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freebsdFreeBSDD4CC994F-B61D-11EC-9EBC-1C697AA5A594
HistoryApr 06, 2022 - 12:00 a.m.

FreeBSD -- 802.11 heap buffer overflow

2022-04-0600:00:00
vuxml.freebsd.org
18
freebsd
802.11
heap buffer overflow
beacon handling
remote code execution
kernel memory
wi-fi client
scanning mode

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.001

Percentile

28.8%

Problem Description:
The 802.11 beacon handling routine failed to validate the length of
an IEEE 802.11s Mesh ID before copying it to a heap-allocated
buffer.
Impact:
While a FreeBSD Wi-Fi client is in scanning mode (i.e., not
associated with a SSID) a malicious beacon frame may overwrite kernel
memory, leading to remote code execution.

OSVersionArchitecturePackageVersionFilename
FreeBSDanynoarchfreebsd-kernel= 13.0UNKNOWN
FreeBSDanynoarchfreebsd-kernel< 13.0_11UNKNOWN

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.001

Percentile

28.8%

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