U radu dviju inačica operacijskog sustava Linux uočena je sigurnosna ranjivost. Potencijalni napadači je mogu iskoristiti za napad uskraćivanjem usluga.
Paket:
Linux kernel 3.x, linux-lts-backport-oneiric 3.x
Operacijski sustavi:
Ubuntu Linux 10.04, Ubuntu Linux 11.10, Ubuntu Linux 12.04
Kritičnost:
4
Problem:
neodgovarajuće rukovanje datotekama, pogreška u programskoj komponenti
Iskorištavanje:
udaljeno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-2375
Izvorni ID preporuke:
USN-1489-1
Izvor:
Ubuntu
Problem:
Uočeno je da do pogreške dolazi u radu funkcije __nfs4_get_acl_uncached (s/nfs/nfs4proc.c) u NFSv4 implementaciji.
Posljedica:
Navedeni propust napadači mogu iskoristiti za napad uskraćivanjem usluga (eng. Denial of Service, DoS).
Rješenje:
Kao rješenje problema sigurnosti savjetuje se primjena dostupnih programskih rješenja.
==========================================================================
Ubuntu Security Notice USN-1489-1
June 29, 2012
linux-lts-backport-oneiric vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 10.04 LTS
Summary:
The system could be made to crash if it received specially crafted network
traffic.
Software Description:
- linux-lts-backport-oneiric: Linux kernel backport from Oneiric
Details:
A flaw was discovered in the Linux kernel's NFSv4 (Network file system)
handling of ACLs (access control lists). A remote NFS server (attacker)
could cause a denial of service (OOPS).
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 10.04 LTS:
linux-image-3.0.0-22-generic 3.0.0-22.36~lucid1
linux-image-3.0.0-22-generic-pae 3.0.0-22.36~lucid1
linux-image-3.0.0-22-server 3.0.0-22.36~lucid1
linux-image-3.0.0-22-virtual 3.0.0-22.36~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-1489-1
CVE-2012-2375
Package Information:
https://launchpad.net/ubuntu/+source/linux-lts-backport-oneiric/3.0.0-22.36~lucid1
==========================================================================
Ubuntu Security Notice USN-1486-1
June 29, 2012
linux vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 12.04 LTS
Summary:
The system could be made to crash if it received specially crafted network
traffic.
Software Description:
- linux: Linux kernel
Details:
A flaw was discovered in the Linux kernel's NFSv4 (Network file system)
handling of ACLs (access control lists). A remote NFS server (attacker)
could cause a denial of service (OOPS).
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 12.04 LTS:
linux-image-3.2.0-26-generic 3.2.0-26.41
linux-image-3.2.0-26-generic-pae 3.2.0-26.41
linux-image-3.2.0-26-highbank 3.2.0-26.41
linux-image-3.2.0-26-omap 3.2.0-26.41
linux-image-3.2.0-26-powerpc-smp 3.2.0-26.41
linux-image-3.2.0-26-powerpc64-smp 3.2.0-26.41
linux-image-3.2.0-26-virtual 3.2.0-26.41
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-1486-1
CVE-2012-2375
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.2.0-26.41
==========================================================================
Ubuntu Security Notice USN-1487-1
June 29, 2012
linux vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 11.10
Summary:
The system could be made to crash if it received specially crafted network
traffic.
Software Description:
- linux: Linux kernel
Details:
A flaw was discovered in the Linux kernel's NFSv4 (Network file system)
handling of ACLs (access control lists). A remote NFS server (attacker)
could cause a denial of service (OOPS).
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 11.10:
linux-image-3.0.0-22-generic 3.0.0-22.36
linux-image-3.0.0-22-generic-pae 3.0.0-22.36
linux-image-3.0.0-22-omap 3.0.0-22.36
linux-image-3.0.0-22-powerpc 3.0.0-22.36
linux-image-3.0.0-22-powerpc-smp 3.0.0-22.36
linux-image-3.0.0-22-powerpc64-smp 3.0.0-22.36
linux-image-3.0.0-22-server 3.0.0-22.36
linux-image-3.0.0-22-virtual 3.0.0-22.36
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-1487-1
CVE-2012-2375
Package Information:
https://launchpad.net/ubuntu/+source/linux/3.0.0-22.36
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