Vulnerability CVE-2017-2620


Published: 2018-07-27

Description:
Quick emulator (QEMU) before 2.8 built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process.

Type:

CWE-787

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
XEN -> XEN 
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://rhn.redhat.com/errata/RHSA-2017-0328.html
http://rhn.redhat.com/errata/RHSA-2017-0329.html
http://rhn.redhat.com/errata/RHSA-2017-0330.html
http://rhn.redhat.com/errata/RHSA-2017-0331.html
http://rhn.redhat.com/errata/RHSA-2017-0332.html
http://rhn.redhat.com/errata/RHSA-2017-0333.html
http://rhn.redhat.com/errata/RHSA-2017-0334.html
http://rhn.redhat.com/errata/RHSA-2017-0350.html
http://rhn.redhat.com/errata/RHSA-2017-0351.html
http://rhn.redhat.com/errata/RHSA-2017-0352.html
http://rhn.redhat.com/errata/RHSA-2017-0396.html
http://rhn.redhat.com/errata/RHSA-2017-0454.html
http://www.openwall.com/lists/oss-security/2017/02/21/1
http://www.securityfocus.com/bid/96378
http://www.securitytracker.com/id/1037870
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2620
https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.html
https://security.gentoo.org/glsa/201703-07
https://security.gentoo.org/glsa/201704-01
https://support.citrix.com/article/CTX220771
https://xenbits.xen.org/xsa/advisory-209.html

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