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Sicherheit: Zwei Probleme in xen
Aktuelle Meldungen Distributionen
Name: Zwei Probleme in xen
ID: SUSE-SU-2019:0891-1
Distribution: SUSE
Plattformen: SUSE Linux Enterprise Desktop 12-SP4, SUSE Linux Enterprise Server 12-SP4, SUSE Linux Enterprise Software Development Kit 12-SP4
Datum: Fr, 5. April 2019, 23:57
Referenzen: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6778
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9824
Applikationen: Xen

Originalnachricht


SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID: SUSE-SU-2019:0891-1
Rating: important
References: #1026236 #1027519 #1069468 #1119161 #1120067
#1123157 #1126140 #1126141 #1126192 #1126195
#1126196 #1126197 #1126198 #1126201 #1126325
#1127400 #1127620 #1129623
Cross-References: CVE-2019-6778 CVE-2019-9824
Affected Products:
SUSE Linux Enterprise Software Development Kit 12-SP4
SUSE Linux Enterprise Server 12-SP4
SUSE Linux Enterprise Desktop 12-SP4
______________________________________________________________________________

An update that solves two vulnerabilities and has 16 fixes
is now available.

Description:

This update for xen fixes the following issues:

Security issues fixed:

- Fixed an issue which could allow malicious PV guests may cause a host
crash or gain access to data pertaining to other guests.Additionally,
vulnerable configurations are likely to be unstable even in the absence
of an attack (bsc#1126198).
- Fixed multiple access violations introduced by XENMEM_exchange hypercall
which could allow a single PV guest to leak arbitrary amounts of memory,
leading to a denial of service (bsc#1126192).
- Fixed an issue which could allow a malicious unprivileged guest
userspace process to escalate its privilege to that of other userspace
processes in the same guest and potentially thereby to that
of the guest operating system (bsc#1126201).
- Fixed an issue which could allow malicious or buggy x86 PV guest kernels
to mount a Denial of Service attack affecting the whole system
(bsc#1126197).
- Fixed an issue which could allow an untrusted PV domain with access to a
physical device to DMA into its own pagetables leading to privilege
escalation (bsc#1126195).
- Fixed an issue which could allow a malicious or buggy x86 PV guest
kernels can mount a Denial of Service attack affecting the whole system
(bsc#1126196).
- CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp
(bsc#1123157).
- Fixed an issue which could allow malicious 64bit PV guests to cause a
host crash (bsc#1127400).
- Fixed an issue which could allow malicious or buggy guests with passed
through PCI devices to be able to escalate their privileges, crash the
host, or access data belonging to other guests. Additionally memory
leaks were also possible (bsc#1126140).
- Fixed a race condition issue which could allow malicious PV guests to
escalate their privilege to that
of the hypervisor (bsc#1126141).
- CVE-2019-9824: Fixed an information leak in SLiRP networking
implementation which could allow a user/process to read uninitialised
stack memory contents (bsc#1129623).

Other issues addressed:

- Upstream bug fixes (bsc#1027519)
- Packages should no longer use /var/adm/fillup-templates (bsc#1069468).
- Added Xen cmdline option "suse_vtsc_tolerance" to avoid TSC
emulation
for HVM domUs (bsc#1026236).
- Fixed an issue where setup of grant_tables and other variables may fail
(bsc#1126325).
- Fixed a building issue (bsc#1119161).
- Added a requirement for xen, xl.cfg firmware="pvgrub32|pvgrub64
(bsc#1127620).
- Fixed a segmetation fault in Libvirt when crash triggered on top of HVM
guest (bsc#1120067).


Patch Instructions:

To install this SUSE Security Update use the SUSE recommended installation
methods
like YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

- SUSE Linux Enterprise Software Development Kit 12-SP4:

zypper in -t patch SUSE-SLE-SDK-12-SP4-2019-891=1

- SUSE Linux Enterprise Server 12-SP4:

zypper in -t patch SUSE-SLE-SERVER-12-SP4-2019-891=1

- SUSE Linux Enterprise Desktop 12-SP4:

zypper in -t patch SUSE-SLE-DESKTOP-12-SP4-2019-891=1



Package List:

- SUSE Linux Enterprise Software Development Kit 12-SP4 (aarch64 x86_64):

xen-debugsource-4.11.1_04-2.6.1
xen-devel-4.11.1_04-2.6.1

- SUSE Linux Enterprise Server 12-SP4 (x86_64):

xen-4.11.1_04-2.6.1
xen-debugsource-4.11.1_04-2.6.1
xen-doc-html-4.11.1_04-2.6.1
xen-libs-32bit-4.11.1_04-2.6.1
xen-libs-4.11.1_04-2.6.1
xen-libs-debuginfo-32bit-4.11.1_04-2.6.1
xen-libs-debuginfo-4.11.1_04-2.6.1
xen-tools-4.11.1_04-2.6.1
xen-tools-debuginfo-4.11.1_04-2.6.1
xen-tools-domU-4.11.1_04-2.6.1
xen-tools-domU-debuginfo-4.11.1_04-2.6.1

- SUSE Linux Enterprise Desktop 12-SP4 (x86_64):

xen-4.11.1_04-2.6.1
xen-debugsource-4.11.1_04-2.6.1
xen-libs-32bit-4.11.1_04-2.6.1
xen-libs-4.11.1_04-2.6.1
xen-libs-debuginfo-32bit-4.11.1_04-2.6.1
xen-libs-debuginfo-4.11.1_04-2.6.1


References:

https://www.suse.com/security/cve/CVE-2019-6778.html
https://www.suse.com/security/cve/CVE-2019-9824.html
https://bugzilla.suse.com/1026236
https://bugzilla.suse.com/1027519
https://bugzilla.suse.com/1069468
https://bugzilla.suse.com/1119161
https://bugzilla.suse.com/1120067
https://bugzilla.suse.com/1123157
https://bugzilla.suse.com/1126140
https://bugzilla.suse.com/1126141
https://bugzilla.suse.com/1126192
https://bugzilla.suse.com/1126195
https://bugzilla.suse.com/1126196
https://bugzilla.suse.com/1126197
https://bugzilla.suse.com/1126198
https://bugzilla.suse.com/1126201
https://bugzilla.suse.com/1126325
https://bugzilla.suse.com/1127400
https://bugzilla.suse.com/1127620
https://bugzilla.suse.com/1129623

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