CVE-2014-3402 - Improper Authentication

Severity

50%

Complexity

99%

Confidentiality

48%

The authentication-manager process in the web framework in Cisco Intrusion Prevention System (IPS) 7.0(8)E4 and earlier in Cisco Intrusion Detection System (IDS) does not properly manage user tokens, which allows remote attackers to cause a denial of service (temporary MainApp hang) via a crafted connection request to the management interface, aka Bug ID CSCuq39550.

The authentication-manager process in the web framework in Cisco Intrusion Prevention System (IPS) 7.0(8)E4 and earlier in Cisco Intrusion Detection System (IDS) does not properly manage user tokens, which allows remote attackers to cause a denial of service (temporary MainApp hang) via a crafted connection request to the management interface, aka Bug ID CSCuq39550.

CVSS 2.0 Base Score 5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P).

Demo Examples

Improper Authentication

CWE-287

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.

Improper Authentication

CWE-287

Overview

First reported 10 years ago

2014-10-10 10:55:00

Last updated 10 years ago

2014-10-15 13:05:00

Affected Software

Cisco Intrusion Prevention System 7.0

7.0

Cisco Intrusion Prevention System 7.0(1)E3

7.0\(1\)e3

Cisco Intrusion Prevention System 7.0(2)E3

7.0\(2\)e3

Cisco Intrusion Prevention System 7.0(2)E4

7.0\(2\)e4

Cisco Intrusion Prevention System 7.0(3)E4

7.0\(3\)e4

Cisco Intrusion Prevention System 7.0(4)E4

7.0\(4\)e4

Cisco Intrusion Prevention System 7.0(5a)E4

7.0\(5a\)e4

Cisco Intrusion Prevention System 7.0(6)E4

7.0\(6\)e4

Cisco Intrusion Prevention System 7.0(7)E4

7.0\(7\)e4

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