Critical severity · published Jul 27, 2018
CVE-2016-9603
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…
9.9
CVSS
4.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)4.4% · higher than 91% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
7.0 · source: NVD
EL
Enterprise Linux Desktop · Redhat
6.0; 7.0 · source: NVD
EL
Enterprise Linux Server · Redhat
6.0; 7.0 · source: NVD
EL
Enterprise Linux Server Aus · Redhat
7.3; 7.4 · source: NVD
EL
Enterprise Linux Server Eus · Redhat
7.3; 7.4; 7.5 · source: NVD
EL
Enterprise Linux Workstation · Redhat
6.0; 7.0 · source: NVD
OP
Openstack · Redhat
5.0; 6.0; 7.0; 8; 9; 10 · source: NVD
QE
Qemu · Qemu
before 2.9.0 · source: NVD
XE
Xenserver · Citrix
6.0.2; 6.2.0; 6.5; 7.0; 7.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-9603
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-9603
Third Party Advisory
http://www.securityfocus.com/bid/96893
Third Party Advisory
http://www.securitytracker.com/id/1038023
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:0980
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:0981
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:0982
Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:0983
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