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Sicherheit: Mehrere Probleme in Xen
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in Xen
ID: FEDORA-2015-5402
Distribution: Fedora
Plattformen: Fedora 20
Datum: Sa, 11. April 2015, 16:09
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2751
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2752
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2756

Originalnachricht

Name        : xen
Product : Fedora 20
Version : 4.3.4
Release : 2.fc20
URL : http://xen.org/
Summary : Xen is a virtual machine monitor
Description :
This package contains the XenD daemon and xm command line
tools, needed to manage virtual machines running under the
Xen hypervisor

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Update Information:

Long latency MMIO mapping operations are not preemptible [XSA-125,
CVE-2015-2752]
Unmediated PCI command register access in qemu [XSA-126, CVE-2015-2756]
Certain domctl operations may be abused to lock up the host [XSA-127,
CVE-2015-2751]
update to xen-4.3.4
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ChangeLog:

* Tue Mar 31 2015 Michael Young <m.a.young@durham.ac.uk> - 4.3.4-2
- Long latency MMIO mapping operations are not preemptible [XSA-125,
CVE-2015-2752] (#1207741)
- Unmediated PCI command register access in qemu [XSA-126,
CVE-2015-2756] (#1307738)
- Certain domctl operations may be abused to lock up the host [XSA-127,
CVE-2015-2751] (#1207739)
* Mon Mar 23 2015 Michael Young <m.a.young@durham.ac.uk> - 4.3.4-1
- update to xen-4.3.4
remove patches for fixes that are now included
* Thu Mar 12 2015 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-12
- HVM qemu unexpectedly enabling emulated VGA graphics backends [XSA-119,
CVE-2015-2152] (#1201365)
* Wed Mar 11 2015 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-11
- Hypervisor memory corruption due to x86 emulator flaw [XSA-123,
CVE-2015-2151] (#1200398)
* Thu Mar 5 2015 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-10
- Information leak via internal x86 system device emulation [XSA-121,
CVE-2015-2044]
- Information leak through version information hypercall [XSA-122,
CVE-2015-2045]
* Tue Jan 6 2015 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-9
- xen crash due to use after free on hvm guest teardown [XSA-116,
CVE-2015-0361] (#1179221)
* Tue Dec 16 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-8
- fix xendomains issue introduced by xl migrate --debug patch
* Mon Dec 8 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-7
- p2m lock starvation [XSA-114, CVE-2014-9065]
- fix build with --without xsm
* Thu Nov 27 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-6
- Excessive checking in compatibility mode hypercall argument translation
[XSA-111, CVE-2014-8866]
- Insufficient bounding of "REP MOVS" to MMIO emulated inside the
hypervisor
[XSA-112, CVE-2014-8867]
- fix segfaults and failures in xl migrate --debug (#1166461)
* Thu Nov 20 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-5
- Guest effectable page reference leak in MMU_MACHPHYS_UPDATE handling
[XSA-113, CVE-2014-9030] (#1166914)
* Wed Nov 19 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-4
- Insufficient restrictions on certain MMU update hypercalls [XSA-109,
CVE-2014-8594] (#1165205)
- Missing privilege level checks in x86 emulation of far branches [XSA-110,
CVE-2014-8595] (#1165204)
- Add fix for CVE-2014-0150 to qemu-dm, though it probably isn't
exploitable from xen (#1086776)
* Wed Oct 1 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-3
- Improper MSR range used for x2APIC emulation [XSA-108, CVE-2014-7188]
(#1148465)
* Tue Sep 23 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-2
- Race condition in HVMOP_track_dirty_vram [XSA-104, CVE-2014-7154] (#1145736)
- Missing privilege level checks in x86 HLT, LGDT, LIDT, and LMSW emulation
[XSA-105, CVE-2014-7155] (#1145737)
