CVE-2022-2347

Publication date 23 September 2022

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

There exists an unchecked length field in UBoot. The U-Boot DFU implementation does not bound the length field in USB DFU download setup packets, and it does not verify that the transfer direction corresponds to the specified command. Consequently, if a physical attacker crafts a USB DFU download setup packet with a `wLength` greater than 4096 bytes, they can write beyond the heap-allocated request buffer.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
u-boot	24.04 LTS noble	Fixed 2022.07+dfsg-1ubuntu7
	23.10 mantic	Fixed 2022.07+dfsg-1ubuntu7
	23.04 lunar	Fixed 2022.07+dfsg-1ubuntu7
	22.10 kinetic	Fixed 2022.07+dfsg-1ubuntu4.2
	22.04 LTS jammy	Fixed 2022.01+dfsg-2ubuntu2.3
	21.10 impish	Ignored
	20.04 LTS focal	Fixed 2021.01+dfsg-3ubuntu0~20.04.5
	18.04 LTS bionic	Fixed 2020.10+dfsg-1ubuntu0~18.04.3
	16.04 LTS xenial	Needs evaluation
	14.04 LTS trusty	Not in release
u-boot-nezha	24.04 LTS noble	Vulnerable
	23.10 mantic	Ignored
	23.04 lunar	Fixed 2022.10-1089-g528ae9bc6c-0ubuntu1.23.04.2
	22.10 kinetic	Ignored
	22.04 LTS jammy	Fixed 2022.04+git20220405.7446a472-0ubuntu0.4
	20.04 LTS focal	Not in release
	18.04 LTS bionic	Not in release
	16.04 LTS xenial	Ignored
	14.04 LTS trusty	Ignored

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
u-boot	Upstream: fbce985

Severity score breakdown

Parameter	Value
Base score	7.1 · High
Attack vector	Physical
Attack complexity	High
Privileges required	None
User interaction	None
Scope	Changed
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CVE-2022-2347

Cvss 3 Severity Score

Status

Patch details

Severity score breakdown

References

Related Ubuntu Security Notices (USN)

Other references