CVE-2017-2620 Detail

Current 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.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  9.9 CRITICAL
Vector:  CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Nist CVSS score does not match with CNA score
CNA:  Red Hat, Inc.
Base Score:  5.5 MEDIUM
Vector:  CVSS:3.0/AV:A/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
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 Third Party Advisory 
http://www.openwall.com/lists/oss-security/2017/02/21/1 Mailing List  Third Party Advisory 
http://www.securityfocus.com/bid/96378 Third Party Advisory  VDB Entry 
http://www.securitytracker.com/id/1037870 Third Party Advisory  VDB Entry 
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-2620 Issue Tracking  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html
https://lists.gnu.org/archive/html/qemu-devel/2017-02/msg04700.html Patch  Third Party Advisory 
https://security.gentoo.org/glsa/201703-07 Third Party Advisory 
https://security.gentoo.org/glsa/201704-01 Third Party Advisory 
https://support.citrix.com/article/CTX220771 Third Party Advisory 
https://xenbits.xen.org/xsa/advisory-209.html Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-787 Out-of-bounds Write cwe source acceptance level NIST   Reference acceptance level Red Hat, Inc.  
CWE-125 Out-of-bounds Read cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

5 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-2620
NVD Published Date:
07/27/2018
NVD Last Modified:
09/07/2018
Source:
Red Hat, Inc.