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# ChangeLog for Path Sandbox |
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# Copyright 1999-2004 Gentoo Foundation; Distributed under the GPL v2 |
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# $Header$ |
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|
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20 Nov 2004; Brian Harring <ferringb@gentoo.org> Makefile.am, configure.in, |
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sandbox_futils.c: tweaks to install sandbox.bashrc, and use it. |
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19 Nov 2004; Brian Harring <ferringb@gentoo.org>: |
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Sandbox is now autotooled, create-localdecls needs to be killed and the code |
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shifted into configure.in. Currently builds *one* libsandbox.so- if multiple |
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are desired (-m64 and -m32 for amd64), the ebuild should do it (imo). |
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To get to a point of testing, automake && autoconf; created requisite files w/ |
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a(utomake|clocal)-1.8, and autoconf 2.59. Installs to /usr/, instead of |
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/lib and /usr/lib/portage/bin. |
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14 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox.c: |
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closing out bug #70225, potential overflow of the sandbox_pids_file var. |
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07 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c: c99 standard, |
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(think it was at least) allows intermixing of code and data segments. bug #70351 |
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should be fixed by this. |
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03 Nov 2004; Brian Harring <ferringb@gentoo.org> libsandbox.c, sandbox_futils.c: |
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futils fix from bug #65201 via solar, and libsandbox log path checks via #69137 |
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02 Aug 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Code from |
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Seth Robertson that tracked down all adjuct flags for read operations that |
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do not invoke a write operation. |
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04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c: |
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Another fix from jstubbs regarding a free() on a stack variable for the |
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environment -- tracking now prevents extraneous free()'s segfault. |
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04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c, sandbox.c: |
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J. Stubbs tracked down a new bug where mkdir was failing to the patch on |
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the lstat in mkdir... it now only returns 0 or -1 as documented for mkdir. |
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Also remove the errno = ESUCCESS settings as documentation points out that |
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a library isn't allowed to do that. |
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|
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04 Apr 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: Added a |
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file_security_check() function to check random potential exploits on files |
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that sandbox is to load and read -- Normally sandboxpids.tmp. This fixes |
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the 'system-crippling' exploits (bug 21923) and catches a few other |
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potential problems. |
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20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> Makefile: Updates for |
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32/64 bit sandbox. Made CC and LD '?=' values to allow passed in CC to work. |
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20 Mar 2004; Nicholas Jones <carpaski@gentoo.org> libsandbox.c: |
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bug 42048 -- Fixed the lstat/errno conditions for mkdir <caleb@g.o>. |
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Added the 64/32 bit sandbox patch for AMD64 bug 32963 <brad/azarah>. |
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29 Feb 2004; Martin Schlemmer <azarah@gentoo.org> sandbox.c, sandbox_futils.c : |
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Fix permissions and group of pids file and logs. Permissions should be 0664 |
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and group should be 'portage'. Bug #34260. |
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28 Feb 2004; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Besides a small cleanup, redo how we replace LD_PRELOAD in the environ passed |
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to the real execve (in our execve wrapper). Seems that on some arches (sparc |
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among others) do not allow us to tamper with the readonly copy passed to |
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execve, so pass our own copy of the environment. Bug #42290. |
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11 Jan 2004; Nicholas Jones <carpaski@gentoo.org> create-decls: |
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Changed tail to head and added a notice about duration of glibc check. |
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21 Dec 2003; Nicholas Jones <carpaski@gentoo.org> create-decls: |
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Changed the glibc subversion check to use /usr/bin/* instead of /bin/sh |
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as there isn't a guarentee that it is dynamic. |
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02 Nov 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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If 'file' passed to before_syscall(const char *func, const char *file) is |
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invalid, we should set errno to ENOENT, and not EINVAL. This should |
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close bug #32238. |
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14 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Fix a bug that occurs mainly on 64bit arch, where the file passed to |
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the functions we wrap, is invalid, and then cause canonicalize to pass |
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garbage to before_syscall(), thanks to great detective work from |
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Andrea Luzzardi <al@sig11.org> (bug #29846). |
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13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls : |
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Add a uClibc detection patch from Peter S. Mazinger <ps.m@gmx.net>. |
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13 Oct 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Fix a bug in libsandbox.c 's checking in the rename wrapper - it basically |
