CVE-2022-4510

Summary

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.

Affected Software

Weaknesses

• CWE-22: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Workarounds

The following workaround would fix the vulnerability:

• removing the unpfs extractor from your local install of binwalk
• disabling the unpfs extractor by editing binwalk's extract.conf configuration file
• apply the fix provided at  https://github.com/ReFirmLabs/binwalk/pull/617 https://github.com/ReFirmLabs/binwalk/pull/617

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/ReFirmLabs/binwalk/pull/617
• https://security.gentoo.org/glsa/202309-07
• https://lists.debian.org/debian-lts-announce/2025/12/msg00022.html

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://github.com/ReFirmLabs/binwalk/pull/617
• https://security.gentoo.org/glsa/202309-07

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