Description
Mojolicious::Plugin::CaptchaPNG version 1.05 for Perl uses a weak random number source for generating the captcha.
That version uses the built-in rand() function for generating the captcha text as well as image noise, which is insecure.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| GRYPHON | Mojolicious::Plugin::CaptchaPNG | 1.05 | — |
References
- https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.04/diff/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.05/lib/Mojolicious/Plugin/CaptchaPNG.pm
- https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.06/changes
- https://metacpan.org/pod/perlfunc#rand
- https://security.metacpan.org/docs/guides/random-data-for-security.html