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redhatcveRedhat.comRH:CVE-2020-9770
HistorySep 24, 2020 - 3:46 a.m.

CVE-2020-9770

2020-09-2403:46:26
redhat.com
access.redhat.com
13
logic issue
state management
ios 13.4
ipados 13.4
bluetooth interception
privileged network

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS3

6.5

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

EPSS

0.001

Percentile

17.1%

A logic issue was addressed with improved state management. This issue is fixed in iOS 13.4 and iPadOS 13.4. An attacker in a privileged network position may be able to intercept Bluetooth traffic.

Mitigation

Bluetooth Low Energy can be disabled altogether if it is not required, using the configuration below. This will prevent BLE devices from connecting with the host, disabling this attack

ControllerMode=bredr

CVSS2

4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:L/Au:S/C:P/I:N/A:N

CVSS3

6.5

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

EPSS

0.001

Percentile

17.1%