CVE-2020-17008 splWOW64 Elevation of Privilege Patch Bypass

2020-12-3000:00:00

attackerkb.com

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

23.2%

JSON

This CVE is the result of a patch bypass for CVE-2020-0986, reported to Microsoft by Kaspersky in December 2019 and patched in June 2020. Google Project Zero researcher Maddie Stone notified Microsoft on September 24, 2020 that the fix for Kaspersky’s reported vulnerability was incomplete. CVE-2020-17008 was published on December 23, 2020 as part of Google’s 90-day disclosure deadline.

Notably, CVE-2020-0986 was exploited in the wild as part of Operation PowerFall. Stone’s tweet thread on the incomplete patch is here.

Recent assessments:

Assessed Attacker Value: 0
Assessed Attacker Value: 0Assessed Attacker Value: 0