WordPress Ajax BootModal Login 1.4.3 CAPTCHA Issue

WordPress Ajax BootModal Login plugin version 1.4.3 suffers from a CAPTCHA bypass vulnerability.

MD5 | b22482cb09d399984f08cbf8bc094508

Component: Ajax BootModal Login (Wordpress plugin)
Vulnerable version: 1.4.3 and possibly prior
CVE-ID: CVE-2018-15876
- LydA(c)ric Lefebvre (https://www.linkedin.com/in/lydericlefebvre)
- Fabien Haureils (https://www.linkedin.com/in/fabien-haureils/)

- 2018/08/25: Vulnerability found
- 2018/08/25: Advisory published on GitHub
- 2018/08/25: CVE-ID request
- 2018/08/26: Reported to developer on GitHub
- 2018/09/01: No response from developer
- 2018/09/01: Advisory sent to bugtraq mailing list

Register form, login form and password recovery form need CAPTCHA
solving to perform actions. However, these CAPTCHAs seem to be valid
as long as the user session is valid. One could send as many requests
as one wished by automatisation. This allows an attacker to spam large
number of mail addresses, and brute-force credentials.


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