User enumeration leak using switch user functionality in Symfony

2019-12-02T18:09:21
ID GHSA-4VPC-5JX4-CFQG
Type github
Reporter GitHub Advisory Database
Modified 2019-12-02T18:09:21

Description

An issue was discovered in Symfony 4.2.0 to 4.2.11 and 4.3.0 to 4.3.7. The ability to enumerate users was possible due to different handling depending on whether the user existed when making unauthorized attempts to use the switch users functionality. This is related to symfony/security.