What’s Vulnerable › Vulnerabilities

CVE-2023-0591: Path Traversal in ubi_reader

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-01-31 · updated 2026-06-17
• Weakness: CWE-22

Description

ubireader_extract_files is vulnerable to path traversal when run against specifically crafted UBIFS files, allowing the attacker to overwrite files outside of the extraction directory (provided the process has write access to that file or directory). This is due to the fact that a node name (dent_node.name) is considered trusted and joined to the extraction directory path during processing, then the node content is written to that joined path. By crafting a malicious UBIFS file with node names holding path traversal payloads (e.g. ../../tmp/outside.txt), it's possible to force ubi_reader to write outside of the extraction directory. This issue affects ubi-reader before 0.8.5.

Affected products

• UBI Reader: before 0.8.5 — fixed in 0.8.5

How to fix

Upgrade to a fixed version: UBI Reader 0.8.5. Check the vendor advisory for mitigations.

References

• https://github.com/jrspruitt/ubi_reader/pull/57
• https://onekey.com/blog/security-advisory-remote-command-execution-in-binwalk/
• https://github.com/jrspruitt/ubi_reader/pull/57
• https://onekey.com/blog/security-advisory-remote-command-execution-in-binwalk/

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