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ubuntucveUbuntu.comUB:CVE-2021-31615
HistoryJun 25, 2021 - 12:00 a.m.

CVE-2021-31615

2021-06-2500:00:00
ubuntu.com
ubuntu.com
10
bluetooth low energy
baseband links
crafted packet
mitm
encrypted links
protocol level

CVSS2

2.9

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:A/AC:M/Au:N/C:N/I:N/A:P

CVSS3

5.3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

15.9%

Unencrypted Bluetooth Low Energy baseband links in Bluetooth Core
Specifications 4.0 through 5.2 may permit an adjacent device to inject a
crafted packet during the receive window of the listening device before the
transmitting device initiates its packet transmission to achieve full MITM
status without terminating the link. When applied against devices
establishing or using encrypted links, crafted packets may be used to
terminate an existing link, but will not compromise the confidentiality or
integrity of the link.

Bugs

Notes

Author Note
sbeattie likely needs to be fixed at the protocol level

CVSS2

2.9

Attack Vector

ADJACENT_NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:A/AC:M/Au:N/C:N/I:N/A:P

CVSS3

5.3

Attack Vector

ADJACENT

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

EPSS

0.001

Percentile

15.9%

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