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Revision 70 - (hide annotations) (download)
Tue May 3 21:43:50 2005 UTC (9 years, 3 months ago) by azarah
Original Path: trunk/ChangeLog
File size: 18393 byte(s)
Fixup sandbox and sandbox.bashrc to call bash with the proper .bashrc.

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

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