U radu programskog paketa bind9 otkiven je i ispravljen sigurnosni propust. Spomenuti nedostatak udaljeni napadač je mogao iskoristiti za rušenje programa.
Paket:
BIND 9.x
Operacijski sustavi:
Ubuntu Linux 10.04, Ubuntu Linux 11.04, Ubuntu Linux 11.10, Ubuntu Linux 12.04
Problem:
pogreška u programskoj komponenti
Iskorištavanje:
udaljeno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-3817
Izvorni ID preporuke:
USN-1518-1
Izvor:
Ubuntu
Problem:
Propust je posljedica nepravile inicijalizacije priručne memorije za neizvršene upite.
Posljedica:
Propust je moguće zlouporabiti za izvođenje DoS napada, tj. rušenje ranjive aplikacije.
Rješenje:
Svim korisnicima se savjetuje korištenje programske nadogradnje koja otklanja opisani propust.
==========================================================================
Ubuntu Security Notice USN-1518-1
July 26, 2012
bind9 vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
- Ubuntu 11.04
- Ubuntu 10.04 LTS
Summary:
Bind could be made to crash if it received specially crafted network
traffic.
Software Description:
- bind9: Internet Domain Name Server
Details:
Einar Lonn discovered that Bind incorrectly initialized the failing-query
cache. A remote attacker could use this flaw to cause Bind to crash,
resulting in a denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
libdns81 1:9.8.1.dfsg.P1-4ubuntu0.2
Ubuntu 11.10:
libdns69 1:9.7.3.dfsg-1ubuntu4.3
Ubuntu 11.04:
libdns69 1:9.7.3.dfsg-1ubuntu2.5
Ubuntu 10.04 LTS:
libdns64 1:9.7.0.dfsg.P1-1ubuntu0.6
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1518-1
CVE-2012-3817
Package Information:
https://launchpad.net/ubuntu/+source/bind9/1:9.8.1.dfsg.P1-4ubuntu0.2
https://launchpad.net/ubuntu/+source/bind9/1:9.7.3.dfsg-1ubuntu4.3
https://launchpad.net/ubuntu/+source/bind9/1:9.7.3.dfsg-1ubuntu2.5
https://launchpad.net/ubuntu/+source/bind9/1:9.7.0.dfsg.P1-1ubuntu0.6
Posljednje sigurnosne preporuke