CVE-2020-8503 Missing authorization in n/a

Medium 6.5 Published 31 Jan 2020 Updated 4 Aug 2024

An authenticated attacker can access or modify other users' files via insecure direct object references in the file upload feature.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2020-8503?

CVE-2020-8503 is a medium-severity missing authorization vulnerability in n/a, published on 31 Jan 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Biscom Secure File Transfer (SFT) 5.0.1050 through 5.1.1067 and 6.0.1000 through 6.0.1003 allows Insecure Direct Object Reference (IDOR) by an authenticated sender because of an error in a file-upload feature. This is fixed in 5.1.1068 and 6.0.1004.

Weakness: CWE-639

Which versions are affected by CVE-2020-8503?

It affects 1 product.

Products include Biscom Secure File Transfer.

How do I fix CVE-2020-8503?

No fix has been published for CVE-2020-8503 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2020-8503 being exploited?

There is no known exploitation of CVE-2020-8503 in the wild and no public exploit code.

Sources

Also known as GHSA-9p6c-3rgf-xgf4.