TYPO3 contains a flaw that may lead to an unauthorized information disclosure. The issue is triggered when the program returns a different response for incorrect authentication attempts depending on whether or not the username is incorrect, which will disclose valid usernames to a remote attacker.
Classification
Location:
Remote / Network Access
Attack Type:
Information Disclosure
Impact:
Loss of Confidentiality
Solution:
Upgrade
Exploit:
Exploit Private
Disclosure:
Vendor Verified,
Coordinated Disclosure
OSVDB:
Web Related
Solution
Upgrade to version 4.3.12, 4.4.9, or 4.5.4 or higher, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.
