CVE-2022-2347

Publication date 23 September 2022

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.1 · High

Score breakdown

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

Package Ubuntu Release Status
u-boot 24.10 oracular
Fixed 2022.07+dfsg-1ubuntu7
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 end of life
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 24.10 oracular
Vulnerable
24.04 LTS noble
Vulnerable
23.10 mantic Ignored end of life, was needed
23.04 lunar
Fixed 2022.10-1089-g528ae9bc6c-0ubuntu1.23.04.2
22.10 kinetic Ignored end of life, was needed
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 end of standard support
14.04 LTS trusty Ignored end of standard support

Patch details

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

Package Patch details
u-boot

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

References

Related Ubuntu Security Notices (USN)

    • USN-5764-1
    • U-Boot vulnerabilities
    • 6 December 2022
    • USN-6523-1
    • u-boot-nezha vulnerability
    • 29 November 2023

Other references