#VU6634 Improper Restriction of XML External Entity Reference in Apache FOP - CVE-2017-5661

Vulnerability identifier: #VU6634

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-5661

CWE-ID: CWE-611

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apache FOP
Client/Desktop applications / Multimedia software

Vendor: Apache Foundation

Description
The vulnerability allows a remote attacker to perform an XXE attack.

The vulnerability exists due to insufficient validation of user-supplied data when processing SVG files. A remote attacker can create a specially crafted SVG file, trick the victim into opening it with affected application and gain access to potentially sensitive information.

Successful exploitation of the vulnerability may lead to system compromise.

Mitigation
Update to version 2.2.

Vulnerable software versions

Apache FOP: 1.0 - 2.1

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External links
https://xmlgraphics.apache.org/security.html

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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.