A vulnerability, which was classified as critical, was found in TeamWork Photo Fusion (version now known). This affects the function changeAvatar/changeCover. The manipulation with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

TeamWork Photo Fusion allows Arbitrary File Upload in changeAvatar and changeCover.

The bug was discovered 09/26/2017. The weakness was released 09/28/2017 as EDB-ID 42797 as not defined exploit (Exploit-DB). It is possible to read the advisory at exploit-db.com. This vulnerability is uniquely identified as CVE-2017-14839 since 09/27/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. Required for exploitation is a authentication. Technical details and a public exploit are known. The attack technique deployed by this issue is T1608.002 according to MITRE ATT&CK.

After immediately, there has been an exploit disclosed. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (42797).

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• TeamWork

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• Photo Fusion

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