The _dbus_printf_string_upper_bound function in dbus/dbus-sysdeps-unix.c in D-Bus (aka DBus) 1.4.x before 1.4.26, 1.6.x before 1.6.12, and 1.7.x before 1.7.4 allows local users to cause a denial of service (service crash) via a crafted message.

The remote NewStart CGSL host, running version MAIN 6.02, has dbus packages installed that are affected by multiple vulnerabilities:

  - Unspecified vulnerability in the match_rule_equal function in bus/signals.c in D-Bus before 1.0.2 allows     local applications to remove match rules for other applications and cause a denial of service (lost     process messages). (CVE-2006-6107)

  - dbus-daemon in D-Bus before 1.0.3, and 1.1.x before 1.1.20, recognizes send_interface attributes in allow     directives in the security policy only for fully qualified method calls, which allows local users to     bypass intended access restrictions via a method call with a NULL interface. (CVE-2008-0595)

  - The _dbus_validate_signature_with_reason function (dbus-marshal-validate.c) in D-Bus (aka DBus) before     1.2.14 uses incorrect logic to validate a basic type, which allows remote attackers to spoof a signature     via a crafted key. NOTE: this is due to an incorrect fix for CVE-2008-3834. (CVE-2009-1189)

  - libdbus 1.5.x and earlier, when used in setuid or other privileged programs in X.org and possibly other     products, allows local users to gain privileges and execute arbitrary code via the DBUS_SYSTEM_BUS_ADDRESS     environment variable. NOTE: libdbus maintainers state that this is a vulnerability in the applications     that do not cleanse environment variables, not in libdbus itself: we do not support use of libdbus in     setuid binaries that do not sanitize their environment before their first call into libdbus.
    (CVE-2012-3524)

  - The _dbus_printf_string_upper_bound function in dbus/dbus-sysdeps-unix.c in D-Bus (aka DBus) 1.4.x before     1.4.26, 1.6.x before 1.6.12, and 1.7.x before 1.7.4 allows local users to cause a denial of service     (service crash) via a crafted message. (CVE-2013-2168)

  - The dbus-daemon in D-Bus 1.2.x through 1.4.x, 1.6.x before 1.6.20, and 1.8.x before 1.8.4, sends an     AccessDenied error to the service instead of a client when the client is prohibited from accessing the     service, which allows local users to cause a denial of service (initialization failure and exit) or     possibly conduct a side-channel attack via a D-Bus message to an inactive service. (CVE-2014-3477)

  - dbus 1.3.0 before 1.6.22 and 1.8.x before 1.8.6 allows local users to cause a denial of service     (disconnect) via a certain sequence of crafted messages that cause the dbus-daemon to forward a message     containing an invalid file descriptor. (CVE-2014-3533)

  - Off-by-one error in D-Bus 1.3.0 through 1.6.x before 1.6.24 and 1.8.x before 1.8.8, when running on a     64-bit system and the max_message_unix_fds limit is set to an odd number, allows local users to cause a     denial of service (dbus-daemon crash) or possibly execute arbitrary code by sending one more file     descriptor than the limit, which triggers a heap-based buffer overflow or an assertion failure.
    (CVE-2014-3635)

  - D-Bus 1.3.0 through 1.6.x before 1.6.24 and 1.8.x before 1.8.8 allows local users to (1) cause a denial of     service (prevention of new connections and connection drop) by queuing the maximum number of file     descriptors or (2) cause a denial of service (disconnect) via multiple messages that combine to have more     than the allowed number of file descriptors for a single sendmsg call. (CVE-2014-3636)

  - D-Bus 1.3.0 through 1.6.x before 1.6.24 and 1.8.x before 1.8.8 does not properly close connections for     processes that have terminated, which allows local users to cause a denial of service via a D-bus message     containing a D-Bus connection file descriptor. (CVE-2014-3637)

  - The bus_connections_check_reply function in config-parser.c in D-Bus before 1.6.24 and 1.8.x before 1.8.8     allows local users to cause a denial of service (CPU consumption) via a large number of method calls.
    (CVE-2014-3638)

