CVE-2016-6377 - Improper Authentication

Severity

68%

Complexity

86%

Confidentiality

106%

Media Origination System Suite Software 2.6 and earlier in Cisco Virtual Media Packager (VMP) allows remote attackers to bypass authentication and make arbitrary Platform and Applications Manager (PAM) API calls via unspecified vectors, aka Bug ID CSCuz52110.

Media Origination System Suite Software 2.6 and earlier in Cisco Virtual Media Packager (VMP) allows remote attackers to bypass authentication and make arbitrary Platform and Applications Manager (PAM) API calls via unspecified vectors, aka Bug ID CSCuz52110.

CVSS 3.0 Base Score 8.1. CVSS Attack Vector: network. CVSS Attack Complexity: high. CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 6.8. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/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

Type

Cisco Media Origination System Suite

First reported 8 years ago

2016-09-03 20:59:00

Last updated 8 years ago

2016-11-28 20:31:00

Affected Software

Cisco Media Origination System Suite 2.3(1)

2.3\(1\)

Cisco Media Origination System Suite 2.3(2)

2.3\(2\)

Cisco Media Origination System Suite 2.3(6)

2.3\(6\)

Cisco Media Origination System Suite 2.3(7)

2.3\(7\)

Cisco Media Origination System Suite 2.3(8)

2.3\(8\)

Cisco Media Origination System Suite 2.3 Base

2.3_base

Cisco Media Origination System Suite 2.4(1)

2.4\(1\)

Cisco Media Origination System Suite 2.4 Base

2.4_base

Cisco Media Origination System Suite 2.5(0)

2.5\(0\)

Cisco Media Origination System Suite 2.5(1)

2.5\(1\)

Cisco Media Origination System Suite 2.5 Base

2.5_base

Cisco Media Origination System Suite 2.6 Base

2.6_base

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