Lucene search

K
msrcMicrosoft Security Response CenterMSRC:4E79428DD6508A321BB555312927DDDB
HistoryAug 13, 2018 - 7:00 a.m.

Analysis and mitigation of L1 Terminal Fault (L1TF)

2018-08-1307:00:00
Microsoft Security Response Center
msrc.microsoft.com
14

CVSS2

5.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.4

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.002

Percentile

64.5%

In January 2018, Microsoft released an advisory and security updates for a new class of hardware vulnerabilities involving speculative execution side channels (known as Spectre and Meltdown). In this blog post, we will provide a technical analysis of a new speculative execution side channel vulnerability known as L1 Terminal Fault (L1TF) which has been assigned CVE-2018-3615 (for SGX), CVE-2018-3620 (for operating systems and SMM), and CVE-2018-3646 (for virtualization).

CVSS2

5.4

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

6.4

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

LOW

Availability Impact

NONE

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

EPSS

0.002

Percentile

64.5%