SecurityTracker.com
    Home    |    View Topics    |    Search    |    Contact Us    |   

SecurityTracker
Archives


 


Category:   Application (Generic)  >   QEMU Vendors:   QEMU.org
(Red Hat Issues Fix) QEMU Buffer Overflow in ne2000_receive() Lets Local Guest Users Deny Service or Execute Arbitrary Code on the Host System
SecurityTracker Alert ID:  1033958
SecurityTracker URL:  http://securitytracker.com/id/1033958
CVE Reference:   CVE-2015-5279   (Links to External Site)
Date:  Oct 24 2015
Impact:   Denial of service via network, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in QEMU. A local user on the guest system can cause denial of service conditions on the host system or potentially execute arbitrary code on the host system.

A local privileged user on the guest system can trigger a buffer overflow in the ne2000_receive() function and cause the target QEMU instance to crash or potentially execute arbitrary code on the host system.

Systems built with the NE2000 NIC emulation support are affected.

Impact:   A local user on the guest system can cause denial of service conditions on the host system or potentially execute arbitrary code on the host system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2015-1924.html

Vendor URL:  rhn.redhat.com/errata/RHSA-2015-1924.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  6

Message History:   This archive entry is a follow-up to the message listed below.
Sep 16 2015 QEMU Buffer Overflow in ne2000_receive() Lets Local Guest Users Deny Service or Execute Arbitrary Code on the Host System



 Source Message Contents

Subject:  [RHSA-2015:1924-01] Important: qemu-kvm security update

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: qemu-kvm security update
Advisory ID:       RHSA-2015:1924-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-1924.html
Issue date:        2015-10-22
CVE Names:         CVE-2015-5279 
=====================================================================

1. Summary:

Updated qemu-kvm packages that fix one security issue are now available for
Red Hat Enterprise Linux 6.

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:

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64
Red Hat Enterprise Linux HPC Node (v. 6) - x86_64
Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, x86_64
Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

KVM (Kernel-based Virtual Machine) is a full virtualization solution for
Linux on AMD64 and Intel 64 systems. The qemu-kvm package provides the
user-space component for running virtual machines using KVM.

A heap buffer overflow flaw was found in the way QEMU's NE2000 NIC
emulation implementation handled certain packets received over the network.
A privileged user inside a guest could use this flaw to crash the QEMU
instance (denial of service) or potentially execute arbitrary code on
the host. (CVE-2015-5279)

Red Hat would like to thank Qinghao Tang of QIHU 360 Inc. for reporting
this issue.

All qemu-kvm users are advised to upgrade to these updated packages, which
contain a backported patch to correct this issue. After installing this
update, shut down all running virtual machines. Once all virtual machines
have shut down, start them again 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/):

1256672 - CVE-2015-5279 qemu: Heap overflow vulnerability in ne2000_receive() function

6. Package List:

Red Hat Enterprise Linux Desktop (v. 6):

Source:
qemu-kvm-0.12.1.2-2.479.el6_7.2.src.rpm

i386:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.i686.rpm

x86_64:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-img-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.479.el6_7.2.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
qemu-kvm-0.12.1.2-2.479.el6_7.2.src.rpm

x86_64:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-img-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.479.el6_7.2.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
qemu-kvm-0.12.1.2-2.479.el6_7.2.src.rpm

i386:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.i686.rpm

ppc64:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.ppc64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.ppc64.rpm

x86_64:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-img-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.479.el6_7.2.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
qemu-kvm-0.12.1.2-2.479.el6_7.2.src.rpm

i386:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.i686.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.i686.rpm

x86_64:
qemu-guest-agent-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-img-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.2.x86_64.rpm
qemu-kvm-tools-0.12.1.2-2.479.el6_7.2.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-2015-5279
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

iD8DBQFWKRPeXlSAg2UNWIIRAvYxAKCHQD6yhKljk8bnWCie88MgExYBnQCgiCEK
23wgcfGCzJu/0fF99zIN/As=
=rqkH
-----END PGP SIGNATURE-----

--
RHSA-announce mailing list
RHSA-announce@redhat.com
https://www.redhat.com/mailman/listinfo/rhsa-announce
 
 


Go to the Top of This SecurityTracker Archive Page





Home   |    View Topics   |    Search   |    Contact Us

This web site uses cookies for web analytics. Learn More

Copyright 2021, SecurityGlobal.net LLC