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ubuntucveUbuntu.comUB:CVE-2020-2732
HistoryFeb 24, 2020 - 12:00 a.m.

CVE-2020-2732

2020-02-2400:00:00
ubuntu.com
ubuntu.com
19

6.8 Medium

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.3 Low

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:A/AC:M/Au:S/C:P/I:N/A:N

0.0005 Low

EPSS

Percentile

16.6%

JSON

A flaw was discovered in the way that the KVM hypervisor handled
instruction emulation for an L2 guest when nested virtualisation is
enabled. Under some circumstances, an L2 guest may trick the L0 guest into
accessing sensitive L1 resources that should be inaccessible to the L2
guest.

Bugs

Notes

Author Note
sbeattie only systems running Intel processors are affected.
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-91.92UNKNOWN
ubuntu19.10noarchlinux< 5.3.0-42.34UNKNOWN
ubuntu16.04noarchlinux< 4.4.0-176.206UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1063.67UNKNOWN
ubuntu19.10noarchlinux-aws< 5.3.0-1013.14UNKNOWN
ubuntu14.04noarchlinux-aws< 4.4.0-1064.68) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN
ubuntu16.04noarchlinux-aws< 4.4.0-1104.115UNKNOWN
ubuntu18.04noarchlinux-aws-5.0< 5.0.0-1027.30UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1063.67~16.04.1UNKNOWN
ubuntu18.04noarchlinux-azure< 5.0.0-1035.37UNKNOWN
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6.8 Medium

CVSS3

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

2.3 Low

CVSS2

Access Vector

ADJACENT_NETWORK

Access Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:A/AC:M/Au:S/C:P/I:N/A:N

0.0005 Low

EPSS

Percentile

16.6%

JSON
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