U radu jezgre operacijskog sustava Ubuntu 8.04 LTS uočeno je nekoliko sigurnosnih propusta. Lokalni ih napadači mogu iskoristiti za izvođenje napada uskraćivanjem usluge i pregled osjetljivih podataka.
Bitniji su propusti posljedica pogrešaka u HFS datotečnom sustavu, obradi TPM podataka te nepravilnosti u b43 pokretačkom programu (eng. driver). Za više informacija savjetuje se čitanje izvornog upozorenja.
Posljedica:
Napadaču omogućuju izvođenje DoS (eng. Denial of Service) napada i otkrivanje osjetljivih informacija.
Rješenje:
Korisnicima se preporuča primjena odgovarajuće nadogradnje.
==========================================================================
Ubuntu Security Notice USN-1323-1
January 11, 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:
Peter Huewe discovered an information leak in the handling of reading
security-related TPM data. A local, unprivileged user could read the
results of a previous TPM command. (CVE-2011-1162)
Clement Lecigne discovered a bug in the HFS filesystem. A local attacker
could exploit this to cause a kernel oops. (CVE-2011-2203)
A flaw was found in the b43 driver in the Linux kernel. An attacker could
use this flaw to cause a denial of service if the system has an active
wireless interface using the b43 driver. (CVE-2011-3359)
A flaw was found in how the Linux kernel handles user-defined key types. An
unprivileged local user could exploit this to crash the system.
(CVE-2011-4110)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 8.04 LTS:
linux-image-2.6.24-30-386 2.6.24-30.98
linux-image-2.6.24-30-generic 2.6.24-30.98
linux-image-2.6.24-30-hppa32 2.6.24-30.98
linux-image-2.6.24-30-hppa64 2.6.24-30.98
linux-image-2.6.24-30-itanium 2.6.24-30.98
linux-image-2.6.24-30-lpia 2.6.24-30.98
linux-image-2.6.24-30-lpiacompat 2.6.24-30.98
linux-image-2.6.24-30-mckinley 2.6.24-30.98
linux-image-2.6.24-30-openvz 2.6.24-30.98
linux-image-2.6.24-30-powerpc 2.6.24-30.98
linux-image-2.6.24-30-powerpc-smp 2.6.24-30.98
linux-image-2.6.24-30-powerpc64-smp 2.6.24-30.98
linux-image-2.6.24-30-rt 2.6.24-30.98
linux-image-2.6.24-30-server 2.6.24-30.98
linux-image-2.6.24-30-sparc64 2.6.24-30.98
linux-image-2.6.24-30-sparc64-smp 2.6.24-30.98
linux-image-2.6.24-30-virtual 2.6.24-30.98
linux-image-2.6.24-30-xen 2.6.24-30.98
After a standard system update you need to reboot your computer to make
all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-1323-1
CVE-2011-1162, CVE-2011-2203, CVE-2011-3359, CVE-2011-4110
Package Information:
https://launchpad.net/ubuntu/+source/linux/2.6.24-30.98
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