drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Ausführen beliebiger Kommandos in Xen
Name: |
Ausführen beliebiger Kommandos in Xen |
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ID: |
RHSA-2015:1002-01 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Enterprise Linux |
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Datum: |
Mi, 13. Mai 2015, 18:39 |
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Referenzen: |
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3456 |
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Applikationen: |
Xen |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
===================================================================== Red Hat Security Advisory
Synopsis: Important: xen security update Advisory ID: RHSA-2015:1002-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1002.html Issue date: 2015-05-13 CVE Names: CVE-2015-3456 =====================================================================
1. Summary:
Updated xen packages that fix one security issue are now available for Red Hat Enterprise Linux 5.
Red Hat Product Security has rated this update as having Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.
2. Relevant releases/architectures:
RHEL Desktop Multi OS (v. 5 client) - i386, x86_64 RHEL Virtualization (v. 5 server) - i386, ia64, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64
3. Description:
The xen packages contain administration tools and the xend service for managing the kernel-xen kernel for virtualization on Red Hat Enterprise Linux.
An out-of-bounds memory access flaw was found in the way QEMU's virtual Floppy Disk Controller (FDC) handled FIFO buffer access while processing certain FDC commands. A privileged guest user could use this flaw to crash the guest or, potentially, execute arbitrary code on the host with the privileges of the host's QEMU process corresponding to the guest. (CVE-2015-3456)
Red Hat would like to thank Jason Geffner of CrowdStrike for reporting this issue.
All xen users are advised to upgrade to these updated packages, which contain a backported patch to correct this issue. After installing the updated packages, all running fully-virtualized guests must be restarted for this update to take effect.
4. Solution:
Before applying this update, make sure all previously released errata relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
1218611 - CVE-2015-3456 qemu: fdc: out-of-bounds fifo buffer memory access
6. Package List:
Red Hat Enterprise Linux Desktop (v. 5 client):
Source: xen-3.0.3-146.el5_11.src.rpm
i386: xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-libs-3.0.3-146.el5_11.i386.rpm
x86_64: xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.x86_64.rpm xen-libs-3.0.3-146.el5_11.i386.rpm xen-libs-3.0.3-146.el5_11.x86_64.rpm
RHEL Desktop Multi OS (v. 5 client):
Source: xen-3.0.3-146.el5_11.src.rpm
i386: xen-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-devel-3.0.3-146.el5_11.i386.rpm
x86_64: xen-3.0.3-146.el5_11.x86_64.rpm xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.x86_64.rpm xen-devel-3.0.3-146.el5_11.i386.rpm xen-devel-3.0.3-146.el5_11.x86_64.rpm
Red Hat Enterprise Linux (v. 5 server):
Source: xen-3.0.3-146.el5_11.src.rpm
i386: xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-libs-3.0.3-146.el5_11.i386.rpm
ia64: xen-debuginfo-3.0.3-146.el5_11.ia64.rpm xen-libs-3.0.3-146.el5_11.ia64.rpm
x86_64: xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.x86_64.rpm xen-libs-3.0.3-146.el5_11.i386.rpm xen-libs-3.0.3-146.el5_11.x86_64.rpm
RHEL Virtualization (v. 5 server):
Source: xen-3.0.3-146.el5_11.src.rpm
i386: xen-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-devel-3.0.3-146.el5_11.i386.rpm
ia64: xen-3.0.3-146.el5_11.ia64.rpm xen-debuginfo-3.0.3-146.el5_11.ia64.rpm xen-devel-3.0.3-146.el5_11.ia64.rpm
x86_64: xen-3.0.3-146.el5_11.x86_64.rpm xen-debuginfo-3.0.3-146.el5_11.i386.rpm xen-debuginfo-3.0.3-146.el5_11.x86_64.rpm xen-devel-3.0.3-146.el5_11.i386.rpm xen-devel-3.0.3-146.el5_11.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2015-3456 https://access.redhat.com/security/updates/classification/#important
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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