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CVE-2024-47873

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CVE-2024-47873

Published: Nov 18, 2024

Modified: Nov 18, 2024

PUBLISHED

CVSS v3.1

7.5

HIGH

Description

PhpSpreadsheet is a PHP library for reading and writing spreadsheet files. The XmlScanner class has a scan method which should prevent XXE attacks. However, prior to versions 1.9.4, 2.1.3, 2.3.2, and 3.4.0, the regexes used in the `scan` method and the findCharSet method can be bypassed by using UCS-4 and encoding guessing. An attacker can bypass the sanitizer and achieve an XML external entity attack. Versions 1.9.4, 2.1.3, 2.3.2, and 3.4.0 fix the issue.

VendorProductVersions

PHPOffice

PhpSpreadsheet

affected
< 1.29.4
affected
>= 2.0.0, < 2.1.3
affected
>= 2.2.0, < 2.3.2
affected
>= 3.3.0, < 3.4.0

Weaknesses (CWE)

CWE-611

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

References

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