GHSA-pjx8-984p-7p3x
FOSUserBundle Entropy is lost in the TokenGenerator
Quick fix
GHSA-pjx8-984p-7p3x — friendsofsymfony/user-bundle: upgrade to the fixed version with the command below.
composer require friendsofsymfony/user-bundle:^1.3.5Details
### Description Because of the usage of base_convert which looses precision for large inputs, the entropy of tokens generated by FOSUserBundle for the email confirmation and password resetting is lost. This makes these tokens much less random than they are expected to be, and so not cryptographically safe.
### Resolution The token generation logic used in the 2.0.x branch based on base64 encoding has been backported. This changes the range of characters used in the token. Any route placeholder expected to match a token generated by FOSUserBundle must be updated to allow dashes, which are not allowed by \w in regexes. A \w+ requirement should so become [\w\-]+.
Are you affected?
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Affected packages
1.0.0Fixed in: 1.3.5composer require friendsofsymfony/user-bundle:^1.3.5References
- https://github.com/FriendsOfSymfony/FOSUserBundle/commit/b3ebfea52065e9727508f5f8e6c9f7459a1b06d8[WEB]
- https://github.com/FriendsOfPHP/security-advisories/blob/master/friendsofsymfony/user-bundle/2014-09-04-1.yaml[WEB]
- https://github.com/FriendsOfSymfony/FOSUserBundle[PACKAGE]
- https://symfony.com/blog/fosuserbundle-entropy-of-generated-tokens-is-lost[WEB]