CVE-2024-45291: PhpSpreadsheet allows absolute path traversal and Server-Side Request Forgery in HTML writer when embedding images is enabled
(updated )
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.
References
- github.com/PHPOffice/PhpSpreadsheet
- github.com/PHPOffice/PhpSpreadsheet/commit/a9693d1182df6695c14bc5d74315ac71a3398e5a
- github.com/PHPOffice/PhpSpreadsheet/commit/d95bc290beb137d4118095b96f62ec47e0205cec
- github.com/PHPOffice/PhpSpreadsheet/commit/e04ed222b36fd5fd6fed0c10c765c2b68effb465
- github.com/PHPOffice/PhpSpreadsheet/security/advisories/GHSA-w9xv-qf98-ccq4
- github.com/advisories/GHSA-w9xv-qf98-ccq4
- nvd.nist.gov/vuln/detail/CVE-2024-45291
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