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The Connection Manager in IBM Lotus Mobile Connect (LMC) before 6.1.4, when HTTP Access Services (HTTP-AS) is enabled, does not delete LTPA tokens in response to use of the iNotes Logoff button, which might allow physically proximate attackers to obtain access via an unattended client, related to a cookie domain mismatch.
The Connection Manager in IBM Lotus Mobile Connect (LMC) before 6.1.4, when HTTP Access Services (HTTP-AS) is enabled, does not delete LTPA tokens in response to use of the iNotes Logoff button, which might allow physically proximate attackers to obtain access via an unattended client, related to a cookie domain mismatch.
CVSS 2.0 Base Score 4.4. CVSS Attack Vector: local. CVSS Attack Complexity: medium. CVSS Vector: (AV:L/AC:M/Au:N/C:P/I:P/A:P).
The following code intends to ensure that the user is already logged in. If not, the code performs authentication with the user-provided username and password. If successful, it sets the loggedin and user cookies to "remember" that the user has already logged in. Finally, the code performs administrator tasks if the logged-in user has the "Administrator" username, as recorded in the user cookie.
}
}ExitError("Error: you need to log in first");
););DoAdministratorTasks();Unfortunately, this code can be bypassed. The attacker can set the cookies independently so that the code does not check the username and password. The attacker could do this with an HTTP request containing headers such as:
[body of request]By setting the loggedin cookie to "true", the attacker bypasses the entire authentication check. By using the "Administrator" value in the user cookie, the attacker also gains privileges to administer the software.
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