Vulnerability identifier: #VU57178

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Firefly III
Client/Desktop applications / Other client software

Vendor: James Cole

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload while creating a new bill. A remote attacker can upload a malicious file and execute it on the server.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Firefly III: 5.0.0 - 5.6.1

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External links
http://github.com/firefly-iii/firefly-iii/releases/tag/5.6.2
http://huntr.dev/bounties/5267ec1c-d204-40d2-bd4f-6c2dd495ee18/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.