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4C2568F2-A3F4-590E-9A1A-7217265EFB12

HistoryApr 19, 2021 - 8:07 p.m.

Exploit for Incorrect Authorization in Canonical Ubuntu Linux

2021-04-1920:07:01

204

ubuntu

overlayfs

local privesc

cve-2021-3493

linux kernel

elevated privileges

patch

unprivileged mounts

security advisory

CVSS2

7.2

Attack Vector

LOCAL

Attack 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

CVSS3

8.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.5

Confidence

High

EPSS

0.006

Percentile

78.3%

JSON

CVE-2021-3493

Ubuntu OverlayFS Local Privesc

Affected Vers…

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CVSS2

7.2

Attack Vector

LOCAL

Attack 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

CVSS3

8.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.5

Confidence

High

EPSS

0.006

Percentile

78.3%

JSON

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