#VU20540 SQL injection in Booking Calendar - CVE-2018-20556

Vulnerability identifier: #VU20540

Vulnerability risk: Medium

CVSSv4.0: 7.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2018-20556

CWE-ID: CWE-89

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Booking Calendar
Web applications / Modules and components for CMS

Vendor: wpdevelop, oplugins

Description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via the booking_id parameter. A remote authenticated attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Booking Calendar: 8.4.2 - 8.4.5

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External links
https://gist.github.com/B0UG/a750c2c204825453e6faf898ea6d09f6
https://www.exploit-db.com/exploits/46377/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.