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.
Published 2022-09-23 13:15:10
Updated 2022-09-29 13:51:06
Source Google Inc.
View at NVD,   CVE.org
Vulnerability category: OverflowMemory Corruption

Products affected by CVE-2022-2347

  • Denx » U-boot
    Versions from including (>=) 2012.10 and up to, including, (<=) 2022.07
    cpe:2.3:a:denx:u-boot:*:*:*:*:*:*:*:*

Exploit prediction scoring system (EPSS) score for CVE-2022-2347

0.08%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 36 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-2347

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.7
HIGH CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
1.0
6.0
Google Inc.
7.1
HIGH CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
0.5
6.0
NIST

CWE ids for CVE-2022-2347

  • A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
    Assigned by: cve-coordination@google.com (Secondary)
  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-2347

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