Otkriveni su i ispravljeni problemi u radu programskog paketa XEN koji su omogućavali zlonamjernom korisniku gašenje ranjive aplikacije.
Paket:
xen 4.x
Operacijski sustavi:
SUSE 11, SUSE Linux Enterprise Desktop 11, SUSE Linux Enterprise Server (SLES) 11
Kritičnost:
4.4
Problem:
korupcija memorije, pogreška u programskoj komponenti
Iskorištavanje:
lokalno
Posljedica:
uskraćivanje usluga (DoS)
Rješenje:
programska zakrpa proizvođača
CVE:
CVE-2012-2625, CVE-2012-3432, CVE-2012-3433
Izvorni ID preporuke:
SUSE-SU-2012:1044-1
Izvor:
SUSE
Problem:
Nedostaci se javljaju zbog neadekvatne provjere veličine bzip2 ili lzma kompresirane kernel slike, nepravilne emulacije MMIO operacija te nedopuštene manipulacije fizičkom memorijom.
Posljedica:
Napadač je mogao iskoristiti ranjivosti kako bi izveo DoS napad.
Announcement ID: SUSE-SU-2012:1044-1
Rating: important
References: #744771 #746702 #762484 #762963 #773393 #773401
Cross-References: CVE-2012-2625 CVE-2012-3432 CVE-2012-3433
Affected Products:
SUSE Linux Enterprise Software Development Kit 11 SP1
SUSE Linux Enterprise Server 11 SP1 for VMware
SUSE Linux Enterprise Server 11 SP1
SUSE Linux Enterprise Desktop 11 SP1
______________________________________________________________________________
An update that solves three vulnerabilities and has three
fixes is now available. It includes one version update.
Description:
Xen was updated to fix several security issues:
*
CVE-2012-3433: A xen HVM guest destroy p2m teardown
host DoS vulnerability was fixed, where malicious guest
could lock/crash the host.
*
CVE-2012-3432: A xen HVM guest user mode MMIO
emulation DoS was fixed.
*
CVE-2012-2625: The xen pv bootloader doesn't check
the size of the bzip2 or lzma compressed kernel, leading to
denial of service (crash).
Also the following bug in XEN was fixed:
* bnc#746702 - Xen HVM DomU crash during Windows Server
2008 R2 install, when maxmem > memory
This update also included bugfixes for:
* vm-install: - bnc#762963 - ReaR: Unable to recover a
paravirtualized XEN guest
Security Issue references:
* CVE-2012-3432
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3432
>
* CVE-2012-3433
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-3433
>
* CVE-2012-2625
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-2625
>
Patch Instructions:
To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:
- SUSE Linux Enterprise Software Development Kit 11 SP1:
zypper in -t patch sdksp1-xen-201208-6653
- SUSE Linux Enterprise Server 11 SP1 for VMware:
zypper in -t patch slessp1-xen-201208-6653
- SUSE Linux Enterprise Server 11 SP1:
zypper in -t patch slessp1-xen-201208-6653
- SUSE Linux Enterprise Desktop 11 SP1:
zypper in -t patch sledsp1-xen-201208-6653
To bring your system up-to-date, use "zypper patch".
Package List:
- SUSE Linux Enterprise Software Development Kit 11 SP1 (i586 x86_64):
xen-devel-4.0.3_21548_08-0.7.1
- SUSE Linux Enterprise Server 11 SP1 for VMware (i586 x86_64):
xen-kmp-trace-4.0.3_21548_08_2.6.32.59_0.7-0.7.1
- SUSE Linux Enterprise Server 11 SP1 (i586 x86_64) [New Version: 0.4.34]:
vm-install-0.4.34-0.3.1
xen-4.0.3_21548_08-0.7.1
xen-doc-html-4.0.3_21548_08-0.7.1
xen-doc-pdf-4.0.3_21548_08-0.7.1
xen-kmp-default-4.0.3_21548_08_2.6.32.59_0.7-0.7.1
xen-kmp-trace-4.0.3_21548_08_2.6.32.59_0.7-0.7.1
xen-libs-4.0.3_21548_08-0.7.1
xen-tools-4.0.3_21548_08-0.7.1
xen-tools-domU-4.0.3_21548_08-0.7.1
- SUSE Linux Enterprise Server 11 SP1 (i586):
xen-kmp-pae-4.0.3_21548_08_2.6.32.59_0.7-0.7.1
- SUSE Linux Enterprise Desktop 11 SP1 (i586 x86_64) [New Version: 0.4.34]:
vm-install-0.4.34-0.3.1
xen-4.0.3_21548_08-0.7.1
xen-kmp-default-4.0.3_21548_08_2.6.32.59_0.7-0.7.1
xen-libs-4.0.3_21548_08-0.7.1
xen-tools-4.0.3_21548_08-0.7.1
xen-tools-domU-4.0.3_21548_08-0.7.1
- SUSE Linux Enterprise Desktop 11 SP1 (i586):
xen-kmp-pae-4.0.3_21548_08_2.6.32.59_0.7-0.7.1
References:
http://support.novell.com/security/cve/CVE-2012-2625.html
http://support.novell.com/security/cve/CVE-2012-3432.html
http://support.novell.com/security/cve/CVE-2012-3433.html
https://bugzilla.novell.com/744771
https://bugzilla.novell.com/746702
https://bugzilla.novell.com/762484
https://bugzilla.novell.com/762963
https://bugzilla.novell.com/773393
https://bugzilla.novell.com/773401
http://download.novell.com/patch/finder/?keywords=872c7f98262a167c6598ea04dc6e81c7
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