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GoogleOSV:ASB-A-243849844

HistoryDec 01, 2022 - 12:00 a.m.

Accessibility Service does not list/report all enabled 3rd party a11y services on the device

2022-12-0100:00:00

Google

osv.dev

accessibility service

privilege escalation

software

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

AI Score

Confidence

High

EPSS

Percentile

5.1%

JSON

In getEnabledAccessibilityServiceList of AccessibilityManager.java, there is a possible way to hide an accessibility service due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

References

android.googlesource.com/platform/frameworks/base/+/2bc4d49c2b0265f5de1c62d1342b1426cc5e1377

source.android.com/security/bulletin/2022-12-01

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

AI Score

Confidence

High

EPSS

Percentile

5.1%

JSON

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