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CVE-2022-2347

Unchecked Download size in Uboot

Published: Sep 23, 2022Updated: May 12, 2026 Sources: CVE List NVD BDU csafCWE-122
NVD MITRE
7.7CVSSHIGH
EPSS Score
0.6%
Top 56.9%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:LAC:HPR:NUI:RS:CC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-122CWE-787

Affected Products

UbootUboot
Embedded
Hardware Firmware / bios-uefi
Debian GNU/LinuxСообщество свободного программного обеспечения
On-premOS
Operating Systems / linux-distro
Astra Linux Special EditionООО «РусБИТех-Астра»
On-premOS
Operating Systems / linux-distro
U-BootСообщество свободного программного обеспечения
LibraryLibrary
OSS Libraries / generic-library
u-bootdenx
Embedded
DevTools & CI / build-test-tools
ubootoss-projectHardware Firmwareaka u-boot, u boot
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
ооо «русбитех-астра»commercialRUOperating Systemsaka rusbitech-astra
denxoss-projectDevTools & CI

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://seclists.org/oss-sec/2022/q3/41
seclists.org
https://cert-portal.siemens.com/productcert/csaf/ssa-577017.json
cert-portal.siemens.com
https://cert-portal.siemens.com/productcert/html/ssa-577017.html
cert-portal.siemens.com
and 80 more references View all →

Timeline

Published
Sep 23, 2022
Last Updated
May 12, 2026

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