U radu jezgre inux-lts-backport-oneiric otkrivene su i uklonjene dvije ranjivosti koje omogućuju izvođenje DoS napada te stjecanje povećanih privilegija.
Paket:
linux-lts-backport-oneiric 3.x
Operacijski sustavi:
Ubuntu Linux 10.04
Kritičnost:
5.3
Problem:
korupcija memorije, pogreška u programskoj komponenti
Iskorištavanje:
lokalno/udaljeno
Posljedica:
dobivanje većih privilegija, uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-1601, CVE-2012-2123
Izvorni ID preporuke:
USN-1455-1
Izvor:
Ubuntu
Problem:
Ranjivost je pronađena unutar KVM (Kernel Virtual Machine) komponente te fscaps komponente pri alokaciji memorije.
Posljedica:
Zlonamjerni korisnici mogli bi iskoristiti ranjivosti za povećanje ovlasti i izvođenje DoS napada.
Rješenje:
Svim se korisnicima savjetuje instalacija nadogradnji.
==========================================================================
Ubuntu Security Notice USN-1455-1
May 30, 2012
linux-lts-backport-oneiric vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- linux-lts-backport-oneiric: Linux kernel backport from Oneiric
Details:
A flaw was found in the Linux kernel's KVM (Kernel Virtual Machine) virtual
cpu setup. An unprivileged local user could exploit this flaw to crash the
system leading to a denial of service. (CVE-2012-1601)
Steve Grubb reported a flaw with Linux fscaps (file system base
capabilities) when used to increase the permissions of a process. For
application on which fscaps are in use a local attacker can disable address
space randomization to make attacking the process with raised privileges
easier. (CVE-2012-2123)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 10.04 LTS:
linux-image-3.0.0-20-generic 3.0.0-20.34~lucid1
linux-image-3.0.0-20-generic-pae 3.0.0-20.34~lucid1
linux-image-3.0.0-20-server 3.0.0-20.34~lucid1
linux-image-3.0.0-20-virtual 3.0.0-20.34~lucid1
After a standard system update you need to reboot your computer to make
all the necessary changes.
ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.
References:
http://www.ubuntu.com/usn/usn-1455-1
CVE-2012-1601, CVE-2012-2123
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-20.34~lucid1
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