Reusability of CAPTCHA Answer in Liferay Portal 7.3.4, 7.3.5, and Liferay DXP 7.3 before Fix Pack 1

Reusability of CAPTCHA Answer in Liferay Portal 7.3.4, 7.3.5, and Liferay DXP 7.3 before Fix Pack 1

CVE-2021-29047 · HIGH Severity

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

The SimpleCaptcha implementation in Liferay Portal 7.3.4, 7.3.5 and Liferay DXP 7.3 before fix pack 1 does not invalidate CAPTCHA answers after it is used, which allows remote attackers to repeatedly perform actions protected by a CAPTCHA challenge by reusing the same CAPTCHA answer.

Learn more about our Web Application Penetration Testing UK.