 'system-crippling' exploits (bug 21923) and catches a few other
79     potential problems.
80    
81     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
82     32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
83    
84     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
85     bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
86     Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
87    
88     29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
89     Fix permissions and group of pids file and logs. Permissions should be 0664
90     and group should be 'portage'. Bug #34260.
91    
92     28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
93     Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
94     to the real execve (in our execve wrapper). Seems that on some arches (sparc
95     among others) do not allow us to tamper with the readonly copy passed to
96     execve, so pass our own copy of the environment. Bug #42290.
97    
98     11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
99     Changed tail to head and added a notice about duration of glibc check.
100    
101     21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
102     Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
103     as there isn't a guarentee that it is dynamic.
104    
105     02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
106     If 'file' passed to before_syscall(const char *func, const char *file) is
107     invalid, we should set errno to ENOENT, and not EINVAL. This should
108     close bug #32238.
109    
110     14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
111     Fix a bug that occurs mainly on 64bit arch, where the file passed to
112     the functions we wrap, is invalid, and then cause canonicalize to pass
113     garbage to before_syscall(), thanks to great detective work from
114     Andrea Luzzardi <al@sig11.org> (bug #29846).
115    
116     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
117     Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
118    
119     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
120     Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
121     only checked the destination patch, and not the source, so we could move
122     a protected file to a unprotected directory, and then delete/modify it.
123     Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
124    
125     12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
126     Added python2.3 to the predict section/variable.
127    
128     28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
129     sandbox.h, sandbox_futils.c :
130     Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
131     it is not set, it will revert to its old value.
132    
133     27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
134     Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
135     rather than failing with a violation, bug #29748.
136    
137     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
138     Fix canonicalize() to ignore calls with path = "".
139    
140     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
141     sandbox_futils.c, canonicalize.c :
142     Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
143     call handled strings larger than PATH_MAX (bug #21766). It however does not
144     work the same on 2.4 kernels.
145    
146     To fix, I added the posix implementation of getcwd() (from glibc cvs) that
147     do not need the system call. We use the default getcwd() function via a
148     wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
149     means the current directory was removed, OR that the the system call for
150     getcwd failed (curious is that it do not fail and return NULL or set
151     errno, but rather just truncate the retured directory - usually from the
152     start), and if so, we use the generic getcwd() function (__egetcwd). Note
153     that we do not use the generic version all the time, as it calls lstat()
154     a great number of times, and performance degrade much.
155    
156     29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
157     libsandbox.c :
158     Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
159    
160     22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
161     create-localdecls :
162     When checking path names of files accessed, we need to canonicalize it, else
163     it may be a symlink in a 'write allowed' directory pointing to a file in a
164     directory we should not have write access to.
165    
166     With something like coreutils-5.0, we have two problems:
167     1) One of the tests checks if getcwd() can return a path longer than
168     PATH_MAX. This test then tries to create a dir which even while
169     created local (mkdir("conftest2")), it ends up being resolved with
170     a name that is much larger than PATH_MAX. The problem now is that
171     canonicalize() have undefined behaviour when the path was too long
172     (returned wrongly truncated paths, etc), and pass the wrong path to
173     before_syscall() (causing the bogus sandbox violations).
174     2) The ecanonicalize() function we used, along with the canonicalize()
175     function did not support longer than PATH_MAX. This is partly a
176     cause for 1), but the error checking (rather lack of it) of calls
177     to erealpath() in canonicalize() was the prime reason for 1).
178    
179     As we do not use this canonicalized name to call the function, we resolve this
180     by fixing canonicalize() to do better error checking, and ecanonicalize() as
181     well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
182     While they will resolve paths properly now, and can check if a write/read is
183     allowed, the functions called from the sandboxed environment will still work
184     as expected.
185    
186     This should resolve bug #21766.
187    
188     06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
189     For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
190     it (bug #16298).
191    
192     Problem is that for some reason locale fopen's locale.alias with mode "rm".
193    
194     -------------------------------------------------------
195     nosferatu root # grep fopen locale.log
196     fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
197     nosferatu root #
198     --------------------------------------------------------
199    
200     I checked the source of locale, but it have fopen with mode 'r', so
201     not sure where the "rm" mode comes from. Anyhow, changed the check in
202     before_syscall_open_char() to also see mode "rm" as readonly.
203    
204     23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
205    
206     Add glibc-2.3 support.
207    
208     22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
209    
210     Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
211     operations releated to preload, as well as only try to modify ld.so.preload
212     if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
213     not using ld.so.preload. Fix to not write this instance of sandbox's pid
214     to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
215    
216     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
217    
218     Changed the LD to CC for hppa.
219    
220     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
221    
222     Killed the previous changes I made.
223    
224     17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
225    
226     Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
227    
228     09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
229    
230     Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
231    
232     16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
233    
234     Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
235     for this fix.
236    
237     4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
238    
239     sandbox_futils defined a dirname() function that was masking the same
240     function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
241     '/usr/lib/portage/bi/'). Fixed function to return expected results and
242     renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
243     11231.
244    
245     4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
246    
247     Fix a segfault in libsandbox.c if canonicalize() was called with
248     first parameter = NULL.
249    
250     1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
251    
252     Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
253     cleanup() for this.
254    
255     Change cleanup() in sandbox.c not to exit with fail status if
256     the pidsfile is missing. We really should still display sandbox
257     violations if they occured.
258    
259     31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
260    
261     Update cleanup() in sandbox.c to remove the PIDSFILE if this is
262     the last sandbox running.
263    
264     25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
265    
266     Major cleanups to mainly libsandbox.c again.
267    
268     22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
269    
270     Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
271     parties involved should please contact me so that we can fix it.
272    
273     Add opendir wrapper to libsandbox.c.
274    
275     21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
276    
277     Do some more cleanups to ecanonicalize(), as it dropped filenames in
278     rare cases (after my symlink cleanups), and caused glibc to bork.
279     These fixes went into canonicalize.c.
280    
281     20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
282    
283     Fix spawn_shell() and main() in sandbox.c to properly return fail
284     status.
285    
286     19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
287    
288     The new canonicalize() function in libsandbox.c also resolved symlinks,
289     which caused on cleaning sandbox errors if the symlink pointed to a
290     file in the live root. Ripped out canonicalize() and realpath() from
291     glibc; removed the symlink stuff, and changed them to ecanonicalize()
292     and erealpath().
293    
294     18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
295    
296     Ripped out all the wrappers, and implemented those of InstallWatch.
297     Losts of cleanups and bugfixes. Implement a execve that forces
298     $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
299     /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
300     sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
301     parts; it now have an install target.
302    
303     Reformat the whole thing to look somewhat like the reworked sandbox.c
304     and new sandbox.h and sandbox_futils.c from:
305    
306     Brad House <brad@mainstreetsoftworks.com>.
307    
308     Additional Copyrights now due to the InstallWatch code:
309    
310     Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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