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Revision 13 - (hide annotations) (download)
Sat Nov 20 13:05:24 2004 UTC (10 years, 1 month ago) by ferringb
File size: 12820 byte(s)
removed the /usr/lib/portage/ hardcoded reference for bashrc.

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

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