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Revision 75 - (hide annotations) (download)
Wed May 4 23:35:39 2005 UTC (9 years, 6 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 19070 byte(s)
We create libctest.c via configure, so no need to keep it around.  Do some
cleanup related to libctest.c and libctest during configure.

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

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