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only checked the destination patch, and not the source, so we could move |
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a protected file to a unprotected directory, and then delete/modify it. |
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Thanks to Andrea Luzzardi (scox) <al@sig11.org>, bug #30992, for this fix. |
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12 Oct 2003; Nicholas Jones <carpaski@gentoo.org> sandbox.c : |
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Added python2.3 to the predict section/variable. |
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28 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, sandbox.c, |
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sandbox.h, sandbox_futils.c : |
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Add support to set the pids file via SANDBOX_PIDS_FILE at startup. If |
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it is not set, it will revert to its old value. |
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27 Sep 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Fix our mkdir wrapper to check if the dir exist, and return EEXIST if so, |
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rather than failing with a violation, bug #29748. |
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27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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Fix canonicalize() to ignore calls with path = "". |
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27 Jul 2003; Martin Schlemmer <azarah@gentoo.org> getcwd.c, libsandbox.c, |
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sandbox_futils.c, canonicalize.c : |
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Once again coreutils fails, as my systems had 2.5 kernel, the getcwd system |
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call handled strings larger than PATH_MAX (bug #21766). It however does not |
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work the same on 2.4 kernels. |
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To fix, I added the posix implementation of getcwd() (from glibc cvs) that |
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do not need the system call. We use the default getcwd() function via a |
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wrapper (egetcwd), and then lstat the returned path. If lstat fails, it |
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means the current directory was removed, OR that the the system call for |
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getcwd failed (curious is that it do not fail and return NULL or set |
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errno, but rather just truncate the retured directory - usually from the |
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start), and if so, we use the generic getcwd() function (__egetcwd). Note |
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that we do not use the generic version all the time, as it calls lstat() |
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a great number of times, and performance degrade much. |
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29 Jun 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls, |
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libsandbox.c : |
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Make sure SB_PATH_MAX will not wrap. Fix two possible memory leaks. |
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22 Jun 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c, canonicalize.c |
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create-localdecls : |
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When checking path names of files accessed, we need to canonicalize it, else |
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it may be a symlink in a 'write allowed' directory pointing to a file in a |
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directory we should not have write access to. |
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With something like coreutils-5.0, we have two problems: |
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1) One of the tests checks if getcwd() can return a path longer than |
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PATH_MAX. This test then tries to create a dir which even while |
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created local (mkdir("conftest2")), it ends up being resolved with |
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a name that is much larger than PATH_MAX. The problem now is that |
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canonicalize() have undefined behaviour when the path was too long |
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(returned wrongly truncated paths, etc), and pass the wrong path to |
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before_syscall() (causing the bogus sandbox violations). |
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2) The ecanonicalize() function we used, along with the canonicalize() |
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function did not support longer than PATH_MAX. This is partly a |
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cause for 1), but the error checking (rather lack of it) of calls |
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to erealpath() in canonicalize() was the prime reason for 1). |
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As we do not use this canonicalized name to call the function, we resolve this |
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by fixing canonicalize() to do better error checking, and ecanonicalize() as |
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well as all functions in libsandbox.c to use a PATH_MAX of 'PATH_MAX * 2'. |
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While they will resolve paths properly now, and can check if a write/read is |
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allowed, the functions called from the sandboxed environment will still work |
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as expected. |
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This should resolve bug #21766. |
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06 Apr 2003; Martin Schlemmer <azarah@gentoo.org> libsandbox.c : |
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For some reason sandbox fails with a 'open_wr' if you run 'locale -a' under |
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it (bug #16298). |
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Problem is that for some reason locale fopen's locale.alias with mode "rm". |
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------------------------------------------------------- |
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nosferatu root # grep fopen locale.log |
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fopen("/usr/share/locale/locale.alias", "rm"ACCESS DENIED open_wr: /usr/share/locale/locale.alias |
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nosferatu root # |
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-------------------------------------------------------- |
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I checked the source of locale, but it have fopen with mode 'r', so |
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not sure where the "rm" mode comes from. Anyhow, changed the check in |
