D-Bus: Denial of Service

1. Gentoo Linux Security Advisory

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

CVE-2008-3834

Updated January 11, 2009

Summary: This is a Gentoo Linux Security Advisory

Security Team
Contact Address

Donate to support our development efforts.