CVE-2014-6379 - Improper Authentication

Severity

75%

Complexity

99%

Confidentiality

106%

Juniper Junos 11.4 before R12, 12.1 before R10, 12.1X44 before D35, 12.1X45 before D25, 12.1X46 before D20, 12.1X47 before D10, 12.2 before R8, 12.2X50 before D70, 12.3 before R6, 13.1 before R4-S3, 13.1X49 before D55, 13.1X50 before D30, 13.2 before R4, 13.2X50 before D20, 13.2X51 before D26 and D30, 13.2X52 before D15, 13.3 before R2, and 14.1 before R1, when a RADIUS accounting server is configured as [system accounting destination radius], creates an entry in /var/etc/pam_radius.conf, which might allow remote attackers to bypass authentication via unspecified vectors.

Juniper Junos 11.4 before R12, 12.1 before R10, 12.1X44 before D35, 12.1X45 before D25, 12.1X46 before D20, 12.1X47 before D10, 12.2 before R8, 12.2X50 before D70, 12.3 before R6, 13.1 before R4-S3, 13.1X49 before D55, 13.1X50 before D30, 13.2 before R4, 13.2X50 before D20, 13.2X51 before D26 and D30, 13.2X52 before D15, 13.3 before R2, and 14.1 before R1, when a RADIUS accounting server is configured as [system accounting destination radius], creates an entry in /var/etc/pam_radius.conf, which might allow remote attackers to bypass authentication via unspecified vectors.

CVSS 2.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/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

Juniper JUNOS

First reported 10 years ago

2014-10-14 14:55:00

Last updated 7 years ago

2017-09-08 01:29:00

Affected Software

Juniper JUNOS 11.4

11.4

Juniper JUNOS 12.1

12.1

Juniper JUNOS 12.1R

12.1r

Juniper JUNOS 12.1X44

12.1x44

Juniper JUNOS 12.1X45

12.1x45

Juniper JUNOS 12.1X46

12.1x46

Juniper JUNOS 12.1X47

12.1x47

Juniper JUNOS 12.2

12.2

Juniper JUNOS 12.3

12.3

Juniper JUNOS 12.3R7

12.3

Juniper JUNOS 13.1

13.1

Juniper JUNOS 13.1R4-S2

13.1

Juniper JUNOS 13.2

13.2

Juniper JUNOS 13.3

13.3

Juniper JUNOS 14.1

14.1

References

70365

1031010

juniper-junos-cve20146379-sec-bypass(96905)

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10654

Vendor Advisory

Stay updated

ExploitPedia is constantly evolving. Sign up to receive a notification when we release additional functionality.

Get in touch

If you'd like to report a bug or have any suggestions for improvements then please do get in touch with us using this form. We will get back to you as soon as we can.