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CVE-2018-7858

Date: March 12, 2018

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.

Severity Score

Related Resources (14)

http://www.securityfocus.com/bid/103350
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00042.html
http://www.openwall.com/lists/oss-security/2018/03/09/1
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-7858
https://security-tracker.debian.org/tracker/CVE-2018-7858
https://access.redhat.com/errata/RHSA-2018:1416
https://access.redhat.com/errata/RHSA-2018:1369
https://access.redhat.com/security/cve/CVE-2018-7858
https://access.redhat.com/errata/RHSA-2018:2162
https://usn.ubuntu.com/3649-1/
https://nvd.nist.gov/vuln/detail/CVE-2018-7858
https://bugzilla.redhat.com/show_bug.cgi?id=1553402
https://lists.nongnu.org/archive/html/qemu-devel/2018-03/msg02174.html
https://www.mend.io/vulnerability-database/CVE-2018-7858

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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