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Vulnerability Details : CVE-2018-7858

Quick Emulator (aka QEMU), when built with the Cirrus CLGD 54xx VGA Emulator support, allows local guest OS privileged users to cause a denial of service (out-of-bounds access and QEMU process crash) by leveraging incorrect region calculation when updating VGA display.
Publish Date : 2018-03-12 Last Update Date : 2019-03-29
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- CVSS Scores & Vulnerability Types

CVSS Score
2.1
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 125

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2018:1416: qemu-kvm security update (Moderate) oval:com.redhat.rhsa:def:20181416 unix
RHSA-2018:2162: qemu-kvm security update (Important) oval:com.redhat.rhsa:def:20182162 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2018-7858

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 14.04 ~~lts~~~ Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 16.04 ~~lts~~~ Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 18.04 ~~lts~~~ Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 18.10 Version Details Vulnerabilities
5 OS Opensuse Leap 42.3 Version Details Vulnerabilities
6 Application Qemu Qemu Version Details Vulnerabilities
7 OS Redhat Enterprise Linux Desktop 6.0 Version Details Vulnerabilities
8 OS Redhat Enterprise Linux Desktop 7.0 Version Details Vulnerabilities
9 OS Redhat Enterprise Linux Server 6.0 Version Details Vulnerabilities
10 OS Redhat Enterprise Linux Server 7.0 Version Details Vulnerabilities
11 OS Redhat Enterprise Linux Server Aus 7.6 Version Details Vulnerabilities
12 OS Redhat Enterprise Linux Server Eus 7.5 Version Details Vulnerabilities
13 OS Redhat Enterprise Linux Server Eus 7.6 Version Details Vulnerabilities
14 OS Redhat Enterprise Linux Server Tus 7.6 Version Details Vulnerabilities
15 OS Redhat Enterprise Linux Workstation 6.0 Version Details Vulnerabilities
16 OS Redhat Enterprise Linux Workstation 7.0 Version Details Vulnerabilities
17 OS Redhat Virtualization 4.0 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 4
Opensuse Leap 1
Qemu Qemu 1
Redhat Enterprise Linux Desktop 2
Redhat Enterprise Linux Server 2
Redhat Enterprise Linux Server Aus 1
Redhat Enterprise Linux Server Eus 2
Redhat Enterprise Linux Server Tus 1
Redhat Enterprise Linux Workstation 2
Redhat Virtualization 1

- References For CVE-2018-7858

https://access.redhat.com/errata/RHSA-2018:2162
REDHAT RHSA-2018:2162
https://usn.ubuntu.com/3649-1/
UBUNTU USN-3649-1
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html
SUSE openSUSE-SU-2019:1074
https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html
MLIST [qemu-devel] 20180308 [PATCH] vga: fix region calculation
https://access.redhat.com/errata/RHSA-2018:1369
REDHAT RHSA-2018:1369
https://bugzilla.redhat.com/show_bug.cgi?id=1553402 CONFIRM
http://www.securityfocus.com/bid/103350
BID 103350 QEMU CVE-2018-7858 Denial of Service Vulnerability Release Date:2018-03-08
http://www.openwall.com/lists/oss-security/2018/03/09/1
MLIST [oss-security] 20180309 CVE-2018-7858 Qemu: cirrus: OOB access when updating vga display
https://access.redhat.com/errata/RHSA-2018:1416
REDHAT RHSA-2018:1416

- Metasploit Modules Related To CVE-2018-7858

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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