Buffer overflow in Denx U-Boot
CVE-2022-33967
squashfs filesystem implementation of U-Boot versions from v2020.10-rc2 to v2022.07-rc5 contains a heap-based buffer overflow vulnerability due to a defect in the metadata reading process. Loading a specially crafted squashfs image may lead to a denial-of-service (DoS) condition or arbitrary code execution.
Vulnerability class: Buffer Overflow
EPSS: 0.006 (42.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Denx U-boot — versions 2020.10, 2021.01, 2021.04
- Denx Software Engineering U-boot — versions versions from v2020.10-rc2 to v2022.07-rc5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- vultures@jpcert.or.jp (Product, x_refsource_MISC)
- vultures@jpcert.or.jp (Exploit, Mailing List, x_refsource_MISC, Vendor Advisory)
- vultures@jpcert.or.jp (Patch, Third Party Advisory, x_refsource_MISC, Vendor Advisory)
- vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2022-33967?
- CVE-2022-33967 is a high-severity vulnerability in Denx U-Boot, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2022-07-20.
- How severe is CVE-2022-33967?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2022-33967 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.