ubi-reader up to 0.8.4 UBIFS File ubireader_extract_files path traversal

Summaryinfo

A vulnerability labeled as critical has been found in ubi-reader up to 0.8.4. This vulnerability affects the function ubireader_extract_files of the component UBIFS File Handler. Executing a manipulation can lead to path traversal. This vulnerability appears as CVE-2023-0591. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in ubi-reader up to 0.8.4 and classified as critical. This vulnerability affects the function ubireader_extract_files of the component UBIFS File Handler. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The weakness was presented 01/31/2023. The advisory is available at onekey.com. This vulnerability was named CVE-2023-0591 since 01/31/2023. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 0.8.5 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• ubi-reader

Version

• 0.8.0
• 0.8.1
• 0.8.2
• 0.8.3
• 0.8.4

CPE 2.3info

• 🔍
• 🔍
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CPE 2.2info

• 🔍
• 🔍
• 🔍

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