2020-25445 | Ultimate Booking System Booking Core Subscribe csv injection

By Max On Jul 18, 2021

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6.6	$0-$5k	0.68

A vulnerability was found in Ultimate Booking System Booking Core 1.7.0. It has been declared as critical. Affected by this vulnerability is an unknown code of the component Subscribe. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-269. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The “Subscribe” feature in Ultimate Booking System Booking Core 1.7.0 is vulnerable to CSV formula injection. The input containing the excel formula is not being sanitized by the application. As a result when admin in backend download and open the csv, content of the cells are executed.

The weakness was presented 07/15/2021. The advisory is shared at medium.com. This vulnerability is known as CVE-2020-25445 since 09/14/2020. The attack needs to be initiated within the local network. A single authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/18/2021).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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