phpRechnung contains a flaw related to the 'CheckUser()', 'CheckAdmin()', and 'CheckAdminGroup2()' (and possibly other) functions in include/phprechnung.inc.php nfailing to properly restrict access to users or administrators. This may allow a remote attacker to bypass authentication.
Classification
Location:
Remote / Network Access
Attack Type:
Authentication Management
Impact:
Loss of Integrity
Solution:
Upgrade
Exploit:
Exploit Unknown
Disclosure:
Vendor Verified,
Coordinated Disclosure
OSVDB:
Web Related
Solution
Upgrade to version 1.6.1 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.