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before_syscall_open_char() to also see mode "rm" as readonly. |
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23 Feb 2003; Martin Schlemmer <azarah@gentoo.org> create-localdecls : |
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Add glibc-2.3 support. |
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22 Feb 2003; Martin Schlemmer <azarah@gentoo.org> sandbox.c : |
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Some /etc/ld.so.preload fixes. Just changed the #if defines to cover all |
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operations releated to preload, as well as only try to modify ld.so.preload |
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if we can. Also modify to write the pid to /tmp/sandboxpids.tmp even when |
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not using ld.so.preload. Fix to not write this instance of sandbox's pid |
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to /tmp/sandboxpids.tmp on exit if this is not the last sandbox running. |
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22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> Makefile : |
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Changed the LD to CC for hppa. |
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22 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls : |
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Killed the previous changes I made. |
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17 Feb 2003; Nicholas Jones <carpaski@gentoo.org> create-localdecls : |
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Added parisc to BROKEN_RTLD_ARCHLIST to see if it we can fix the relocation probs. |
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09 Jan 2003; J Robert Ray <jrray@gentoo.org> sandbox.c : |
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Don't segfault if $HOME isn't set, set $HOME to "/" instead. Fixes bug 10868. |
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16 Dec 2002; Martin Schlemmer <azarah@gentoo.org> create-localdecls : |
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Fix memory leak for mips, bug #12236. Thanks to Torgeir Hansen <torgeir@trenger.ro> |
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for this fix. |
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4 Dec 2002; J Robert Ray <jrray@gentoo.org> sandbox.h sandbox_futils.c : |
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sandbox_futils defined a dirname() function that was masking the same |
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function in glibc and was broken (e.g.: SANDBOX_DIR was being set to |
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'/usr/lib/portage/bi/'). Fixed function to return expected results and |
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renamed it to sb_dirname() to no longer mask the glibc function. Closes bug |
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11231. |
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4 Dec 2002; Martin Schlemmer <azarah@gentoo.org> : |
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Fix a segfault in libsandbox.c if canonicalize() was called with |
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first parameter = NULL. |
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1 Sep 2002; Martin Schlemmer <azarah@gentoo.org> : |
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Fix my braindead 'return 1;' in a void function. Updated sandbox.c, |
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cleanup() for this. |
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Change cleanup() in sandbox.c not to exit with fail status if |
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the pidsfile is missing. We really should still display sandbox |
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violations if they occured. |
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31 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
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Update cleanup() in sandbox.c to remove the PIDSFILE if this is |
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the last sandbox running. |
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25 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
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Major cleanups to mainly libsandbox.c again. |
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22 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
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Add copyrights to sandbox.h and sandbox_futils.h. If wrong, the |
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parties involved should please contact me so that we can fix it. |
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Add opendir wrapper to libsandbox.c. |
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21 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
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Do some more cleanups to ecanonicalize(), as it dropped filenames in |
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rare cases (after my symlink cleanups), and caused glibc to bork. |
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These fixes went into canonicalize.c. |
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20 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
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Fix spawn_shell() and main() in sandbox.c to properly return fail |
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status. |
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19 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
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The new canonicalize() function in libsandbox.c also resolved symlinks, |
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which caused on cleaning sandbox errors if the symlink pointed to a |
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file in the live root. Ripped out canonicalize() and realpath() from |
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glibc; removed the symlink stuff, and changed them to ecanonicalize() |
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and erealpath(). |
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18 Aug 2002; Martin Schlemmer <azarah@gentoo.org> : |
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Ripped out all the wrappers, and implemented those of InstallWatch. |
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Losts of cleanups and bugfixes. Implement a execve that forces |
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$LIBSANDBOX in $LD_PRELOAD. We can now thus do away with the feared |
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/etc/ld.so.preload (*g*) ... Made the needed changes to sandbox.c, |
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sandbox.h and sandbox_futils.c. Rewrote the Makefile for most |
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parts; it now have an install target. |
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Reformat the whole thing to look somewhat like the reworked sandbox.c |
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and new sandbox.h and sandbox_futils.c from: |
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Brad House <brad@mainstreetsoftworks.com>. |
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Additional Copyrights now due to the InstallWatch code: |
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Copyright (C) 1998-9 Pancrazio `Ezio' de Mauro <p@demauro.net> |
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