Vulnerability Details : CVE-2017-2620
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.
Vulnerability category: Memory CorruptionExecute code
Products affected by CVE-2017-2620
- cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack:5.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xenserver:6.2.0:sp1:*:*:*:*:*:*
- cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:citrix:xenserver:6.5:sp1:*:*:*:*:*:*
- cpe:2.3:a:citrix:xenserver:7.1:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.7.1:r3:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.7.1:r4:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.7.1:r1:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.7.1:r2:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.7.1:r7:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.7.1:r6:*:*:*:*:*:*
- cpe:2.3:o:xen:xen:4.7.1:r5:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-2620
2.54%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 85 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-2620
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.0
|
HIGH | AV:N/AC:L/Au:S/C:C/I:C/A:C |
8.0
|
10.0
|
NIST | |
|
4.9
|
MEDIUM | AV:A/AC:M/Au:S/C:P/I:P/A:P |
4.4
|
6.4
|
Red Hat, Inc. | |
|
9.9
|
CRITICAL | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
3.1
|
6.0
|
NIST | |
|
5.5
|
MEDIUM | CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L |
1.3
|
3.7
|
Red Hat, Inc. |
CWE ids for CVE-2017-2620
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by:
- nvd@nist.gov (Primary)
- secalert@redhat.com (Secondary)
References for CVE-2017-2620
-
https://security.gentoo.org/glsa/201704-01
QEMU: Multiple vulnerabilities (GLSA 201704-01) — Gentoo securityThird Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2017-0328.html
RHSA-2017:0328 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.openwall.com/lists/oss-security/2017/02/21/1
oss-security - CVE-2017-2620 Qemu: display: cirrus: out-of-bounds access issue while in cirrus_bitblt_cputovideoMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
[SECURITY] [DLA 1497-1] qemu security update
-
http://rhn.redhat.com/errata/RHSA-2017-0333.html
RHSA-2017:0333 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://www.securitytracker.com/id/1037870
Xen Out-of-Bounds Memory Write Error in cirrus_bitblt_cputovideo() Lets Local Administrative Users on a Guest System Gain Elevated Privileges on the Host System - SecurityTrackerThird Party Advisory;VDB Entry
-
http://rhn.redhat.com/errata/RHSA-2017-0331.html
RHSA-2017:0331 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2017-0352.html
RHSA-2017:0352 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://support.citrix.com/article/CTX220771
Citrix XenServer Multiple Security UpdatesThird Party Advisory
-
https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.html
[Qemu-devel] [PATCH] cirrus: add blit_is_unsafe call to cirrus_bitblt_cpPatch;Third Party Advisory
-
https://xenbits.xen.org/xsa/advisory-209.html
XSA-209 - Xen Security AdvisoriesThird Party Advisory
-
http://www.securityfocus.com/bid/96378
Qemu CVE-2017-2620 Remote Code Execution VulnerabilityThird Party Advisory;VDB Entry
-
http://rhn.redhat.com/errata/RHSA-2017-0454.html
RHSA-2017:0454 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2017-0350.html
RHSA-2017:0350 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2017-0332.html
RHSA-2017:0332 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2017-0351.html
RHSA-2017:0351 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2017-0330.html
RHSA-2017:0330 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2017-0396.html
RHSA-2017:0396 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2017-0334.html
RHSA-2017:0334 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
http://rhn.redhat.com/errata/RHSA-2017-0329.html
RHSA-2017:0329 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://security.gentoo.org/glsa/201703-07
Xen: Privilege Escalation (GLSA 201703-07) — Gentoo securityThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html
[SECURITY] [DLA 1270-1] xen security updateThird Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2620
1420484 – (CVE-2017-2620, xsa209) CVE-2017-2620 Qemu: display: cirrus: potential arbitrary code execution via cirrus_bitblt_cputovideoIssue Tracking;Third Party Advisory
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