CVE-2018-19966

high
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 allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.

References

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

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

https://lists.debian.org/debian-lts-announce/2019/10/msg00008.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/UXC6BME7SXJI2ZIATNXCAH7RGPI4UKTT/

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

https://xenbits.xen.org/xsa/advisory-280.html

Details

Source: MITRE

Published: 2018-12-08

Updated: 2019-10-03

Type: CWE-436

Risk Information

CVSS v2

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3

Base Score: 8.8

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

Impact Score: 6

Exploitability Score: 2

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:* versions from 4.11.0 to 4.11.1 (inclusive)

Configuration 2

OR

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

Tenable Plugins

View all (16 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
129734Debian DLA-1949-1 : xen security updateNessusDebian Local Security Checks
high
124147openSUSE Security Update : xen (openSUSE-2019-1226)NessusSuSE Local Security Checks
high
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
123167openSUSE Security Update : xen (openSUSE-2019-1046) (Foreshadow)NessusSuSE Local Security Checks
high
123046Fedora 28 : xen (2019-bce6498890)NessusFedora Local Security Checks
high
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
120987SUSE SLES12 Security Update : xen (SUSE-SU-2019:0020-1)NessusSuSE Local Security Checks
high
120983SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2019:0003-1)NessusSuSE Local Security Checks
critical
120196SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2018:4300-1) (Foreshadow)NessusSuSE Local Security Checks
high
119951openSUSE Security Update : xen (openSUSE-2018-1624) (Foreshadow)NessusSuSE Local Security Checks
high
119660Xen Project XSA-240 Mitigation Shadow Paging Conflict Vulnerability (XSA-280)NessusMisc.
high
119648SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2018:4070-1)NessusSuSE Local Security Checks
high
119642openSUSE Security Update : xen (openSUSE-2018-1530)NessusSuSE Local Security Checks
high