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Revision 83 - (hide annotations) (download)
Wed May 11 15:36:36 2005 UTC (9 years, 5 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 19850 byte(s)
Remove ld.so.preload crap - we are not going to use it again.

1 ferringb 2 # ChangeLog for Path Sandbox
2 vapier 53 # Copyright 1999-2005 Gentoo Foundation; Distributed under the GPL v2
3 ferringb 2 # $Header$
4    
5 azarah 83 11 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h:
6     Remove ld.so.preload crap - we are not going to use it again.
7    
8 azarah 82 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox_futils.c:
9     Fix typo in code that checks if we got valid group information, causing a
10     segmentation fault, bug #91637.
11    
12 azarah 79 * sandbox-1.2.6 (2005/05/10)
13    
14 azarah 78 10 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
15     Do not use LD_PRELOAD if it contains libtsocks.so, as it breaks sandbox
16     for some odd reason, bug #91541.
17    
18 azarah 77 09 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
19     Fix typo (sizeof -> strlen).
20    
21 ferringb 76 08 May 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
22     rewrote the sbcontext caching code so it accounts for env changes since lib
23     initialization.
24    
25 azarah 75 05 May 2005; Martin Schlemmer <azarah@gentoo.org> configure.in, libctest.c:
26     We create libctest.c via configure, so no need to keep it around. Do some
27     cleanup related to libctest.c and libctest during configure.
28    
29 azarah 74 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
30     Add rename support of symlinks pointing to protected files/directories.
31    
32 azarah 72 * sandbox-1.2.5 (2005/05/04)
33    
34 azarah 71 04 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
35     sandbox.bashrc:
36     Do not reset already set LD_PRELOAD when starting sandbox. If LD_PRELOAD is
37     already set, init of the env vars fails for some reason, so do this later on,
38     and do not warn (bug #91431).
39    
40 azarah 70 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox.h,
41     sandbox.bashrc:
42     Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.
43    
44 azarah 68 * sandbox-1.2.4 (2005/05/03)
45    
46 azarah 66 03 May 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
47     Do not init the env entries with each call, as it creates too many calls to
48 azarah 67 lstat, etc. Should speedup things a bit, bug #91040.
49 azarah 66
50 azarah 65 03 May 2005; Martin Schlemmer <azarah@gentoo.org> sandbox.c:
51     Add /dev/pty to default write list. Noticed by Morfic.
52    
53 vapier 62 02 May 2005; Mike Frysinger <vapier@gentoo.org> configure.in, localdecls.h,
54     sandbox.h:
55     uClibc doesn't support dlvsym() so add a configure check to make sure it doesn't
56     exist. Also update localdecls.h so BROKEN_RTLD_NEXT isn't defined in uClibc.
57    
58 azarah 59 * sandbox-1.2.3 (2005/04/29)
59    
60 azarah 56 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> configure.in:
61     Do not check for (*&#$(* CXX or F77.
62    
63 azarah 54 29 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
64     Do not append '/' to pathname in filter_path() if it already ends with it.
65    
66 vapier 53 28 Apr 2005; Mike Frysinger <vapier@gentoo.org> Makefile.am, configure.in:
67     With az's help, clean up autotools to work with cross-compiling.
68    
69 azarah 59 * sandbox-1.2.2 (2005/04/28)
70 azarah 48
71 azarah 47 28 Apr 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
72     Only check for /dev/{null,zero} for unlink hack, else ricers using /dev/shm
73     have issues; bug #90592.
74    
75 azarah 59 * sandbox-1.2.1 (2005/04/23)
76 azarah 44
77 azarah 43 23 Apr 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
78     getcwd.c, libsandbox.c, localdecls.h, sandbox.h, sandbox_futils.c:
79     Make sure all functions used in libsandbox.c is declared static. Define
80     SB_STATIC in localdecls.h for this. Include sandbox_futils.c rather than
81     linking with its object. Hopefully this will fix bug #90153.
82    
83 azarah 59 * sandbox-1.2 (2005/04/23)
84 azarah 46
85 azarah 40 22 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
86     Allow lchown a symlink in write-allowed path pointing to write-denied
87     target.
