CVE-2019-12331 - Xxe

Routine

Remediate Within 6 Months

CVE Information|Basic Analysis|Framework Mapping|Web Framework Mapping|Compliance

CVE Information

Original CVE data

Published: November 7, 2019

Updated: September 4, 2024

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.

CWE: CWE-611

CVSS v26.8

AV:N/AC:M/AU:N/C:P/I:P/A:P

CVSS v38.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

https://herolab.usd.de/security-advisories/usd-2019-0046/

https://github.com/PHPOffice/PhpSpreadsheet/blob/master/CHANGELOG.md

Affected Vendors

Phpoffice - (1)

More vulnerabilities from Phpoffice

Basic Analysis

Common vulnerability metrics

Vulnerabilty type as detected by PRIOⁿengine

Xxe

CVSS Scores as calculated by PRIOⁿengine

CVSS v27.5

AV:N/AC:L/AU:N/C:P/I:P/A:P

CVSS v39.8

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

MITRE CWE Top 25

Vulnerability weakness type is in the top 25 CWEs according to MITRE. View Mitre Top 25 CWEs

Exploits

No exploit code is reported to exist.

Active Exploitation

Vulnerability is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. See the KEV Catalog

Social Network Activity

Threat Actor Activity

No sightings of the vulnerability within threat reports.

Cybersecurity Frameworks

How the vulnerability maps against various cybersecurity frameworks

T1565 - Data Manipulation

T1552 - Unsecured Credentials

T1485 - Data Destruction

T1201 - Password Policy Discovery

T1190 - Exploit Public-Facing Application

T1119 - Automated Collection

T1083 - File and Directory Discovery

T1078 - Valid Accounts

T1059 - Command and Scripting Interpreter

T1020 - Automated Exfiltration

T1005 - Data from Local System

Compliance Impact

How the submited vulnerability affects compliance

PCI DSS v3.2.1-6.5.8 - Improper Access Control

Web Application Security Frameworks

Applicable if the issue likely affects a web application

WASC-43 - XML External Entities