Nekoliko sigurnosnih propusta otkriveno je u radu jezgre operacijskog sustava Linux Ubuntu 8.04 LTS. Lokalnim napadačima omogućuju izvođenje napada uskraćivanjem usluge i stjecanje većih ovlasti.
Paket:
Linux kernel 2.6.x
Operacijski sustavi:
Ubuntu Linux 8.04
Kritičnost:
4.6
Problem:
pogreška u programskoj komponenti
Iskorištavanje:
lokalno
Posljedica:
dobivanje većih privilegija, uskraćivanje usluga (DoS)
Propusti su posljedica neodgovarajućeg rukovanja LDM particijama, pogreškama u NFSv4 datotečnom sustavu, OSS (Open Sound System) MIDI sučelju, itd. Za više informacija o svim propustima preporuča se čitanje izvorne preporuke.
Posljedica:
Napadači ih mogu iskoristiti za izvođenje izvođenje DoS (eng. Denial of Service) napada i povećanje ovlasti na ranjivom sustavu.
Rješenje:
Svim se korisnicima savjetuje instalacija odgovarajućih zakrpa.
==========================================================================
Ubuntu Security Notice USN-1390-1
March 06, 2012
linux vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 8.04 LTS
Summary:
Several security issues were fixed in the kernel.
Software Description:
- linux: Linux kernel
Details:
Dan Rosenberg reported errors in the OSS (Open Sound System) MIDI
interface. A local attacker on non-x86 systems might be able to cause a
denial of service. (CVE-2011-1476)
Dan Rosenberg reported errors in the kernel's OSS (Open Sound System)
driver for Yamaha FM synthesizer chips. A local user can exploit this to
cause memory corruption, causing a denial of service or privilege
escalation. (CVE-2011-1477)
Ben Hutchings reported a flaw in the kernel's handling of corrupt LDM
partitions. A local user could exploit this to cause a denial of service or
escalate privileges. (CVE-2011-2182)
A flaw was discovered in the Linux kernel's NFSv4 (Network File System
version 4) file system. A local, unprivileged user could use this flaw to
cause a denial of service by creating a file in a NFSv4 filesystem.
(CVE-2011-4324)
A flaw was found in how the linux kernel handles user-space held futexs. An
unprivileged user could exploit this flaw to cause a denial of service or
possibly elevate privileges. (CVE-2012-0028)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 8.04 LTS:
linux-image-2.6.24-31-386 2.6.24-31.99
linux-image-2.6.24-31-generic 2.6.24-31.99
linux-image-2.6.24-31-hppa32 2.6.24-31.99
linux-image-2.6.24-31-hppa64 2.6.24-31.99
linux-image-2.6.24-31-itanium 2.6.24-31.99
linux-image-2.6.24-31-lpia 2.6.24-31.99
linux-image-2.6.24-31-lpiacompat 2.6.24-31.99
linux-image-2.6.24-31-mckinley 2.6.24-31.99
linux-image-2.6.24-31-openvz 2.6.24-31.99
linux-image-2.6.24-31-powerpc 2.6.24-31.99
linux-image-2.6.24-31-powerpc-smp 2.6.24-31.99
linux-image-2.6.24-31-powerpc64-smp 2.6.24-31.99
linux-image-2.6.24-31-rt 2.6.24-31.99
linux-image-2.6.24-31-server 2.6.24-31.99
linux-image-2.6.24-31-sparc64 2.6.24-31.99
linux-image-2.6.24-31-sparc64-smp 2.6.24-31.99
linux-image-2.6.24-31-virtual 2.6.24-31.99
linux-image-2.6.24-31-xen 2.6.24-31.99
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-1390-1
CVE-2011-1476, CVE-2011-1477, CVE-2011-2182, CVE-2011-4324,
CVE-2012-0028
Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.24-31.99
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