88    
89 genone 39 21 Mar 2005; Marius Mauch <genone@gentoo.org> libsandbox.c:
90     Also show resolved symlink names in the log.
91    
92 azarah 37 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, libsandbox.c:
93     Seems -nostdlib was the problem with the constructor/destructor - remove it
94     from Makefile.am, and change the constructor/destructor names again.
95    
96 azarah 36 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
97     Also rename the _init() and _fini() declarations.
98    
99 azarah 35 14 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c:
100     Fixup the constructor/destructor function names again (they should be _init()
101     and _fini() it seems, and not being called caused sandbox_lib_path to be
102     unset, and thus breaking the execve() wrapper's LD_PRELOAD protection).
103     Add both the path in given SANDBOX_x variable, as well as its symlink
104     resolved path in init_env_entries(). Modify filter_path() to be able to
105     resolve paths without resolving symlinks, as well as to be able to resolve
106     symlinks. Fix a possible segfault in check_access(). Add symlink resolving
107     to check_access() resolving bug #31019. Add 'hack' for unlink, as the fix
108     for bug #31019 cause access violations if we try to remove a symlink that is
109     not in protected path, but points to a protected path. Fix a memory leak in
110     sandbox.c (sandbox_pids_file in main()). Fix the realpath() calls in main()
111     (sandbox.c) being unchecked. Fix the debug logname not having the pid in it
112     (pid_string was uninitialized). General syntax cleanups.
113    
114 ferringb 34 09 Mar 2005; Brian Harring <ferringb@gentoo.org> sandbox.c: Fixed the
115     infamous "pids file is not a regular file" w/out newline bug.
116    
117 ferringb 33 09 Mar 2005; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in:
118     Correct libc_version path detection, since it was screwing up if libdir !=
119     "/lib/".
120    
121     02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> libsandbox.c:
122 azarah 32 Hack to make sure sandboxed process cannot remove a device node, bug #79836.
123    
124 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am:
125 azarah 31 Fix symbols.in not added to dist.
126    
127 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
128 azarah 30 getcwd.c, libsandbox.c, sandbox.c, sandbox.h, sandbox_futils.c:
129     White space fixes.
130    
131 ferringb 33 02 Mar 2005; Martin Schlemmer <azarah@gentoo.org> Makefile.am, canonicalize.c,
132 azarah 30 configure.in, getcwd.c, libsandbox.c, symbols.in:
133 azarah 29 Fix inverse test logic in canonicalize.c, use a strncpy. Fix gcc warning in
134     getcwd.c. Add symbols.in and logic to Makefile.am to generate symbol versions
135     for glibc and other libc's that use this. Update libsandbox.c to use these
136     symbol versions if available. Fix exec wrapper to re-export LD_PRELOAD if the
137     process unset it.
138    
139 ferringb 33 01 Mar 2005; Brian Harring <ferringb@gentoo.org> libsandbox.c:
140 ferringb 28 killed off _init and _fini in favor of
141     void __attribute__ ((constructor)) init_func and
142     void __attribute__ ((destructor)) closing_func. _(init|func) were deprecated.
143    
144 ferringb 26 06 Dec 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, libsandbox.c,
145     canonicalize.c, getcwd.c: Fixed compilation *again*. Hopefully cvs is done
146     having the hick-ups.
147    
148 ferringb 24 04 Dec 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, getcwd.c,
149     Makefile.am: Fixed compilation.
150    
151 ferringb 18 01 Dec 2004; Brian Harring <ferringb@gentoo.org> aclocal.m4:
152     Gutted the bugger so it stops checking for a c++ and fortran compiler.
153     Do *not* regenerate aclocal.m4 for making a release until a better
154     solution is created.
155    
156 ferringb 16 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, sandbox_futils.c:
157     Removal of more hardcoded paths.
158    
159 ferringb 13 20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in,
160     sandbox_futils.c: tweaks to install sandbox.bashrc, and use it.
161    
162     19 Nov 2004; Brian Harring <ferringb@gentoo.org>:
163 ferringb 6 Sandbox is now autotooled, create-localdecls needs to be killed and the code
164     shifted into configure.in. Currently builds *one* libsandbox.so- if multiple
165     are desired (-m64 and -m32 for amd64), the ebuild should do it (imo).
166     To get to a point of testing, automake && autoconf; created requisite files w/
167     a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of
168     /lib and /usr/lib/portage/bin.
