Vulnerability CVE-2016-9603


Published: 2018-07-27   Modified: 2018-07-28

Description:
A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support before 2.9; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.

Type:

CWE-119

(Improper Restriction of Operations within the Bounds of a Memory Buffer)

CVSS2 => (AV:N/AC:L/Au:S/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
9/10
10/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
Redhat -> Openstack 
Redhat -> Enterprise linux desktop 
Redhat -> Enterprise linux server 
Redhat -> Enterprise linux server aus 
Redhat -> Enterprise linux server eus 
Redhat -> Enterprise linux workstation 
QEMU -> QEMU 
Debian -> Debian linux 
Citrix -> Xenserver 

 References:
http://www.securityfocus.com/bid/96893
http://www.securitytracker.com/id/1038023
https://access.redhat.com/errata/RHSA-2017:0980
https://access.redhat.com/errata/RHSA-2017:0981
https://access.redhat.com/errata/RHSA-2017:0982
https://access.redhat.com/errata/RHSA-2017:0983
https://access.redhat.com/errata/RHSA-2017:0984
https://access.redhat.com/errata/RHSA-2017:0985
https://access.redhat.com/errata/RHSA-2017:0987
https://access.redhat.com/errata/RHSA-2017:0988
https://access.redhat.com/errata/RHSA-2017:1205
https://access.redhat.com/errata/RHSA-2017:1206
https://access.redhat.com/errata/RHSA-2017:1441
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9603
https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
https://security.gentoo.org/glsa/201706-03
https://support.citrix.com/article/CTX221578

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