CVE-2024-45048: phpspreadsheet XXE — Exploit & Fix

Description

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Affected versions are subject to a bypassing of a filter which allows for an XXE-attack. This in turn allows attacker to obtain contents of local files, even if error reporting is muted. This vulnerability has been addressed in release version 2.2.1. All users are advised to upgrade. There are no known workarounds for this vulnerability.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-611 CWE-611

Affected Products

Vendor	Product	Versions
phpoffice	phpspreadsheet	< 1.29.1
phpoffice	phpspreadsheet	2.0.0 — 2.2.1

References

Advisories & Patches

https://github.com/PHPOffice/PhpSpreadsheet/commit/bea2d4b30f24bcc8a7712e208d1359e603b45dda

Exploits

https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-ghg6-32f9-2jp7

Frequently Asked Questions

What is CVE-2024-45048? +

PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Affected versions are subject to a bypassing of a filter which allows for an XXE-attack. This in turn allows attacker to obtain contents of local files, even if error reporting is muted. This vulnerability has been addressed in release version 2.2.1. All users are advised to upgrade. There are no known workarounds for this vulnerability. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2024-45048? +

CVE-2024-45048 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-45048? +

CVE-2024-45048 affects products from phpoffice, specifically: phpspreadsheet. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-45048? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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