#VU58383 XML External Entity injection in FileMaker Pro and FileMaker Server - CVE-2021-44147

Vulnerability identifier: #VU58383

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-44147

CWE-ID: CWE-611

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
FileMaker Pro
Server applications / Other server solutions
FileMaker Server
Server applications / Other server solutions

Vendor: Claris International Inc

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input in the "Import Records" function. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

FileMaker Pro: before 19.4.1

FileMaker Server: before 19.4.1

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External links
https://support.claris.com/s/answerview?anum=000035751
https://davidhamann.de/2021/11/18/filemaker-xxe-vulnerability/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.