A vulnerability, which was classified as critical, has been found in Unitrends Backup up to 10.0.x (Backup Software). This issue affects some unknown functionality of the file /api/hosts of the component User Interface. The manipulation as part of a Parameter leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

It was discovered that the Unitrends Backup (UB) before 10.1.0 user interface was exposed to an authentication bypass, which then could allow an unauthenticated user to inject arbitrary commands into its /api/hosts parameters using backquotes.

The bug was discovered 02/06/2018. The weakness was shared 03/14/2018 (Website). It is possible to read the advisory at support.unitrends.com. The identification of this vulnerability is CVE-2018-6328 since 01/26/2018. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 36 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 10.1.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (44297). The entry 114600 is related to this item.

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Type

• Backup Software

Vendor

• Unitrends

Name

• Backup

Version

• 10.0

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CPE 2.2info

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• 🔍

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