CVE-2018-19965

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 allowing 64-bit PV guest OS users to cause a denial of service (host OS crash) because #GP[0] can occur after a non-canonical address is passed to the TLB flushing code. NOTE: this issue exists because of an incorrect CVE-2017-5754 (aka Meltdown) mitigation.

References

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

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

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

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

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

https://xenbits.xen.org/xsa/advisory-279.html

Details

Source: MITRE

Published: 2018-12-08

Updated: 2019-10-03

Risk Information

CVSS v2

Base Score: 4.7

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

Impact Score: 6.9

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 5.6

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

Impact Score: 4

Exploitability Score: 1.1

Severity: MEDIUM

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
133763SUSE SLES12 Security Update : xen (SUSE-SU-2020:0388-1)NessusSuSE Local Security Checks
critical
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
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
119659Xen Project INVPCID with Non-Canonical Addresses DoS (XSA-279)NessusMisc.
medium
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
119148Citrix XenServer Multiple Vulnerabilities (CTX239432)NessusMisc.
high