User enumeration leak using switch user functionality in Symfony

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...

UBUNTU-CVE-2019-18886

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...

CVE-2003-1524

PGPi PGPDisk 6.0.2i does not unmount a PGP partition when the switch user function in Windows XP is used, which could allow local users to access data on another user's PGP partition...

CVE-2019-18886: Prevent user enumeration using switch user functionality

More info at https://symfony.com/cve-2019-18886...