CVE-2017-2620

moderate-risk
Published 2018-07-27

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.

Do I need to act?

~
2.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.5/10 Medium
ADJACENT_NETWORK / HIGH complexity

Affected Products (20)

Affected Vendors

Debian Redhat Citrix Xen Qemu

References (46)

Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0328.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0329.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0330.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0331.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0332.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0333.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0334.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0350.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0351.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0352.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0396.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2017-0454.html
Mailing List http://www.openwall.com/lists/oss-security/2017/02/21/1
Third Party Advisory http://www.securityfocus.com/bid/96378
Third Party Advisory http://www.securitytracker.com/id/1037870
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2620
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
Patch https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.html
Third Party Advisory https://security.gentoo.org/glsa/201703-07
and 26 more references
43
/ 100
moderate-risk
Severity 14/34 · Moderate
Exploitability 6/34 · Minimal
Exposure 23/34 · High