Description
PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. Prior to 1.30.4, 2.1.16, 2.4.5, 3.10.5, and 5.7.0, the SpreadsheetML XML reader (Reader\Xml) does not validate the ss:Index row attribute against the maximum allowed row count (AddressRange::MAX_ROW = 1,048,576). An attacker can craft a SpreadsheetML XML file with ss:Index="999999999" on a <Row> element, which inflates the internal cachedHighestRow to ~1 billion. Any subsequent call to getRowIterator() without an explicit end row will attempt to iterate ~1 billion rows, causing CPU exhaustion and denial of service. This vulnerability is fixed in 1.30.4, 2.1.16, 2.4.5, 3.10.5, and 5.7.0.
Problem types
CWE-770: Allocation of Resources Without Limits or Throttling
Product status
>= 2.0.0, < 2.1.16
>= 2.2.0, < 2.4.5
>= 3.3.0, < 3.10.5
>= 4.0.0, < 5.7.0
References
github.com/...dsheet/security/advisories/GHSA-84wq-86v6-x5j6
github.com/...dsheet/security/advisories/GHSA-84wq-86v6-x5j6