CVE-2024-42456 Missing authorization in Backup & Replication

High 8.8 Published 4 Dec 2024 Updated 4 Dec 2024

Low-privileged users can modify critical authentication settings to gain unauthorized access and execute privileged operations in Veeam Backup & Replication.

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-2024-42456?

CVE-2024-42456 is a high-severity missing authorization vulnerability in Veeam Backup & Replication, published on 4 Dec 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in Veeam Backup & Replication platform allows a low-privileged user with a specific role to exploit a method that updates critical configuration settings, such as modifying the trusted client certificate used for authentication on a specific port. This can result in unauthorized access, enabling the user to call privileged methods and initiate critical services. The issue arises due to insufficient permission requirements on the method, allowing users with low privileges to perform actions that should require higher-level permissions.

Weakness: CWE-306

Which versions are affected by CVE-2024-42456?

It affects 1 product.

Products include Veeam Veeam Backup \& Replication.

How do I fix CVE-2024-42456?

No fix has been published for CVE-2024-42456 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-2024-42456 being exploited?

There is no known exploitation of CVE-2024-42456 in the wild and no public exploit code.

Sources

Also known as GHSA-hf2h-mjwg-v9r7.