Finding Veeam Backup & Replication instances

Veeam recently published information on two vulnerabilities in the Veeam Backup & Replication product, originally reported by Nikita Petrov of Positive Technologies.

As of December 16th, CISA has announced the addition of two critical vulnerabilities (tracked as CVE-2022-26500 and CVE-2022-26501) to the KEV catalog. These CVEs are actively being exploited, putting systems at risk. It is critical that these systems are updated to patch these vulnerabilities as soon as possible.

Which versions are affected?

These vulnerabilities affect Backup & Replication versions 9.5, 10, and 11, allowing for exploitation by attackers to achieve unauthenticated remote code execution via the Veeam Distribution Service API. Details on the vulnerabilities (identified as CVE-2022-26500 and CVE-2022-26501) have not been published at the time of writing, though Veeam has assigned a “critical” CVSS score of 9.8.

Is an update available?

Patched releases of Veeam Backup & Replication have been made available (see the “Solution” section). Guidance from Veeam is for administrators to update to these newer versions as soon as possible. If near-term updating is not possible, Veeam offers a temporary mitigation strategy via stopping-and-disabling the Veeam Distribution Service (see the “Solution->Notes” section).

How do I find potentially vulnerable Veeam instances with runZero?

We recently added the default port (9380) for the Veeam Distribution Service API to our runZero Explorer and Scanner. If you are using Explorer or Scanner v2.11.5 or later, you just need to ensure you have performed a recent scan of your assets prior to running the query below. If you are using an older Explorer or Scanner, you can add port 9380 to the “Included TCP ports” (under the Advanced tab) and then run a scan to gather the necessary data.

From the Asset Inventory, use the following pre-built query to locate Veeam Distribution Service instances within your network that could also potentially be running vulnerable versions of Veeam Backup & Replication:

tcp_port:9380

As always, any prebuilt queries we create are available from our Queries Library. Check out the library for other useful inventory queries.

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