169    
170 ferringb 2 14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c:
171     closing out bug #70225, potential overflow of the sandbox_pids_file var.
172    
173     07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard,
174     (think it was at least) allows intermixing of code and data segments. bug #70351
175     should be fixed by this.
176    
177     03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c:
178     futils fix from bug #65201 via solar, and libsandbox log path checks via #69137
179    
180     02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from
181     Seth Robertson that tracked down all adjuct flags for read operations that
182     do not invoke a write operation.
183    
184     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
185     Another fix from jstubbs regarding a free() on a stack variable for the
186     environment -- tracking now prevents extraneous free()'s segfault.
187    
188     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c:
189     J. Stubbs tracked down a new bug where mkdir was failing to the patch on
190     the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir.
191     Also remove the errno = ESUCCESS settings as documentation points out that
192     a library isn't allowed to do that.
193    
194     04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a
195     file_security_check() function to check random potential exploits on files
196     that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes
197     the 'system-crippling' exploits (bug 21923) and catches a few other
198     potential problems.
199    
200     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for
201     32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work.
202    
203     20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c:
204     bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>.
205     Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>.
206    
207     29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c :
208     Fix permissions and group of pids file and logs. Permissions should be 0664
209     and group should be 'portage'. Bug #34260.
210    
211     28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
212     Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed
213     to the real execve (in our execve wrapper). Seems that on some arches (sparc
214     among others) do not allow us to tamper with the readonly copy passed to
215     execve, so pass our own copy of the environment. Bug #42290.
216    
217     11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls:
218     Changed tail to head and added a notice about duration of glibc check.
219    
220     21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls:
221     Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh
222     as there isn't a guarentee that it is dynamic.
223    
224     02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
225     If 'file' passed to before_syscall(const char *func, const char *file) is
226     invalid, we should set errno to ENOENT, and not EINVAL. This should
227     close bug #32238.
228    
229     14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
230     Fix a bug that occurs mainly on 64bit arch, where the file passed to
231     the functions we wrap, is invalid, and then cause canonicalize to pass
232     garbage to before_syscall(), thanks to great detective work from
233     Andrea Luzzardi <al@sig11.org> (bug #29846).
234    
235     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
236     Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>.
237    
238     13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
239     Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically
240     only checked the destination patch, and not the source, so we could move
241     a protected file to a unprotected directory, and then delete/modify it.
242     Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix.
243    
244     12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c :
245     Added python2.3 to the predict section/variable.
246    
247     28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c,
248     sandbox.h, sandbox_futils.c :
249     Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If
250     it is not set, it will revert to its old value.
251    
252     27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
253     Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so,
254     rather than failing with a violation, bug #29748.
255    
256     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
257     Fix canonicalize() to ignore calls with path = "".
258    
259     27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c,
260     sandbox_futils.c, canonicalize.c :
261     Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system
262     call handled strings larger than PATH_MAX (bug #21766). It however does not
263     work the same on 2.4 kernels.
264    
265     To fix, I added the posix implementation of getcwd() (from glibc cvs) that
266     do not need the system call. We use the default getcwd() function via a
267     wrapper (egetcwd), and then lstat the returned path. If lstat fails, it
268     means the current directory was removed, OR that the the system call for
269     getcwd failed (curious is that it do not fail and return NULL or set
270     errno, but rather just truncate the retured directory - usually from the
271     start), and if so, we use the generic getcwd() function (__egetcwd). Note
272     that we do not use the generic version all the time, as it calls lstat()
273     a great number of times, and performance degrade much.
274    
275     29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls,
276     libsandbox.c :
277     Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks.
278    
279     22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c
280     create-localdecls :
281     When checking path names of files accessed, we need to canonicalize it, else
282     it may be a symlink in a 'write allowed' directory pointing to a file in a
283     directory we should not have write access to.
284    
285     With something like coreutils-5.0, we have two problems:
286     1) One of the tests checks if getcwd() can return a path longer than
287     PATH_MAX. This test then tries to create a dir which even while
288     created local (mkdir("conftest2")), it ends up being resolved with
289     a name that is much larger than PATH_MAX. The problem now is that
290     canonicalize() have undefined behaviour when the path was too long
291     (returned wrongly truncated paths, etc), and pass the wrong path to
292     before_syscall() (causing the bogus sandbox violations).
