U programskom paketu dbus uočena je sigurnosna ranjivost koju lokalni zlonamjerni korisnici mogu iskoristiti za DoS napad i otkrivanje osjetljivih podataka.
Paket:
dbus 1.x
Operacijski sustavi:
Ubuntu Linux 8.04, Ubuntu Linux 10.04, Ubuntu Linux 10.10, Ubuntu Linux 11.04
Ranjivost je otkrivena u funkciji "_dbus_header_byteswap function" u datoteci "dbus-marshal-header.c" gdje dolazi do nepravilnog rukovanja određenim porukama.
Posljedica:
Pomoću posebno oblikovane poruke lokalni napadač može izvesti DoS napad i otkriti osjetljive informacije.
==========================================================================
Ubuntu Security Notice USN-1176-1
July 26, 2011
dbus vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.04
- Ubuntu 10.10
- Ubuntu 10.04 LTS
- Ubuntu 8.04 LTS
Summary:
DBus could be made to crash if it processed a specially crafted message.
Software Description:
- dbus: simple interprocess messaging system
Details:
It was discovered that DBus did not properly validate the byte order of
messages under certain circumstances. An attacker could exploit this to
cause a denial of service via application crash or potentially obtain
access to sensitive information.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.04:
dbus 1.4.6-1ubuntu6.1
Ubuntu 10.10:
dbus 1.4.0-0ubuntu1.3
Ubuntu 10.04 LTS:
dbus 1.2.16-2ubuntu4.3
Ubuntu 8.04 LTS:
dbus 1.1.20-1ubuntu3.5
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1176-1
CVE-2011-2200
Package Information:
https://launchpad.net/ubuntu/+source/dbus/1.4.6-1ubuntu6.1
https://launchpad.net/ubuntu/+source/dbus/1.4.0-0ubuntu1.3
https://launchpad.net/ubuntu/+source/dbus/1.2.16-2ubuntu4.3
https://launchpad.net/ubuntu/+source/dbus/1.1.20-1ubuntu3.5
Posljednje sigurnosne preporuke