CVE-2020-27673

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 the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service (host OS hang) via a high rate of events to dom0, aka CID-e99502f76271.

References

https://xenbits.xen.org/xsa/advisory-332.html

https://github.com/torvalds/linux/commit/e99502f76271d6bc4e374fe368c50c67a1fd3070

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=e99502f76271d6bc4e374fe368c50c67a1fd3070

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html

http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html

https://security.gentoo.org/glsa/202011-06

https://lists.debian.org/debian-lts-announce/2020/12/msg00015.html

https://lists.debian.org/debian-lts-announce/2020/12/msg00027.html

http://www.openwall.com/lists/oss-security/2021/01/19/6

Details

Source: MITRE

Published: 2020-10-22

Updated: 2021-07-21

Type: CWE-400

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: 5.5

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

AND

Tenable Plugins

View all (36 total)

IDNameProductFamilySeverity
151756openSUSE 15 Security Update : kernel (openSUSE-SU-2021:1977-1)NessusSuSE Local Security Checks
critical
151307EulerOS Virtualization for ARM 64 3.0.2.0 : kernel (EulerOS-SA-2021-2075)NessusHuawei Local Security Checks
high
150927SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1975-1)NessusSuSE Local Security Checks
critical
150901SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:1977-1)NessusSuSE Local Security Checks
critical
149717SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1624-1)NessusSuSE Local Security Checks
high
149716SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1623-1)NessusSuSE Local Security Checks
high
149491SUSE SLES12 Security Update : kernel (SUSE-SU-2021:1596-1)NessusSuSE Local Security Checks
high
149462SUSE SLES15 Security Update : kernel (SUSE-SU-2021:1573-1)NessusSuSE Local Security Checks
high
147978Ubuntu 20.04 LTS / 20.10 : Linux kernel vulnerabilities (USN-4751-1)NessusUbuntu Local Security Checks
high
147690EulerOS Virtualization 2.9.0 : kernel (EulerOS-SA-2021-1642)NessusHuawei Local Security Checks
high
147512EulerOS Virtualization 2.9.1 : kernel (EulerOS-SA-2021-1604)NessusHuawei Local Security Checks
high
146476SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0437-1)NessusSuSE Local Security Checks
high
145005Amazon Linux AMI : kernel (ALAS-2021-1461)NessusAmazon Linux Local Security Checks
medium
144905Oracle Linux 6 / 7 : Unbreakable Enterprise kernel (ELSA-2021-9009)NessusOracle Linux Local Security Checks
high
144693EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1028)NessusHuawei Local Security Checks
high
144687EulerOS 2.0 SP9 : kernel (EulerOS-SA-2021-1009)NessusHuawei Local Security Checks
high
144494Debian DLA-2494-1 : linux security updateNessusDebian Local Security Checks
high
144464Amazon Linux AMI : kernel (ALAS-2020-1462) (deprecated)NessusAmazon Linux Local Security Checks
high
144210Oracle Linux 7 / 8 : Unbreakable Enterprise kernel (ELSA-2020-5996)NessusOracle Linux Local Security Checks
high
144207Oracle Linux 7 : Unbreakable Enterprise kernel (ELSA-2020-5995)NessusOracle Linux Local Security Checks
high
144168EulerOS 2.0 SP8 : kernel (EulerOS-SA-2020-2514)NessusHuawei Local Security Checks
medium
144097Debian DLA-2483-1 : linux-4.19 security updateNessusDebian Local Security Checks
high
144068Photon OS 3.0: Linux PHSA-2020-3.0-0174NessusPhotonOS Local Security Checks
medium
144062Photon OS 1.0: Linux PHSA-2020-1.0-0345NessusPhotonOS Local Security Checks
medium
143875SUSE SLES15 Security Update : kernel (SUSE-SU-2020:3532-1)NessusSuSE Local Security Checks
high
143857SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3544-1)NessusSuSE Local Security Checks
high
143820SUSE SLES12 Security Update : xen (SUSE-SU-2020:3050-1)NessusSuSE Local Security Checks
high
143813SUSE SLES12 Security Update : xen (SUSE-SU-2020:3088-1)NessusSuSE Local Security Checks
high
143811SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2020:3051-1)NessusSuSE Local Security Checks
high
143809SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2020:3272-1)NessusSuSE Local Security Checks
high
143773SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3281-1)NessusSuSE Local Security Checks
high
143670SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2020:3049-1)NessusSuSE Local Security Checks
high
143589Amazon Linux 2 : kernel (ALAS-2020-1566)NessusAmazon Linux Local Security Checks
medium
142854GLSA-202011-06 : Xen: Multiple vulnerabilitiesNessusGentoo Local Security Checks
high
142526openSUSE Security Update : xen (openSUSE-2020-1844)NessusSuSE Local Security Checks
high
142185openSUSE Security Update : xen (openSUSE-2020-1783)NessusSuSE Local Security Checks
high