- Update to 1.8.12\\r\\n* Fixes various CVE's

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.

The remote NewStart CGSL host, running version MAIN 6.06, has dbus packages installed that are affected by multiple vulnerabilities:

  - dbus before 1.10.28, 1.12.x before 1.12.16, and 1.13.x before 1.13.12, as used in DBusServer in Canonical     Upstart in Ubuntu 14.04 (and in some, less common, uses of dbus-daemon), allows cookie spoofing because of     symlink mishandling in the reference implementation of DBUS_COOKIE_SHA1 in the libdbus library. (This only     affects the DBUS_COOKIE_SHA1 authentication mechanism.) A malicious client with write access to its own     home directory could manipulate a ~/.dbus-keyrings symlink to cause a DBusServer with a different uid to     read and write in unintended locations. In the worst case, this could result in the DBusServer reusing a     cookie that is known to the malicious client, and treating that cookie as evidence that a subsequent     client connection came from an attacker-chosen uid, allowing authentication bypass. (CVE-2019-12749)

  - 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)

  - 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)

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

Simon MvVittie reports :

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.

dbus-1 was updated to fix a possible DoS (CVE-2014-3477).

Several vulnerabilities have been discovered in dbus, an asynchronous inter-process communication system. The Common Vulnerabilities and Exposures project identifies the following problems :

  - CVE-2014-3477     Alban Crequy at Collabora Ltd. discovered that     dbus-daemon sends an AccessDenied error to the service     instead of a client when the client is prohibited from     accessing the service. A local attacker could use this     flaw to cause a bus-activated service that is not     currently running to attempt to start, and fail, denying     other users access to this service.

  - CVE-2014-3532     Alban Crequy at Collabora Ltd. discovered a bug in     dbus-daemon's support for file descriptor passing. A     malicious process could force system services or user     applications to be disconnected from the D-Bus system by     sending them a message containing a file descriptor,     leading to a denial of service.

  - CVE-2014-3533     Alban Crequy at Collabora Ltd. and Alejandro Martinez     Suarez discovered that a malicious process could force     services to be disconnected from the D-Bus system by     causing dbus-daemon to attempt to forward invalid file     descriptors to a victim process, leading to a denial of     service.

Updated dbus packages fix multiple vulnerabilities :

A denial of service vulnerability in D-Bus before 1.6.20 allows a local attacker to cause a bus-activated service that is not currently running to attempt to start, and fail, denying other users access to this service 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).

A flaw was reported in D-Bus's file descriptor passing feature. A local attacker could use this flaw to cause a service or application to disconnect from the bus, typically resulting in that service or application exiting (CVE-2014-3532).

A flaw was reported in D-Bus's file descriptor passing feature. A local attacker could use this flaw to cause an invalid file descriptor to be forwarded to a service or application, causing it to disconnect from the bus, typically resulting in that service or application exiting (CVE-2014-3533).

On 64-bit platforms, file descriptor passing could be abused by local users to cause heap corruption in dbus-daemon, leading to a crash, or potentially to arbitrary code execution (CVE-2014-3635).

A denial-of-service vulnerability in dbus-daemon allowed local attackers to prevent new connections to dbus-daemon, or disconnect existing clients, by exhausting descriptor limits (CVE-2014-3636).

Malicious local users could create D-Bus connections to dbus-daemon which could not be terminated by killing the participating processes, resulting in a denial-of-service vulnerability (CVE-2014-3637).

dbus-daemon suffered from a denial-of-service vulnerability in the code which tracks which messages expect a reply, allowing local attackers to reduce the performance of dbus-daemon (CVE-2014-3638).

dbus-daemon did not properly reject malicious connections from local users, resulting in a denial-of-service vulnerability (CVE-2014-3639).

The patch issued by the D-Bus maintainers for CVE-2014-3636 was based on incorrect reasoning, and does not fully prevent the attack described as CVE-2014-3636 part A, which is repeated below. Preventing that attack requires raising the system dbus-daemon's RLIMIT_NOFILE (ulimit -n) to a higher value.

By queuing up the maximum allowed number of fds, a malicious sender could reach the system dbus-daemon's RLIMIT_NOFILE (ulimit -n, typically 1024 on Linux). This would act as a denial of service in two ways :

  - new clients would be unable to connect to the     dbus-daemon

  - when receiving a subsequent message from a non-malicious     client that contained a fd, dbus-daemon would receive     the MSG_CTRUNC flag, indicating that the list of fds was     truncated; kernel fd-passing APIs do not provide any way     to recover from that, so dbus-daemon responds to     MSG_CTRUNC by disconnecting the sender, causing denial     of service to that sender.

This update resolves the issue (CVE-2014-7824).

non-systemd processes can make dbus-daemon think systemd failed to activate a system service, resulting in an error reply back to the requester, causing a local denial of service (CVE-2015-0245).

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
80323	Fedora 21 : mingw-dbus-1.8.12-1.fc21 (2014-17595)	Nessus	Fedora Local Security Checks	2015/1/2	2021/1/11	medium
266270	NewStart CGSL MAIN 6.06 : dbus Multiple Vulnerabilities (NS-SA-2025-0231)	Nessus	NewStart CGSL Local Security Checks	2025/9/30	2025/9/30	high
76060	FreeBSD : dbus -- local DoS (52bbc7e8-f13c-11e3-bc09-bcaec565249c)	Nessus	FreeBSD Local Security Checks	2014/6/16	2021/1/6	low
76182	openSUSE Security Update : dbus-1 (openSUSE-SU-2014:0821-1)	Nessus	SuSE Local Security Checks	2014/6/23	2021/1/19	low
76349	Debian DSA-2971-1 : dbus - security update	Nessus	Debian Local Security Checks	2014/7/3	2021/1/11	low
82451	Mandriva Linux Security Advisory : dbus (MDVSA-2015:176)	Nessus	Mandriva Local Security Checks	2015/3/31	2021/1/14	medium

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