openSUSE Security Update: dbus-1: security and bugfix update to 1.8 ______________________________________________________________________________ Announcement ID: openSUSE-SU-2014:1228-1 Rating: moderate References: #896453 Cross-References: CVE-2012-3524 CVE-2014-3635 CVE-2014-3636 CVE-2014-3637 CVE-2014-3638 CVE-2014-3639 Affected Products: openSUSE 13.1 ______________________________________________________________________________ An update that fixes 6 vulnerabilities is now available. Description: DBUS-1 was upgraded to upstream release 1.8. This brings the version of dbus to the latest stable release from an unstable snapshot 1.7.4 that is know to have several regressions - Upstream changes since 1.7.4: + Security fixes: - Do not accept an extra fd in the padding of a cmsg message, which could lead to a 4-byte heap buffer overrun. (CVE-2014-3635, fdo#83622; Simon McVittie) - Reduce default for maximum Unix file descriptors passed per message from 1024 to 16, preventing a uid with the default maximum number of connections from exhausting the system bus' file descriptors under Linux's default rlimit. Distributors or system administrators with a restrictive fd limit may wish to reduce these limits further. Additionally, on Linux this prevents a second denial of service in which the dbus-daemon can be made to exceed the maximum number of fds per sendmsg() and disconnect the process that would have received them. (CVE-2014-3636, fdo#82820; Alban Crequy) - Disconnect connections that still have a fd pending unmarshalling after a new configurable limit, pending_fd_timeout (defaulting to 150 seconds), removing the possibility of creating an abusive connection that cannot be disconnected by setting up a circular reference to a connection's file descriptor. (CVE-2014-3637, fdo#80559; Alban Crequy) - Reduce default for maximum pending replies per connection from 8192 to 128, mitigating an algorithmic complexity denial-of-service attack (CVE-2014-3638, fdo#81053; Alban Crequy) - Reduce default for authentication timeout on the system bus from 30 seconds to 5 seconds, avoiding denial of service by using up all unauthenticated connection slots; and when all unauthenticated connection slots are used up, make new connection attempts block instead of disconnecting them. (CVE-2014-3639, fdo#80919; Alban Crequy) - On Linux >0 2.6.37-rc4, if sendmsg() fails with ETOOMANYREFS, silently drop the message. This prevents an attack in which a malicious client can make dbus-daemon disconnect a system service, which is a local denial of service. (fdo#80163, CVE-2014-3532; Alban Crequy) - Track remaining Unix file descriptors correctly when more than one message in quick succession contains fds. This prevents another attack in which a malicious client can make dbus-daemon disconnect a system service. (fdo#79694, fdo#80469, CVE-2014-3533; Alejandro Martínez Suárez, Simon McVittie, Alban Crequy) - Alban Crequy at Collabora Ltd. discovered and fixed a denial-of-service flaw in dbus-daemon, part of the reference implementation of D-Bus. Additionally, in highly unusual environments the same flaw could lead to a side channel between processes that should not be able to communicate. (CVE-2014-3477, fdo#78979) + Other fixes and enhancements: - Check for libsystemd from systemd >= 209, falling back to the older separate libraries if not found (Umut Tezduyar Lindskog, Simon McVittie) - On Linux, use prctl() to disable core dumps from a test executable that deliberately raises SIGSEGV to test dbus-daemon's handling of that condition (fdo#83772, Simon McVittie) - Fix compilation with --enable-stats (fdo#81043, Gentoo #507232; Alban Crequy) - Improve documentation for running tests on Windows (fdo#41252, Ralf