U radu jezgre operacijskog sustava Ubuntu 10.10 uočeno je nekoliko novih sigurnosnih propusta. Lokalni ih napadači mogu iskoristiti za izvođenje DoS napada i pokretanje proizvoljnog programskog koda.
Paket:
Linux kernel 2.6.x
Operacijski sustavi:
Ubuntu Linux 10.10
Kritičnost:
5.4
Problem:
cjelobrojno prepisivanje, pogreška u programskoj komponenti
Propusti su uzrokovani pogreškama u FUSE modulu jezgre, komponenti Programmable Interval Timer i XFS datotečnom sustavu, te prepisivanjem cjelobrojne varijable.
Posljedica:
Napadaču propusti omogućuju pokretanje zlonamjernog programskog koda i rušenje ranjivog sustava.
==========================================================================
Ubuntu Security Notice USN-1361-1
February 13, 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:
Han-Wen Nienhuys reported a flaw in the FUSE kernel module. A local user
who can mount a FUSE file system could cause a denial of service.
(CVE-2011-3353)
A flaw was found in KVM's Programmable Interval Timer (PIT). When a virtual
interrupt control is not available a local user could use this to cause a
denial of service by starting a timer. (CVE-2011-4622)
A flaw was discovered in the XFS filesystem. If a local user mounts a
specially crafted XFS image it could potential execute arbitrary code on
the system. (CVE-2012-0038)
Chen Haogang discovered an integer overflow that could result in memory
corruption. A local unprivileged user could use this to crash the system.
(CVE-2012-0044)
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 2.6.35-32.65
linux-image-2.6.35-32-generic-pae 2.6.35-32.65
linux-image-2.6.35-32-omap 2.6.35-32.65
linux-image-2.6.35-32-powerpc 2.6.35-32.65
linux-image-2.6.35-32-powerpc-smp 2.6.35-32.65
linux-image-2.6.35-32-powerpc64-smp 2.6.35-32.65
linux-image-2.6.35-32-server 2.6.35-32.65
linux-image-2.6.35-32-versatile 2.6.35-32.65
linux-image-2.6.35-32-virtual 2.6.35-32.65
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1361-1
CVE-2011-3353, CVE-2011-4622, CVE-2012-0038, CVE-2012-0044
Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.35-32.65
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