Ispravljena su dva sigurnosna propusta programskog paketa Nova. Spomenute ranjivosti zlonamjerni korisnik mogao je iskoristiti za DoS napad (eng. Denial of Service) te dobivanje većih privilegija.
Paket:
Operacijski sustavi:
Ubuntu Linux 11.10, Ubuntu Linux 12.04
Kritičnost:
5
Problem:
neodgovarajuće rukovanje datotekama
Iskorištavanje:
udaljeno
Posljedica:
dobivanje većih privilegija, uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-3360, CVE-2012-3361
Izvorni ID preporuke:
USN-1497-1
Izvor:
Ubuntu
Problem:
Nedostaci nastaju kao posljedica nepravilnog rukovanja ubacivanjem datoteka na proizvoljne lokacije datotečnog sustava te korupcije proizvoljnih datoteka.
Posljedica:
Navedene propuste moguće je iskoristiti za dobivanje root ovlasti ili izvođenje napada uskraćivanjem usluge.
Rješenje:
Svim korisnicima se preporučuje nadogradnja sustava.
==========================================================================
Ubuntu Security Notice USN-1497-1
July 03, 2012
nova vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
- Ubuntu 11.10
Summary:
Nova could be made to overwrite or corrupt arbitrary files in the
compute host file system.
Software Description:
- nova: OpenStack Compute cloud infrastructure
Details:
Matthias Weckbecker discovered that, when using the OpenStack API to
setup libvirt-based hypervisors, an authenticated user could inject
files in arbitrary locations on the file system of the host running
Nova. A remote attacker could use this to gain root privileges. This
issue only affects Ubuntu 12.04 LTS. (CVE-2012-3360)
Pádraig Brady discovered that an authenticated user could corrupt
arbitrary files of the host running Nova. A remote attacker could
use this to cause a denial of service or possibly gain privileges.
(CVE-2012-3361)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
python-nova 2012.1+stable~20120612-3ee026e-0ubuntu1.1
Ubuntu 11.10:
python-nova 2011.3-0ubuntu6.9
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1497-1
CVE-2012-3360, CVE-2012-3361
Package Information:
https://launchpad.net/ubuntu/+source/nova/2012.1+stable~20120612-3ee026e-0ubuntu1.1
https://launchpad.net/ubuntu/+source/nova/2011.3-0ubuntu6.9
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