CVE-2017-15594

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 4.9.x allowing x86 SVM PV guest OS users to cause a denial of service (hypervisor crash) or gain privileges because IDT settings are mishandled during CPU hotplugging.

References

http://www.securitytracker.com/id/1039568

https://lists.debian.org/debian-lts-announce/2018/10/msg00021.html

https://security.gentoo.org/glsa/201801-14

https://support.citrix.com/article/CTX228867

https://www.debian.org/security/2017/dsa-4050

https://xenbits.xen.org/xsa/advisory-244.html

Details

Source: MITRE

Published: 2017-10-18

Updated: 2019-10-03

Risk Information

CVSS v2

Base Score: 4.6

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

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

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 up to 4.9.0 (inclusive)

Tenable Plugins

View all (26 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
118503Debian DLA-1559-1 : xen security updateNessusDebian Local Security Checks
high
111992OracleVM 3.4 : xen (OVMSA-2018-0248) (Bunker Buster) (Foreshadow) (Meltdown) (POODLE) (Spectre)NessusOracleVM Local Security Checks
critical
106038GLSA-201801-14 : Xen: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
105971Fedora 27 : xen (2017-c432db2971)NessusFedora Local Security Checks
high
104819Debian DSA-4050-1 : xen - security updateNessusDebian Local Security Checks
critical
104349openSUSE Security Update : xen (openSUSE-2017-1239)NessusSuSE Local Security Checks
high
104347Fedora 25 : xen (2017-d4709b0d8b)NessusFedora Local Security Checks
high
104310Fedora 26 : xen (2017-5bcddc1984)NessusFedora Local Security Checks
high
104255SUSE SLES12 Security Update : xen (SUSE-SU-2017:2873-1)NessusSuSE Local Security Checks
high
104252SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2017:2864-1)NessusSuSE Local Security Checks
high
104249OracleVM 3.4 : xen (OVMSA-2017-0166)NessusOracleVM Local Security Checks
critical
104209SUSE SLES12 Security Update : xen (SUSE-SU-2017:2856-1)NessusSuSE Local Security Checks
high
104201OracleVM 3.2 / 3.3 / 3.4 : xen (OVMSA-2017-0162)NessusOracleVM Local Security Checks
critical
104099SUSE SLES11 Security Update : xen (SUSE-SU-2017:2815-1)NessusSuSE Local Security Checks
high
104098SUSE SLES11 Security Update : xen (SUSE-SU-2017:2812-1)NessusSuSE Local Security Checks
high
104085openSUSE Security Update : xen (openSUSE-2017-1181)NessusSuSE Local Security Checks
high
103979Xen Hypervisor New CPU Interrupt Descriptor Table (IDT) Copy Handling Guest-to-Host Privilege Escalation (XSA-244)NessusMisc.
high
103978Xen Hypervisor Translated Guest Self-linear Shadow Mapping Handling Guest-to-Host Privilege Escalation (XSA-243)NessusMisc.
high
103977Xen Hypervisor Page Type Reference Handling Memory Exhaustion Guest-to-Host DoS (XSA-242)NessusMisc.
high
103976Xen Hypervisor TLB Flush Request Handling Race Condition System Memory Access Guest-to-Host Privilege Escalation (XSA-241)NessusMisc.
high
103975Xen Hypervisor Pagetable De-typing Recursion Handling Guest-to-Host DoS (XSA-240)NessusMisc.
high
103974Xen Hypervisor I/O Intercept Code Hypervisor Stack Guest-to-Host Information Disclosure (XSA-239)NessusMisc.
high
103973Xen Hypervisor Multiple Functions DMOP Handling Guest-to-Host DoS (XSA-238)NessusMisc.
high
103972Xen Hypervisor PCI MSI Interrupt Setup Multiple Guest-to-Host Privilege Escalation (XSA-237)NessusMisc.
high
103927Citrix XenServer Multiple Vulnerabilities (CTX228867)NessusMisc.
high