Habacker) - When dbus-launch --exit-with-session starts a dbus-daemon but then cannot attach to a session, kill the dbus-daemon as intended (fdo#74698, Роман Донченко) - in the CMake build system, add some hints for Linux users cross-compiling Windows D-Bus binaries to be able to run tests under Wine (fdo#41252, Ralf Habacker) - add Documentation key to dbus.service (fdo#77447, Cameron Norman) - in "dbus-uuidgen --ensure", try to copy systemd's /etc/machine-id to /var/lib/dbus/machine-id instead of generating an entirely new ID (fdo#77941, Simon McVittie) - if dbus-launch receives an X error very quickly, do not kill unrelated processes (fdo#74698, Роман Донченко) - on Windows, allow up to 8K connections to the dbus-daemon, instead of the previous 64 (fdo#71297; Cristian Onet, Ralf Habacker) - cope with \r\n newlines in regression tests, since on Windows, dbus-daemon.exe uses text mode (fdo#75863, Руслан Ижбулатов) - Enhance the CMake build system to check for GLib and compile/run a subset of the regression tests (fdo#41252, fdo#73495; Ralf Habacker) - don't rely on va_copy(), use DBUS_VA_COPY() wrapper (fdo#72840, Ralf Habacker) - fix compilation of systemd journal support on older systemd versions where sd-journal.h doesn't include syslog.h (fdo#73455, Ralf Habacker) - fix compilation on older MSVC versions by including stdlib.h (fdo#73455, Ralf Habacker) - Allow to appear in an included configuration file (fdo#73475, Matt Hoosier) - If the tests crash with an assertion failure, they no longer default to blocking for a debugger to be attached. Set DBUS_BLOCK_ON_ABORT in the environment if you want the old behaviour. - To improve debuggability, the dbus-daemon and dbus-daemon-eavesdrop tests can be run with an external dbus-daemon by setting DBUS_TEST_DAEMON_ADDRESS in the environment. Test-cases that require an unusually-configured dbus-daemon are skipped. - don't require messages with no INTERFACE to be dispatched (fdo#68597, Simon McVittie) - document "tcp:bind=..." and "nonce-tcp:bind=..." (fdo#72301, Chengwei Yang) - define "listenable" and "connectable" addresses, and discuss the difference (fdo#61303, Simon McVittie) - support printing Unix file descriptors in dbus-send, dbus-monitor (fdo#70592, Robert Ancell) - don't install systemd units if --disable-systemd is given (fdo#71818, Chengwei Yang) - don't leak memory on out-of-memory while listing activatable or active services (fdo#71526, Radoslaw Pajak) - fix undefined behaviour in a regression test (fdo#69924, DreamNik) - escape Unix socket addresses correctly (fdo#46013, Chengwei Yang) - on SELinux systems, don't assume that SECCLASS_DBUS, DBUS__ACQUIRE_SVC and DBUS__SEND_MSG are numerically equal to their values in the reference policy (fdo#88719, osmond sun) - define PROCESS_QUERY_LIMITED_INFORMATION if missing from MinGW < 4 headers (fdo#71366, Matt Fischer) - define WIN32_LEAN_AND_MEAN to avoid conflicts between winsock.h and winsock2.h (fdo#71405, Matt Fischer) - do not return failure from _dbus_read_nonce() with no error set, preventing a potential crash (fdo#72298, Chengwei Yang) - on BSD systems, avoid some O(1)-per-process memory and fd leaks in kqueue, preventing test failures (fdo#69332, fdo#72213; Chengwei Yang) - fix warning spam on Hurd by not trying to set SO_REUSEADDR on Unix sockets, which doesn't do anything anyway on at least Linux and FreeBSD (fdo#69492, Simon McVittie) - fix use of TCP sockets on FreeBSD and Hurd by tolerating EINVAL from sendmsg() with SCM_CREDS (retrying with plain send()), and looking for credentials more correctly (fdo#69492, Simon McVittie) - ensure that tests run with a temporary XDG_RUNTIME_DIR to avoid getting mixed up in XDG/systemd "user sessions" (fdo#61301, Simon