CVE-2017-2620

HIGH

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.

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

Details

Source: MITRE

Published: 2018-07-27

Updated: 2018-09-07

Type: CWE-125

Risk Information

CVSS v2.0

Base Score: 9

Vector: (AV:N/AC:L/Au:S/C:C/I:C/A:C)

Impact Score: 10

Exploitability Score: 8

Severity: HIGH

CVSS v3.0

Base Score: 9.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Impact Score: 6

Exploitability Score: 3.1

Severity: CRITICAL