GLSA 201308-02: D-Bus: Denial of Service

http://security.gentoo.org/

Severity:	normal
Title:	D-Bus: Denial of Service
Date:	08/22/2013
Bugs:	#473190
ID:	201308-02

Synopsis

A vulnerability has been found in D-Bus which allows a local user to cause a Denial of Service.

Background

D-Bus is a message bus system which processes can use to talk to each other.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
sys-apps/dbus	< 1.6.12	>= 1.6.12	All supported architectures

Description

D-Bus’ _dbus_printf_string_upper_bound() function crashes if it returns exactly 1024 bytes.

Impact

A local attacker could provide specially-crafted input to an application using D-Bus which would cause _dbus_printf_string_upper_bound() to return 1024 bytes and crash, causing a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

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

      # emerge --sync
      # emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.6.12"

References

CVE-2013-2168

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-201308-02.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.