CVE-2018-19967

MEDIUM
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

An issue was discovered in Xen through 4.11.x on Intel x86 platforms allowing guest OS users to cause a denial of service (host OS hang) because Xen does not work around Intel's mishandling of certain HLE transactions associated with the KACQUIRE instruction prefix.

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00057.html

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00072.html

http://www.securityfocus.com/bid/106182

https://support.citrix.com/article/CTX239432

https://www.debian.org/security/2019/dsa-4369

https://xenbits.xen.org/xsa/advisory-282.html

Details

Source: MITRE

Published: 2018-12-08

Updated: 2019-04-17

Type: CWE-20

Risk Information

CVSS v2

Base Score: 4.9

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 6.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Impact Score: 4

Exploitability Score: 2

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* versions up to 4.11.1 (inclusive)

Configuration 2

OR

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Tenable Plugins

View all (12 total)

IDNameProductFamilySeverity
140019OracleVM 3.4 : xen (OVMSA-2020-0039) (Bunker Buster) (Foreshadow) (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout) (Meltdown) (POODLE) (Spectre)NessusOracleVM Local Security Checks
critical
124147openSUSE Security Update : xen (openSUSE-2019-1226)NessusSuSE Local Security Checks
high
124141openSUSE Security Update : xen (openSUSE-2019-1199)NessusSuSE Local Security Checks
medium
123993SUSE SLES12 Security Update : xen (SUSE-SU-2019:0921-1)NessusSuSE Local Security Checks
high
123783SUSE SLED15 / SLES15 Security Update : Recommended update for xen (SUSE-SU-2019:0875-1)NessusSuSE Local Security Checks
medium
123634SUSE SLES12 Security Update : xen (SUSE-SU-2019:0827-1)NessusSuSE Local Security Checks
critical
123633SUSE SLES12 Security Update : xen (SUSE-SU-2019:0825-1)NessusSuSE Local Security Checks
critical
121168Debian DSA-4369-1 : xen - security updateNessusDebian Local Security Checks
high
121004SUSE SLES11 Security Update : xen (SUSE-SU-2019:13921-1)NessusSuSE Local Security Checks
critical
120983SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2019:0003-1)NessusSuSE Local Security Checks
critical
119288Xen Project HLE Transaction 'XACQUIRE' DoS (XSA-282)NessusMisc.
medium
119148Citrix XenServer Multiple Vulnerabilities (CTX239432)NessusMisc.
high