McVittie) - refresh cached policy rules for existing connections when bus configuration changes (fdo#39463, Chengwei Yang) - If systemd support is enabled, libsystemd-journal is now required. - When activating a non-systemd service under systemd, annotate its stdout/stderr with its bus name in the Journal. Known limitation: because the socket is opened before forking, the process will still be logged as if it had dbus-daemon's process ID and user ID. (fdo#68559, Chengwei Yang) - Document more configuration elements in dbus-daemon(1) (fdo#69125, Chengwei Yang) - Don't leak string arrays or fds if dbus_message_iter_get_args_valist() unpacks them and then encounters an error (fdo#21259, Chengwei Yang) - If compiled with libaudit, retain CAP_AUDIT_WRITE so we can write disallowed method calls to the audit log, fixing a regression in 1.7.6 (fdo#49062, Colin Walters) - path_namespace='/' in match rules incorrectly matched nothing; it now matches everything. (fdo#70799, Simon McVittie) - Directory change notification via dnotify on Linux is no longer supported; it hadn't compiled successfully since 2010 in any case. If you don't have inotify (Linux) or kqueue (*BSD), you will need to send SIGHUP to the dbus-daemon when its configuration changes. (fdo#33001, Chengwei Yang) - Compiling with --disable-userdb-cache is no longer supported; it didn't work since at least 2008, and would lead to an extremely slow dbus-daemon even it worked. (fdo#15589, fdo#17133, fdo#66947; Chengwei Yang) - The DBUS_DISABLE_ASSERTS CMake option didn't actually disable most assertions. It has been renamed to DBUS_DISABLE_ASSERT to be consistent with the Autotools build system. (fdo#66142, Chengwei Yang) - --with-valgrind=auto enables Valgrind instrumentation if and only if valgrind headers are available. The default is still --with-valgrind=no. (fdo#56925, Simon McVittie) - Platforms with no 64-bit integer type are no longer supported. (fdo#65429, Simon McVittie) - GNU make is now (documented to be) required. (fdo#48277, Simon McVittie) - Full test coverage no longer requires dbus-glib, although the tests do not exercise the shared library (only a static copy) if dbus-glib is missing. (fdo#68852, Simon McVittie) - D-Bus Specification 0.22 * Document GetAdtAuditSessionData() and GetConnectionSELinuxSecurityContext() (fdo#54445, Simon) * Fix example .service file (fdo#66481, Chengwei Yang) * Don't claim D-Bus is "low-latency" (lower than what?), just give factual statements about it supporting async use (fdo#65141, Justin Lee) * Document the contents of .service files, and the fact that system services' filenames are constrained (fdo#66608; Simon McVittie, Chengwei Yang) - Be thread-safe by default on all platforms, even if dbus_threads_init_default() has not been called. For compatibility with older libdbus, library users should continue to call dbus_threads_init_default(): it is harmless to do so. (fdo#54972, Simon McVittie) - Add GetConnectionCredentials() method (fdo#54445, Simon) - New API: dbus_setenv(), a simple wrapper around setenv(). Note that this is not thread-safe. (fdo#39196, Simon) - Add dbus-send --peer=ADDRESS (connect to a given peer-to-peer connection, like --address=ADDRESS in previous versions) and dbus-send --bus=ADDRESS (connect to a given bus, like dbus-monitor --address=ADDRESS). dbus-send --address still exists for backwards compatibility, but is no longer documented. (fdo#48816, Andrey Mazo) - "dbus-daemon --nofork" is allowed on Windows again. (fdo#68852, Simon McVittie) - Avoid an infinite busy-loop if a signal interrupts waitpid() (fdo#68945, Simon McVittie) - Clean up memory for parent nodes when objects are unexported (fdo#60176, Thomas Fitzsimmons) - Make