293     2) The ecanonicalize() function we used, along with the canonicalize()
294     function did not support longer than PATH_MAX. This is partly a
295     cause for 1), but the error checking (rather lack of it) of calls
296     to erealpath() in canonicalize() was the prime reason for 1).
297    
298     As we do not use this canonicalized name to call the function, we resolve this
299     by fixing canonicalize() to do better error checking, and ecanonicalize() as
300     well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'.
301     While they will resolve paths properly now, and can check if a write/read is
302     allowed, the functions called from the sandboxed environment will still work
303     as expected.
304    
305     This should resolve bug #21766.
306    
307     06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c :
308     For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under
309     it (bug #16298).
310    
311     Problem is that for some reason locale fopen's locale.alias with mode "rm".
312    
313     -------------------------------------------------------
314     nosferatu root # grep fopen locale.log
315     fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias
316     nosferatu root #
317     --------------------------------------------------------
318    
319     I checked the source of locale, but it have fopen with mode 'r', so
320     not sure where the "rm" mode comes from. Anyhow, changed the check in
321     before_syscall_open_char() to also see mode "rm" as readonly.
322    
323     23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
324    
325     Add glibc-2.3 support.
326    
327     22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c :
328    
329     Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all
330     operations releated to preload, as well as only try to modify ld.so.preload
331     if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when
332     not using ld.so.preload. Fix to not write this instance of sandbox's pid
333     to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running.
334    
335     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile :
336    
337     Changed the LD to CC for hppa.
338    
339     22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
340    
341     Killed the previous changes I made.
342    
343     17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls :
344    
345     Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs.
346    
347     09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c :
348    
349     Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868.
350    
351     16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls :
352    
353     Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro>
354     for this fix.
355    
356     4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c :
357    
358     sandbox_futils defined a dirname() function that was masking the same
359     function in glibc and was broken (e.g.: SANDBOX_DIR was being set to
360     '/usr/lib/portage/bi/'). Fixed function to return expected results and
361     renamed it to sb_dirname() to no longer mask the glibc function. Closes bug
362     11231.
363    
364     4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> :
365    
366     Fix a segfault in libsandbox.c if canonicalize() was called with
367     first parameter = NULL.
368    
369     1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> :
370    
371     Fix my braindead 'return 1;' in a void function. Updated sandbox.c,
372     cleanup() for this.
373    
374     Change cleanup() in sandbox.c not to exit with fail status if
375     the pidsfile is missing. We really should still display sandbox
376     violations if they occured.
377    
378     31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
379    
380     Update cleanup() in sandbox.c to remove the PIDSFILE if this is
381     the last sandbox running.
382    
383     25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
384    
385     Major cleanups to mainly libsandbox.c again.
386    
387     22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
388    
389     Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the
390     parties involved should please contact me so that we can fix it.
391    
392     Add opendir wrapper to libsandbox.c.
393    
394     21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
395    
396     Do some more cleanups to ecanonicalize(), as it dropped filenames in
397     rare cases (after my symlink cleanups), and caused glibc to bork.
398     These fixes went into canonicalize.c.
399    
400     20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
401    
402     Fix spawn_shell() and main() in sandbox.c to properly return fail
403     status.
404    
405     19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
406    
407     The new canonicalize() function in libsandbox.c also resolved symlinks,
408     which caused on cleaning sandbox errors if the symlink pointed to a
409     file in the live root. Ripped out canonicalize() and realpath() from
410     glibc; removed the symlink stuff, and changed them to ecanonicalize()
411     and erealpath().
412    
413     18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> :
414    
415     Ripped out all the wrappers, and implemented those of InstallWatch.
416     Losts of cleanups and bugfixes. Implement a execve that forces
417     $LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared
418     /etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c,
419     sandbox.h and sandbox_futils.c. Rewrote the Makefile for most
420     parts; it now have an install target.
421    
422     Reformat the whole thing to look somewhat like the reworked sandbox.c
423     and new sandbox.h and sandbox_futils.c from:
424    
425     Brad House <brad@mainstreetsoftworks.com>.
426    
427     Additional Copyrights now due to the InstallWatch code:
428    
429     Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net>

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