CVE-2009-3862 - Improper Authentication

Severity

50%

Complexity

99%

Confidentiality

48%

Per: http://www.novell.com/support/viewContent.do?externalId=7004721 "Resolution This vulnerability is resolved in eDirectory 8.8.5 ftf1 and eDirectory 8.7.3.10 ftf2. To resolve this problem, apply eDirectory 8.8.5 ftf1 or newer for eDirectory 8.8.X and eDirectory 8.7.3.10 ftf2 for eDirectory 8.7.3.X. Patches are available at http://download.novell.com"

The NDSD process in Novell eDirectory 8.7.3 before 8.7.3.10 ftf2 and eDirectory 8.8 before 8.8.5 ftf1 does not properly handle certain LDAP search requests, which allows remote attackers to cause a denial of service (application hang) via a search request with a NULL BaseDN value.

Per: http://www.novell.com/support/viewContent.do?externalId=7004721 "Resolution This vulnerability is resolved in eDirectory 8.8.5 ftf1 and eDirectory 8.7.3.10 ftf2. To resolve this problem, apply eDirectory 8.8.5 ftf1 or newer for eDirectory 8.8.X and eDirectory 8.7.3.10 ftf2 for eDirectory 8.7.3.X. Patches are available at http://download.novell.com"

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

Type

Novell eDirectory

First reported 15 years ago

2009-11-04 18:30:00

Last updated 15 years ago

2009-11-05 05:00:00

Affected Software

Novell eDirectory 8.7.3

8.7.3

Novell eDirectory 8.7.3 SP2 for Windows

8.7.3

Novell eDirectory 8.7.3 SP3 for Windows

8.7.3

Novell eDirectory 8.7.3 SP4 for Windows

8.7.3

Novell eDirectory 8.7.3 SP5 for Windows

8.7.3

Novell eDirectory 8.7.3 SP6 for Windows

8.7.3

Novell eDirectory 8.7.3 SP7 for Windows

8.7.3

Novell eDirectory 8.7.3 SP8 for Windows

8.7.3

Novell eDirectory 8.7.3 SP9 for Windows

8.7.3

Novell eDirectory 8.7.3.8

8.7.3.8

Novell eDirectory 8.8

8.8

Novell eDirectory 8.8.1

8.8.1

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