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Oracle Solaris 11: CVE-2019-12749: Vulnerability in dbus

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Oracle Solaris 11: CVE-2019-12749: Vulnerability in dbus

Severity
4
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:N)
Published
06/11/2019
Created
12/19/2019
Added
12/18/2019
Modified
02/17/2022

Description

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.

Solution(s)

  • oracle-solaris-11-4-upgrade-system-library-dbus-1-10-28-11-4-16-0-1-3-0
  • oracle-solaris-11-4-upgrade-system-library-dbus-dbus-x11-1-10-28-11-4-16-0-1-3-0
  • oracle-solaris-11-4-upgrade-system-library-libdbus-1-10-28-11-4-16-0-1-3-0
  • oracle-solaris-11-4-upgrade-system-library-libdbus-glib-0-110-11-4-16-0-1-3-0

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