U radu jezgre operacijskog sustava Ubuntu 10.10 uočena su tri nova sigurnosna propusta. Napadač spomenute nedostatke može iskoristiti za DoS (eng. Denial of Service) napad.
Paket:
Linux kernel 3.x
Operacijski sustavi:
Ubuntu Linux 10.10
Kritičnost:
9.3
Problem:
neodgovarajuća provjera ulaznih podataka, pogreška u programskoj komponenti
Iskorištavanje:
lokalno/udaljeno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2011-1927, CVE-2011-0716, CVE-2011-3619
Izvorni ID preporuke:
USN-1379-1
Izvor:
Ubuntu
Problem:
Problemi sigurnosti se javljaju zbog pogrešnog rukovanja "IPv4 icmp" i "IGMP" (Internet Group Management Protocol) paketima, te zbog pogreške u "AppArmor" sigurnosnom sučelju.
Posljedica:
Napadač navedene propuste može iskoristiti za rušenje ranjivog sustava (DoS napad).
Rješenje:
Rješenje problema sigurnosti je nadogradnja na novije inačice.
==========================================================================
Ubuntu Security Notice USN-1379-1
February 28, 2012
linux vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.10
Summary:
Several security issues were fixed in the kernel.
Software Description:
- linux: Linux kernel
Details:
Aristide Fattori and Roberto Paleari reported a flaw in the Linux kernel's
handling of IPv4 icmp packets. A remote user could exploit this to cause a
denial of service. (CVE-2011-1927)
A flaw was found in the Linux Ethernet bridge's handling of IGMP (Internet
Group Management Protocol) packets. An unprivileged local user could
exploit this flaw to crash the system. (CVE-2011-0716)
A flaw was discovered in the Linux kernel's AppArmor security interface
when invalid information was written to it. An unprivileged local user
could use this to cause a denial of service on the system. (CVE-2011-3619)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 10.10:
linux-image-2.6.35-32-generic 2.6.35-32.66
linux-image-2.6.35-32-generic-pae 2.6.35-32.66
linux-image-2.6.35-32-omap 2.6.35-32.66
linux-image-2.6.35-32-powerpc 2.6.35-32.66
linux-image-2.6.35-32-powerpc-smp 2.6.35-32.66
linux-image-2.6.35-32-powerpc64-smp 2.6.35-32.66
linux-image-2.6.35-32-server 2.6.35-32.66
linux-image-2.6.35-32-versatile 2.6.35-32.66
linux-image-2.6.35-32-virtual 2.6.35-32.66
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1379-1
CVE-2011-0716, CVE-2011-1927, CVE-2011-3619
Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.35-32.66
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