PHPOffice PhpSpreadsheet up to 1.29.1/2.1.0 XLSX File absolute path traversal

Summaryinfo

A vulnerability labeled as problematic has been found in PHPOffice PhpSpreadsheet up to 1.29.1/2.1.0. Affected is an unknown function of the component XLSX File Handler. Executing a manipulation can lead to absolute path traversal. This vulnerability is registered as CVE-2024-45290. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in PHPOffice PhpSpreadsheet up to 1.29.1/2.1.0. It has been declared as problematic. This vulnerability affects an unknown part of the component XLSX File Handler. The manipulation with an unknown input leads to a absolute path traversal vulnerability. The CWE definition for the vulnerability is CWE-36. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize absolute path sequences such as "/abs/path" that can resolve to a location that is outside of that directory. As an impact it is known to affect confidentiality. CVE summarizes:

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. It's possible for an attacker to construct an XLSX file which links media from external URLs. When opening the XLSX file, PhpSpreadsheet retrieves the image size and type by reading the file contents, if the provided path is a URL. By using specially crafted `php://filter` URLs an attacker can leak the contents of any file or URL. Note that this vulnerability is different from GHSA-w9xv-qf98-ccq4, and resides in a different component. An attacker can access any file on the server, or leak information form arbitrary URLs, potentially exposing sensitive information such as AWS IAM credentials. This issue has been addressed in release versions 1.29.2, 2.1.1, and 2.3.0. All users are advised to upgrade. There are no known workarounds for this vulnerability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2024-45290 since 08/26/2024. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1006.

Upgrading to version 1.29.2, 2.1.1 or 2.3.0 eliminates this vulnerability.

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Productinfo

Vendor

• PHPOffice

Name

• PhpSpreadsheet

Version

• 1.29.0
• 1.29.1
• 2.0
• 2.1.0

Website

• Product: https://github.com/PHPOffice/PhpSpreadsheet/

CPE 2.3info

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CPE 2.2info

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