dbus_connection_set_route_peer_messages(x, FALSE) behave as documented. Previously, it assumed its second parameter was TRUE. (fdo#69165, Chengwei Yang) - Escape addresses containing non-ASCII characters correctly (fdo#53499, Chengwei Yang) - Document <servicedir> search order correctly (fdo#66994, Chengwei Yang) - Don't crash on "dbus-send --session / x.y.z" which regressed in 1.7.4. (fdo#65923, Chengwei Yang) - If malloc() returns NULL in _dbus_string_init() or similar, don't free an invalid pointer if the string is later freed (fdo#65959, Chengwei Yang) - If malloc() returns NULL in dbus_set_error(), don't va_end() a va_list that was never va_start()ed (fdo#66300, Chengwei Yang) - fix build failure with --enable-stats (fdo#66004, Chengwei Yang) - fix a regression test on platforms with strict alignment (fdo#67279, Colin Walters) - Avoid calling function parameters "interface" since certain Windows headers have a namespace-polluting macro of that name (fdo#66493, Ivan Romanov) - Assorted Doxygen fixes (fdo#65755, Chengwei Yang) - Various thread-safety improvements to static variables (fdo#68610, Simon McVittie) - Make "make -j check" work (fdo#68852, Simon McVittie) - Fix a NULL pointer dereference on an unlikely error path (fdo#69327, Sviatoslav Chagaev) - Improve valgrind memory pool tracking (fdo#69326, Sviatoslav Chagaev) - Don't over-allocate memory in dbus-monitor (fdo#69329, Sviatoslav Chagaev) - dbus-monitor can monitor dbus-daemon < 1.5.6 again (fdo#66107, Chengwei Yang) - If accept4() fails with EINVAL, as it can on older Linux kernels with newer glibc, try accept() instead of going into a busy-loop. (fdo#69026, Chengwei Yang) - If socket() or socketpair() fails with EINVAL or EPROTOTYPE, for instance on Hurd or older Linux with a new glibc, try without SOCK_CLOEXEC. (fdo#69073; Pino Toscano, Chengwei Yang) - Fix a file descriptor leak on an error code path. (fdo#69182, Sviatoslav Chagaev) - dbus-run-session: clear some unwanted environment variables (fdo#39196, Simon) - dbus-run-session: compile on FreeBSD (fdo#66197, Chengwei Yang) - Don't fail the autolaunch test if there is no DISPLAY (fdo#40352, Simon) - Use dbus-launch from the builddir for testing, not the installed copy (fdo#37849, Chengwei Yang) - Fix compilation if writev() is unavailable (fdo#69409, Vasiliy Balyasnyy) - Remove broken support for LOCAL_CREDS credentials passing, and document where each credential-passing scheme is used (fdo#60340, Simon McVittie) - Make autogen.sh work on *BSD by not assuming GNU coreutils functionality fdo#35881, fdo#69787; Chengwei Yang) - dbus-monitor: be portable to NetBSD (fdo#69842, Chengwei Yang) - dbus-launch: stop using non-portable asprintf (fdo#37849, Simon) - Improve error reporting from the setuid activation helper (fdo#66728, Chengwei Yang) - Remove unavailable command-line options from 'dbus-daemon --help' (fdo#42441, Ralf Habacker) - Add support for looking up local TCPv4 clients' credentials on Windows XP via the undocumented AllocateAndGetTcpExTableFromStack function (fdo#66060, Ralf Habacker) - Fix insufficient dependency-tracking (fdo#68505, Simon McVittie) - Don't include wspiapi.h, fixing a compiler warning (fdo#68852, Simon McVittie) - add DBUS_ENABLE_ASSERT, DBUS_ENABLE_CHECKS for less confusing conditionals (fdo#66142, Chengwei Yang) - improve verbose-mode output (fdo#63047, Colin Walters) - consolidate Autotools and CMake build (fdo#64875, Ralf Habacker) - fix various unused variables, unusual build configurations etc. (fdo#65712, fdo#65990, fdo#66005, fdo#66257, fdo#69165, fdo#69410, fdo#70218; Chengwei Yang, Vasiliy Balyasnyy) - dbus-cve-2014-3533.patch: Add patch for CVE-2014-3533 to fix (fdo#63127) • CVE-2012-3524: Don't access environment variables (fdo#52202) (fdo#51521, Dave Reisner) • Remove an incorrect assertion from DBusTransport (fdo#51657, (fdo#51406, Simon McVittie) (fdo#51032, Simon McVittie) (fdo#34671, Simon McVittie) · Check for libpthread under CMake on Unix (fdo#47237, Simon McVittie) spec-compliance (fdo#48580, David Zeuthen) non-root when using OpenBSD install(1) (fdo#48217, Antoine Jacoutot) (fdo#45896, Simon McVittie) (fdo#39549, Simon McVittie) invent their own "union of everything" type (fdo#11191, Simon find(1) (fdo#33840, Simon McVittie) (fdo#46273, Alban Crequy) again on Win32, but not on WinCE (fdo#46049, Simon (fdo#47321, Andoni Morales Alastruey) (fdo#39231, fdo#41012; Simon McVittie) * Add a regression test for fdo#38005 (fdo#39836, Simon McVittie) a service file entry for activation (fdo#39230, Simon McVittie) (fdo#24317, #34870; Will Thompson, David Zeuthen, Simon McVittie) and document it better (fdo#31818, Will Thompson) • Let the bus daemon implement more than one interface (fdo#33757, • Optimize _dbus_string_replace_len to reduce waste (fdo#21261, (fdo#35114, Simon McVittie) • Add dbus_type_is_valid as public API (fdo#20496, Simon McVittie) to unknown interfaces in the bus daemon (fdo#34527, Lennart Poettering) (fdo#32245; Javier Jardón, Simon McVittie) • Correctly give XDG_DATA_HOME priority over XDG_DATA_DIRS (fdo#34496, in embedded environments (fdo#19997, NB#219964; Simon McVittie) • Install the documentation, and an index for Devhelp (fdo#13495, booleans when sending them (fdo#16338, NB#223152; Simon McVittie) errors to dbus-shared.h (fdo#34527, Lennart Poettering) data (fdo#10887, Simon McVittie) .service files (fdo#19159, Sven Herzberg) (fdo#35750, Colin Walters) (fdo#32805, Mark Brand) which could result in a busy-loop (fdo#32992, NB#200248; possibly • Fix failure to detect abstract socket support (fdo#29895) (fdo#32262, NB#180486) • Improve some error code paths (fdo#29981, fdo#32264, fdo#32262, fdo#33128, fdo#33277, fdo#33126, NB#180486) • Avoid possible symlink attacks in /tmp during compilation (fdo#32854) • Tidy up dead code (fdo#25306, fdo#33128, fdo#34292, NB#180486) • Improve gcc malloc annotations (fdo#32710) • Documentation improvements (fdo#11190) • Avoid readdir_r, which is difficult to use correctly (fdo#8284, fdo#15922, LP#241619) • Cope with invalid files in session.d, system.d (fdo#19186, • Don't distribute generated files that embed our builddir (fdo#30285, fdo#34292) (fdo#33474, LP#381063) with lcov HTML reports and --enable-compiler-coverage (fdo#10887) · support credentials-passing (fdo#32542) · opt-in to thread safety (fdo#33464) Patch Instructions: To install this openSUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product: - openSUSE 13.1: zypper in -t patch openSUSE-2014-558 To bring your system up-to-date, use "zypper patch". Package List: - openSUSE 13.1 (i586 x86_64): dbus-1-1.8.8-4.20.2 dbus-1-debuginfo-1.8.8-4.20.2 dbus-1-debugsource-1.8.8-4.20.1 dbus-1-devel-1.8.8-4.20.1 dbus-1-x11-1.8.8-4.20.2 dbus-1-x11-debuginfo-1.8.8-4.20.2 dbus-1-x11-debugsource-1.8.8-4.20.2 libdbus-1-3-1.8.8-4.20.1 libdbus-1-3-debuginfo-1.8.8-4.20.1 - openSUSE 13.1 (x86_64): dbus-1-debuginfo-32bit-1.8.8-4.20.2 dbus-1-devel-32bit-1.8.8-4.20.1 libdbus-1-3-32bit-1.8.8-4.20.1 libdbus-1-3-debuginfo-32bit-1.8.8-4.20.1 - openSUSE 13.1 (noarch): dbus-1-devel-doc-1.8.8-4.20.2 References: http://support.novell.com/security/cve/CVE-2012-3524.html http://support.novell.com/security/cve/CVE-2014-3635.html http://support.novell.com/security/cve/CVE-2014-3636.html http://support.novell.com/security/cve/CVE-2014-3637.html http://support.novell.com/security/cve/CVE-2014-3638.html http://support.novell.com/security/cve/CVE-2014-3639.html https://bugzilla.suse.com/show_bug.cgi?id=896453