Path Traversal in Microsoft Binwalk

CVE-2022-4510

A path traversal vulnerability was identified in ReFirm Labs binwalk from version 2.1.2b through 2.3.3 included. By crafting a malicious PFS filesystem file, an attacker can get binwalk's PFS extractor to extract files at arbitrary locations when binwalk is run in extraction mode (-e option). Remote code execution can be achieved by building a PFS filesystem that, upon extraction, would extract a malicious binwalk module into the folder .config/binwalk/plugins. This vulnerability is associated with program files src/binwalk/plugins/unpfs.py. This issue affects binwalk from 2.1.2b through 2.3.3 included.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.220 (97.4th 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

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2022-4510?
CVE-2022-4510 is a high-severity vulnerability in Microsoft Binwalk, classified under Path Traversal. CVSS score: 7.8/10. Published 2023-01-26.
How severe is CVE-2022-4510?
High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2022-4510 known to be exploited?
17 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.