CVE-2019-12331: XEE
First published: Mon Jul 01 2019(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/phpoffice/phpspreadsheet | <1.8.0 | |
| Phpspreadsheet Project Phpspreadsheet | <1.8.0 | |
| composer/phpoffice/phpspreadsheet | <1.8.0 | 1.8.0 |
| PHPOffice PhpSpreadsheet | <1.8.0 | |
| <1.8.0 |
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Reference Links
- https://github.com/PHPOffice/PhpSpreadsheet/pull/1041
- https://github.com/PHPOffice/PhpSpreadsheet/blob/master/CHANGELOG.md#180---2019-07-01
- https://herolab.usd.de/security-advisories/usd-2019-0046/
- https://nvd.nist.gov/vuln/detail/CVE-2019-12331
- https://github.com/PHPOffice/PhpSpreadsheet/releases/tag/1.8.0
- https://github.com/PHPOffice/PhpSpreadsheet/commit/0e6238c69e863b58aeece61e48ea032696c6dccd
- https://github.com/FriendsOfPHP/security-advisories/blob/master/phpoffice/phpspreadsheet/CVE-2019-12331.yaml
- https://github.com/advisories/GHSA-vvwv-h69m-wg6f (Advisory)
- https://herolab.usd.de/security-advisories/usd-2019-0046
Frequently Asked Questions
What is CVE-2019-12331?
CVE-2019-12331 is an XXE vulnerability in PHPOffice PhpSpreadsheet before version 1.8.0.
How severe is CVE-2019-12331?
CVE-2019-12331 has a severity rating of 8.8 (High).
What is affected by CVE-2019-12331?
PHPOffice PhpSpreadsheet versions before 1.8.0 are affected by CVE-2019-12331.
How can CVE-2019-12331 be fixed?
To fix CVE-2019-12331, update PHPOffice PhpSpreadsheet to version 1.8.0 or later.
Where can I find more information about CVE-2019-12331?
More information about CVE-2019-12331 can be found at the following references: [GitHub Pull Request](https://github.com/PHPOffice/PhpSpreadsheet/pull/1041), [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-12331), [CHANGELOG.md](https://github.com/PHPOffice/PhpSpreadsheet/blob/master/CHANGELOG.md#180---2019-07-01).
- collector/friends-of-php
- collector/nvd-index
- agent/type
- agent/first-publish-date
- agent/severity
- agent/weakness
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- collector/mitre-cve
- source/MITRE
- agent/author
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- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-vvwv-h69m-wg6f
- alias/CVE-2019-12331
- agent/references
- agent/last-modified-date
- agent/tags
- agent/softwarecombine
- agent/event
- collector/nvd-cve
- collector/github-advisory
- agent/trending
- package-manager/composer
- vendor/phpspreadsheet project
- canonical/phpspreadsheet project phpspreadsheet
- vendor/phpoffice
- canonical/phpoffice phpspreadsheet