Vulnerability · Published Oct 7, 2024 · Assigned by GitHub_M
CVE-2024-45291Path traversal and Server-Side Request Forgery in HTML writer when embedding images is enabled in PHPSpreadsheet
Medium 6.3
In plain English
A medium-severity server-side request forgery in PhpSpreadsheet from PHPOffice. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
PHPSpreadsheet is a pure PHP library for reading and writing spreadsheet files. It's possible for an attacker to construct an XLSX file that links images from arbitrary paths. When embedding images has been enabled in HTML writer with `$writer->setEmbedImages(true);` those files will be included in the output as `data:` URLs, regardless of the file's type. Also URLs can be used for embedding, resulting in a Server-Side Request Forgery vulnerability. When embedding images has been enabled, an attacker can read arbitrary files on the server and perform arbitrary HTTP GET requests. Note that any PHP protocol wrappers can be used, meaning that if for example the `expect://` wrapper is enabled, also remote code execution is possible. 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | phpoffice/phpexcel | no fix listed | GHSA-w9xv-qf98-ccq4 |
| Packagist | phpoffice/phpspreadsheet | 2.3.0 | GHSA-w9xv-qf98-ccq4 |
| Packagist | phpoffice/phpspreadsheet | 1.29.2 | GHSA-w9xv-qf98-ccq4 |
| Packagist | phpoffice/phpspreadsheet | 2.1.1 | GHSA-w9xv-qf98-ccq4 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| PHPOffice | PhpSpreadsheet | < 1.29.2>= 2.0.0, < 2.1.1>= 2.2.0, < 2.3.0 |
Weakness: CWE-36, CWE-918 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N