CVE-2019-12331

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Summary

CVECVE-2019-12331
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-11-07 15:15:00 UTC
Updated2020-02-10 21:49:00 UTC
DescriptionPHPOffice 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.

Risk And Classification

Problem Types: CWE-611

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Phpspreadsheet Project Phpspreadsheet All All All All
Application Phpspreadsheet Project Phpspreadsheet All All All All

References

ReferenceSourceLinkTags
PhpSpreadsheet/CHANGELOG.md at master · PHPOffice/PhpSpreadsheet · GitHub CONFIRM github.com Third Party Advisory
usd-2019-0046 | usd Herolab MISC herolab.usd.de Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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