  - The dbus-daemon in D-Bus before 1.6.24 and 1.8.x before 1.8.8 does not properly close old connections,     which allows local users to cause a denial of service (incomplete connection consumption and prevention of     new connections) via a large number of incomplete connections. (CVE-2014-3639)

  - D-Bus 1.3.0 through 1.6.x before 1.6.26, 1.8.x before 1.8.10, and 1.9.x before 1.9.2 allows local users to     cause a denial of service (prevention of new connections and connection drop) by queuing the maximum     number of file descriptors. NOTE: this vulnerability exists because of an incomplete fix for     CVE-2014-3636.1. (CVE-2014-7824)

  - D-Bus 1.4.x through 1.6.x before 1.6.30, 1.8.x before 1.8.16, and 1.9.x before 1.9.10 does not validate     the source of ActivationFailure signals, which allows local users to cause a denial of service (activation     failure error returned) by leveraging a race condition involving sending an ActivationFailure signal     before systemd responds. (CVE-2015-0245)

  - An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-     daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local     attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use     this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus     clients. (CVE-2020-12049)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Solaris system is missing necessary patches to address security updates :

  - The _dbus_printf_string_upper_bound function in     dbus/dbus-sysdeps-unix.c in D-Bus (aka DBus) 1.4.x     before 1.4.26, 1.6.x before 1.6.12, and 1.7.x before     1.7.4 allows local users to cause a denial of service     (service crash) via a crafted message. (CVE-2013-2168)

The DBUS-1 service and libraries were updated to upstream release 1.6.24 fixing security issues and bugs.

Upstream changes since dbus 1.6.8

  + 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     more 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 >= 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 which a malicious client     can make dbus-daemon disconnect a system service.
    (fdo#79694, fdo#80469, CVE-2014-3533; Alejandro     Mart&iacute;nez Su&aacute;rez, 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)

  - CVE-2013-2168: Fix misuse of va_list that could be used     as a denial of service for system services.
    Vulnerability reported by Alexandru Cornea. (Simon)

  + Other fixes

  - 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)

  - path_namespace='/' in match rules incorrectly matched     nothing; it now matches everything. (fdo#70799, Simon     McVittie)

  - Make dbus_connection_set_route_peer_messages(x, FALSE)     behave as documented. Previously, it assumed its second     parameter was TRUE. (fdo#69165, Chengwei Yang)

  - Fix a NULL pointer dereference on an unlikely error path     (fdo#69327, Sviatoslav Chagaev)

  - 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)

  - Fix compilation if writev() is unavailable (fdo#69409,     Vasiliy Balyasnyy)

  - Avoid an infinite busy-loop if a signal interrupts     waitpid() (fdo#68945, Simon McVittie)

  - Escape addresses containing non-ASCII characters     correctly (fdo#53499, 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 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)

  - Make 'make -j check' work (fdo#68852, Simon McVittie)

  - In dbus-daemon, don't crash if a .service file starts     with key=value (fdo#60853, Chengwei Yang)

  - Fix an assertion failure if we try to activate systemd     services before systemd connects to the bus (fdo#50199,     Chengwei Yang)

  - Avoid compiler warnings for ignoring the return from     write() (Chengwei Yang)

  - Following Unicode Corrigendum #9, the noncharacters     U+nFFFE, U+nFFFF, U+FDD0..U+FDEF are allowed in UTF-8     strings again. (fdo#63072, Simon McVittie)

  - Diagnose incorrect use of dbus_connection_get_data()     with negative slot (i.e. before allocating the slot)     rather than returning junk (fdo#63127, Dan Williams)

  - In the activation helper, when compiled for tests, do     not reset the system bus address, fixing the regression     tests. (fdo#52202, Simon)

  - Fix building with Valgrind 3.8, at the cost of causing     harmless warnings with Valgrind 3.6 on some compilers     (fdo#55932, Arun Raghavan)

  - Don't leak temporary fds pointing to /dev/null     (fdo#56927, Michel HERMIER)

  - Create session.d, system.d directories under CMake     (fdo#41319, Ralf Habacker)

  - Include alloca.h for alloca() if available, fixing     compilation on Solaris 10 (fdo#63071, Dagobert     Michelsen)

This dbus-1 update fixes a security vulnerability.

