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D-Bus: Denial of Service

Content:

1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200901-04 / dbus
Release Date January 11, 2009
Latest Revision January 11, 2009: 01
Impact normal
Exploitable local
Package Vulnerable versions Unaffected versions Architecture(s)
sys-apps/dbus < 1.2.3-r1 >= 1.2.3-r1 All supported architectures

Related bugreports: #240308

Synopsis

An error condition can cause D-Bus to crash.

2.  Impact Information

Background

D-Bus is a daemon providing a framework for applications to communicate with one another.

Description

schelte reported that the dbus_signature_validate() function can trigger a failed assertion when processing a message containing a malformed signature.

Impact

A local user could send a specially crafted message to the D-Bus daemon, leading to a Denial of Service.

3.  Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All D-Bus users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.2.3-r1"

4.  References



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Page updated January 11, 2009

Summary: This is a Gentoo Linux Security Advisory

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