Advisories ยป MGASA-2014-0395

Updated dbus packages fix multiple security vulnerabilities

Publication date: 07 Oct 2014
Type: security
Affected Mageia releases : 3 , 4
CVE: CVE-2014-3635 , CVE-2014-3636 , CVE-2014-3637 , CVE-2014-3638 , CVE-2014-3639


Updated dbus packages fixes the following security issues:

Alban Crequy and Simon McVittie discovered several vulnerabilities in the
D-Bus message daemon:

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).