CVE-2019-12331

PHPOffice PhpSpreadsheet before 1.8.0 has an XXE issue. The XmlScanner decodes the sheet1.xml from an .xlsx to utf-8 if something else than UTF-8 is declared in the header. This was a security measurement to prevent CVE-2018-19277 but the fix is not sufficient. By double-encoding the the xml payload to utf-7 it is possible to bypass the check for the string ‚<!ENTITY‘ and thus allowing for an xml external entity processing (XXE) attack.
Configurations

Configuration 1 (hide)

cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*

History

04 Sep 2024, 17:45

Type Values Removed Values Added
First Time Phpoffice
Phpoffice phpspreadsheet
CPE cpe:2.3:a:phpspreadsheet_project:phpspreadsheet:*:*:*:*:*:*:*:* cpe:2.3:a:phpoffice:phpspreadsheet:*:*:*:*:*:*:*:*

Information

Published : 2019-11-07 15:15

Updated : 2024-09-04 17:45


NVD link : CVE-2019-12331

Mitre link : CVE-2019-12331

CVE.ORG link : CVE-2019-12331


JSON object : View

Products Affected

phpoffice

  • phpspreadsheet
CWE
CWE-611

Improper Restriction of XML External Entity Reference