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ubuntucveUbuntu.comUB:CVE-2020-0423
HistoryOct 14, 2020 - 12:00 a.m.

CVE-2020-0423

2020-10-1400:00:00
ubuntu.com
ubuntu.com
14
android kernel
local privilege escalation
use-after-free
binder module

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

7.8

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

EPSS

0

Percentile

5.1%

JSON

In binder_release_work of binder.c, there is a possible use-after-free due
to improper locking. This could lead to local escalation of privilege in
the kernel with no additional execution privileges needed. User interaction
is not needed for exploitation.Product: AndroidVersions: Android
kernelAndroid ID: A-161151868References: N/A

Notes

Author Note
sbeattie The binder module is enabled in Ubuntu kernels but not loaded by default. Systems without binder loaded should not be vulnerable.
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlinux< 4.15.0-129.132UNKNOWN
ubuntu20.04noarchlinux< 5.4.0-56.62UNKNOWN
ubuntu20.10noarchlinux< 5.8.0-31.33UNKNOWN
ubuntu18.04noarchlinux-aws< 4.15.0-1091.96UNKNOWN
ubuntu20.04noarchlinux-aws< 5.4.0-1030.31UNKNOWN
ubuntu20.10noarchlinux-aws< 5.8.0-1014.15UNKNOWN
ubuntu18.04noarchlinux-aws-5.4< 5.4.0-1030.31~18.04.1UNKNOWN
ubuntu16.04noarchlinux-aws-hwe< 4.15.0-1091.96~16.04.1UNKNOWN
ubuntu20.04noarchlinux-azure< 5.4.0-1032.33UNKNOWN
ubuntu20.10noarchlinux-azure< 5.8.0-1013.14UNKNOWN
Rows per page:
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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

7.8

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

EPSS

0

Percentile

5.1%

JSON
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