// For flags

CVE-2022-2347

Unchecked Download size in Uboot

Severity Score

7.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se presenta un campo de longitud no comprobado en UBoot. La implementación de U-Boot DFU no vincula el campo de longitud en los paquetes de configuración de descarga de USB DFU, y no verifica que la dirección de transferencia sea correspondida con el comando especificado. En consecuencia, si un atacante físico diseña un paquete de configuración de descarga USB DFU con una "wLength" superior a 4096 bytes, puede escribir más allá del búfer de petición asignado a la pila.

It was discovered that U-Boot incorrectly handled certain USB DFU download setup packets. A local attacker could use this issue to cause U-Boot to crash, resulting in a denial of service, or possibly execute arbitrary code. Nicolas Bidron and Nicolas Guigo discovered that U-Boot incorrectly handled certain fragmented IP packets. A local attacker could use this issue to cause U-Boot to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 22.04 LTS.

*Credits: N/A
CVSS Scores
Attack Vector
Physical
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
High
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-07-08 CVE Reserved
  • 2022-09-23 CVE Published
  • 2024-09-16 CVE Updated
  • 2024-09-16 First Exploit
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-122: Heap-based Buffer Overflow
  • CWE-787: Out-of-bounds Write
CAPEC
References (1)
URL Tag Source
URL Date SRC
https://seclists.org/oss-sec/2022/q3/41 2024-09-16
URL Date SRC
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Denx
Search vendor "Denx"
 U-boot
Search vendor "Denx" for product "U-boot"
 >= 2012.10 <= 2022.07
Search vendor "Denx" for product "U-boot" and version " >= 2012.10 <= 2022.07"
-
Affected