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Sicherheit: Denial of Service in Xen
Aktuelle Meldungen Distributionen
Name: Denial of Service in Xen
ID: SUSE-SU-2017:2751-1
Distribution: SUSE
Plattformen: SUSE Linux Enterprise Desktop 12-SP3, SUSE Linux Enterprise Server 12-SP3, SUSE Linux Enterprise Software Development Kit 12-SP3
Datum: Di, 17. Oktober 2017, 18:49
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5526
Applikationen: Xen

Originalnachricht

   SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID: SUSE-SU-2017:2751-1
Rating: important
References: #1027519 #1055321 #1059777 #1061076 #1061077
#1061080 #1061081 #1061082 #1061084 #1061086
#1061087
Cross-References: CVE-2017-5526
Affected Products:
SUSE Linux Enterprise Software Development Kit 12-SP3
SUSE Linux Enterprise Server 12-SP3
SUSE Linux Enterprise Desktop 12-SP3
______________________________________________________________________________

An update that solves one vulnerability and has 10 fixes is
now available.

Description:

This update for xen fixes several issues:

These security issues were fixed:

- CVE-2017-5526: The ES1370 audio device emulation support was vulnerable
to a memory leakage issue allowing a privileged user inside the guest to
cause a DoS and/or potentially crash the Qemu process on the host
(bsc#1059777)
- bsc#1061084: Missing cleanup in the page type system allowed a malicious
or buggy PV guest to cause DoS (XSA-242)
- bsc#1061086: A problem in the shadow pagetable code allowed a malicious
or buggy HVM guest to cause DoS or cause hypervisor memory corruption
potentially allowing the guest to escalate its privilege (XSA-243)
- bsc#1061087: Problematic handling of the selector fields in the
Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV
guest to escalate its privileges or cause DoS (XSA-244)
- bsc#1061077 Missing checks in the handling of DMOPs allowed malicious or
buggy stub domain kernels or tool stacks otherwise living outside of
Domain0 to cause a DoS (XSA-238)
- bsc#1061080: Intercepted I/O write operations with less than a full
machine word's worth of data were not properly handled, which allowed
a
malicious unprivileged x86 HVM guest to obtain sensitive information
from the host or
other guests (XSA-239)
- bsc#1061081: In certain configurations of linear page tables a stack
overflow might have occured that allowed a malicious or buggy PV guest
to cause DoS and potentially privilege escalation and information leaks
(XSA-240)
- bsc#1061082: Under certain conditions x86 PV guests could have caused
the hypervisor to miss a necessary TLB flush for a page. This allowed a
malicious x86 PV guest to access all of system memory, allowing for
privilege escalation, DoS, and information leaks (XSA-241)
- bsc#1061076: Multiple issues existed with the setup of PCI MSI
interrupts that allowed a malicious or buggy guest to cause DoS and
potentially privilege escalation and information leaks (XSA-237)
- bsc#1055321: When dealing with the grant map space of add-to-physmap
operations, ARM specific code failed to release a lock. This allowed a
malicious guest administrator to cause DoS (XSA-235)


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 12-SP3:

zypper in -t patch SUSE-SLE-SDK-12-SP3-2017-1702=1

- SUSE Linux Enterprise Server 12-SP3:

zypper in -t patch SUSE-SLE-SERVER-12-SP3-2017-1702=1

- SUSE Linux Enterprise Desktop 12-SP3:

zypper in -t patch SUSE-SLE-DESKTOP-12-SP3-2017-1702=1

To bring your system up-to-date, use "zypper patch".


Package List:

- SUSE Linux Enterprise Software Development Kit 12-SP3 (aarch64 x86_64):

xen-debugsource-4.9.0_14-3.18.1
xen-devel-4.9.0_14-3.18.1

- SUSE Linux Enterprise Server 12-SP3 (x86_64):

xen-4.9.0_14-3.18.1
xen-debugsource-4.9.0_14-3.18.1
xen-doc-html-4.9.0_14-3.18.1
xen-libs-32bit-4.9.0_14-3.18.1
xen-libs-4.9.0_14-3.18.1
xen-libs-debuginfo-32bit-4.9.0_14-3.18.1
xen-libs-debuginfo-4.9.0_14-3.18.1
xen-tools-4.9.0_14-3.18.1
xen-tools-debuginfo-4.9.0_14-3.18.1
xen-tools-domU-4.9.0_14-3.18.1
xen-tools-domU-debuginfo-4.9.0_14-3.18.1

- SUSE Linux Enterprise Desktop 12-SP3 (x86_64):

xen-4.9.0_14-3.18.1
xen-debugsource-4.9.0_14-3.18.1
xen-libs-32bit-4.9.0_14-3.18.1
xen-libs-4.9.0_14-3.18.1
xen-libs-debuginfo-32bit-4.9.0_14-3.18.1
xen-libs-debuginfo-4.9.0_14-3.18.1


References:

https://www.suse.com/security/cve/CVE-2017-5526.html
https://bugzilla.suse.com/1027519
https://bugzilla.suse.com/1055321
https://bugzilla.suse.com/1059777
https://bugzilla.suse.com/1061076
https://bugzilla.suse.com/1061077
https://bugzilla.suse.com/1061080
https://bugzilla.suse.com/1061081
https://bugzilla.suse.com/1061082
https://bugzilla.suse.com/1061084
https://bugzilla.suse.com/1061086
https://bugzilla.suse.com/1061087

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