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GoogleOSV:ASB-A-236688380

HistoryAug 01, 2023 - 12:00 a.m.

Calling ContentProvider.openFile() with Binding.getCallingUid() == 1000

2023-08-0100:00:00

Google

osv.dev

contentprovider

openfile

binding

callinguid

activitymanagerservice

confused deputy

restricted files

third party app

local information disclosure

execution privileges

user interaction

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.4

Confidence

High

EPSS

Percentile

5.1%

JSON

In openContentUri of ActivityManagerService.java, there is a possible way for a third party app to obtain restricted files due to a confused deputy. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

References

android.googlesource.com/platform/frameworks/base/+/d10b27e539f7bc91c2360d429b9d05f05274670d

source.android.com/security/bulletin/2023-08-01

CVSS3

5.5

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

6.4

Confidence

High

EPSS

Percentile

5.1%

JSON

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