CVE-2021-29251 Missing authorization in n/a

Medium 6.5 Published Updated

Attackers can bypass registration restrictions in BTCPay Server when mail servers are configured, potentially gaining unauthorized access.

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-2021-29251?

CVE-2021-29251 is a medium-severity missing authorization vulnerability in n/a, published on 1 Apr 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

BTCPay Server before 1.0.7.1 mishandles the policy setting in which users can register (in Server Settings > Policies). This affects Docker use cases in which a mail server is configured.

Which versions are affected by CVE-2021-29251?

It affects 1 product.

Products include Btcpayserver Btcpay Server.

How do I fix CVE-2021-29251?

No fix has been published for CVE-2021-29251 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-2021-29251 being exploited?

There is no known exploitation of CVE-2021-29251 in the wild and no public exploit code.

Sources

Also known as GHSA-8qq9-8h7f-8qvp.

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