- Missing privilege level checks in x86 emulation of software interrupts
[XSA-106, CVE-2014-7156] (#1145738)
* Tue Sep 2 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.3-1
- update to xen-4.3.3
remove patches for fixes that are now included
* Wed Aug 13 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.2-7
- Long latency virtual-mmu operations are not preemptible
[XSA-97, CVE-2014-5146]
* Fri Jun 20 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.2-6
- Hypervisor heap contents leaked to guest [XSA-100, CVE-2014-4021]
(#1110316) with extra patch to avoid regression
* Sun Jun 15 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.2-5
- Fix %if line typo in the spec file
- Vulnerabilities in HVM MSI injection [XSA-96, CVE-2014-3967,CVE-2014-3968]
(#1104583)
* Sun May 11 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.2-4
- add systemd preset support (#1094938)
* Thu May 1 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.2-3
- HVMOP_set_mem_type allows invalid P2M entries to be created
[XSA-92, CVE-2014-3124] (#1093315)
* Wed Mar 26 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.2-2
- HVMOP_set_mem_access is not preemptible [XSA-89, CVE-2014-2599] (#1080425)
* Tue Feb 18 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.2-1
- update to xen-4.3.2
includes fix for "Excessive time to disable caching with HVM guests with
PCI passthrough" [XSA-60, CVE-2013-2212] (#987914)
- remove patches that are now included
* Wed Feb 12 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.1-10
- use-after-free in xc_cpupool_getinfo() under memory pressure [XSA-88,
CVE-2014-1950] (#1064491)
* Thu Feb 6 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.1-9
- integer overflow in several XSM/Flask hypercalls [XSA-84, CVE-2014-1891,
CVE-2014-1892, CVE-2014-1893, CVE-2014-1894]
Off-by-one error in FLASK_AVC_CACHESTAT hypercall [XSA-85, CVE-2014-1895]
libvchan failure handling malicious ring indexes [XSA-86, CVE-2014-1896]
(#1062335)
* Fri Jan 24 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.1-8
- PHYSDEVOP_{prepare,release}_msix exposed to unprivileged pv guests
[XSA-87, CVE-2014-1666] (#1058398)
* Thu Jan 23 2014 Michael Young <m.a.young@durham.ac.uk> - 4.3.1-7
- Out-of-memory condition yielding memory corruption during IRQ setup
[XSA-83, CVE-2014-1642] (#1057142)
* Wed Dec 11 2013 Michael Young <m.a.young@durham.ac.uk> - 4.3.1-6
- Disaggregated domain management security status update [XSA-77]
- IOMMU TLB flushing may be inadvertently suppressed [XSA-80, CVE-2013-6400]
(#1040024)
* Mon Dec 2 2013 Michael Young <m.a.young@durham.ac.uk> - 4.3.1-5
- HVM guest triggerable AMD CPU erratum may cause host hang
[XSA-82, CVE-2013-6885]
* Tue Nov 26 2013 Michael Young <m.a.young@durham.ac.uk> - 4.3.1-4
- Lock order reversal between page_alloc_lock and mm_rwlock
[XSA-74, CVE-2013-4553] (#1034925)
- Hypercalls exposed to privilege rings 1 and 2 of HVM guests
[XSA-76, CVE-2013-4554] (#1034923)
* Thu Nov 21 2013 Michael Young <m.a.young@durham.ac.uk> - 4.3.1-3
- Insufficient TLB flushing in VT-d (iommu) code
[XSA-78, CVE-2013-6375] (#1033149)
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References:

[ 1 ] Bug #1203737 - CVE-2015-2756 xen: unmediated PCI command register
access in qemu (xsa126)
https://bugzilla.redhat.com/show_bug.cgi?id=1203737
[ 2 ] Bug #1203732 - CVE-2015-2752 xen: long latency MMIO mapping operations
are not preemptible (xsa125)
https://bugzilla.redhat.com/show_bug.cgi?id=1203732
[ 3 ] Bug #1203745 - CVE-2015-2751 xen: certain domctl operations may be
abused to lock up the host
https://bugzilla.redhat.com/show_bug.cgi?id=1203745
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This update can be installed with the "yum" update program. Use
su -c 'yum update xen' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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