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GoogleOSV:ASB-A-274478807

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

[Bluetooth][BTM] BTM_BleVerifySignature side-channel attack possibility

2023-12-0100:00:00

Google

osv.dev

bluetooth

btm

bleverifysignature

side-channel attack

software

privilege escalation

remote exploitation

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

7.1 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

33.5%

JSON

In BTM_BleVerifySignature of btm_ble.cc, there is a possible way to bypass signature validation due to side channel information disclosure. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CPENameOperatorVersion
platform/packages/modules/bluetootheq12
platform/packages/modules/bluetootheq13
platform/packages/modules/bluetootheq14
platform/packages/modules/bluetootheq12L
platform/packages/modules/bluetootheq11

Name	Operator	Version
platform/packages/modules/bluetooth	eq	12
platform/packages/modules/bluetooth	eq	13
platform/packages/modules/bluetooth	eq	14
platform/packages/modules/bluetooth	eq	12L
platform/packages/modules/bluetooth	eq	11

References

android.googlesource.com/platform/packages/modules/Bluetooth/+/495417bd068c35de0729d9a332639bd0699153ff

source.android.com/security/bulletin/2023-12-01

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

7.1 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

33.5%

JSON

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