  - Added CVE-2013-2168.patch, fixes referenced     vulnerability (bnc#824607)

The remote host is affected by the vulnerability described in GLSA-201308-02 (D-Bus: Denial of Service)

    D-Bus&rsquo; _dbus_printf_string_upper_bound() function crashes if it       returns exactly 1024 bytes.
  Impact :

    A local attacker could provide specially crafted input to an application       using D-Bus which would cause _dbus_printf_string_upper_bound() to return       1024 bytes and crash, causing a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

Not tested locally yet, I need to spin back up a Fedora 18 VM.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

I tested locally by just booting; the fix itself is low risk, but this includes a new upstream version rebase.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

New dbus packages are available for Slackware 14.0, and -current to fix a security issue.

Updated dbus packages fix security vulnerability.

Alexandru Cornea discovered a vulnerability in libdbus caused by an implementation bug in _dbus_printf_string_upper_bound(). This vulnerability can be exploited by a local user to crash system services that use libdbus, causing denial of service. Depending on the dbus services running, it could lead to complete system crash (CVE-2013-2168).

Alexandru Cornea discovered a vulnerability in libdbus caused by an implementation bug in _dbus_printf_string_upper_bound(). This vulnerability can be exploited by a local user to crash system services that use libdbus, causing denial of service. Depending on the dbus services running, it could lead to complete system crash.

The oldstable distribution (squeeze) is not affected by this problem.

Alexandru Cornea discovered that DBus incorrectly handled certain messages. A local attacker could use this issue to cause system services to crash, resulting in a denial of service.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Simon McVittie reports :

Alexandru Cornea discovered a vulnerability in libdbus caused by an implementation bug in _dbus_printf_string_upper_bound(). This vulnerability can be exploited by a local user to crash system services that use libdbus, causing denial of service. It is platform-specific: x86-64 Linux is known to be affected.

ID	Name	Product	Family	Severity
167488	NewStart CGSL MAIN 6.02 : dbus Multiple Vulnerabilities (NS-SA-2022-0093)	Nessus	NewStart CGSL Local Security Checks	medium
80599	Oracle Solaris Third-Party Patch Update : dbus (cve_2013_2168_input_validation)	Nessus	Solaris Local Security Checks	low
77890	openSUSE Security Update : dbus-1 (openSUSE-SU-2014:1239-1)	Nessus	SuSE Local Security Checks	medium
75066	openSUSE Security Update : dbus-1 (openSUSE-SU-2013:1118-1)	Nessus	SuSE Local Security Checks	low
69453	GLSA-201308-02 : D-Bus: Denial of Service	Nessus	Gentoo Local Security Checks	low
67299	Fedora 18 : dbus-1.6.12-1.fc18 (2013-11198)	Nessus	Fedora Local Security Checks	low
67298	Fedora 19 : dbus-1.6.12-1.fc19 (2013-11142)	Nessus	Fedora Local Security Checks	low
67234	Slackware 14.0 / current : dbus (SSA:2013-191-01)	Nessus	Slackware Local Security Checks	low
66977	Mandriva Linux Security Advisory : dbus (MDVSA-2013:177)	Nessus	Mandriva Local Security Checks	low
66905	Debian DSA-2707-1 : dbus - denial of service	Nessus	Debian Local Security Checks	low
66892	Ubuntu 12.04 LTS / 12.10 / 13.04 : dbus vulnerability (USN-1874-1)	Nessus	Ubuntu Local Security Checks	low
66889	FreeBSD : dbus -- local dos (4e9e410b-d462-11e2-8d57-080027019be0)	Nessus	FreeBSD Local Security Checks	low

Detections

Analytics

CVE-2013-2168

medium

Tenable Plugins

medium

low

medium

low

low

low

low

low

low

low

low

low