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

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

Affected Packages

sys-apps/dbus on all architectures
Affected versions < 1.6.12
Unaffected versions >= 1.6.12

Background

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

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

Release Date
August 22, 2013

Latest Revision
August 22, 2013: 1

Severity
normal

Exploitable
local

Bugzilla entries