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vulnerability CVE-2015-1169

Jasig CAS Server: bypassing LDAP authentication via Wildcard

Synthesis of the vulnerability

An attacker can use the wildcard character on Jasig CAS Server, in order to ease a brute force attack on the LDAP directory.
Vulnerable products: CAS Server.
Severity of this weakness: 2/4.
Consequences of an attack: user access/rights.
Hacker's origin: intranet client.
Creation date: 21/01/2015.
Références of this bulletin: CVE-2015-1169, VIGILANCE-VUL-16020.

Description of the vulnerability

The Jasig CAS Server product uses a LDAP directory to store login/password of users.

However, if user "laurent" exists, an attacker can only enter "la*" with his valid password, to authenticate on the account.

An attacker can therefore use the wildcard character on Jasig CAS Server, in order to ease a brute force attack on the LDAP directory.
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