Junos RADIUS Uninteded Authentication Vulnerability

Published: 2014-11-20 04:16:44
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Detection Type:
Linux Distribution Package

Solution Type:
Vendor Patch

Summary:
JunOS is prone to a security bypass vulnerability

Impact:
The vulnerability can cause authentication requests to be sent to the RADIUS authentication server which may allow for unintended successful authentication.

Technical Details:
When a RADIUS authentication server is configured under [system radius-server], an entry is created in /var/etc/pam_radius.conf. An issue was discovered where RADIUS accounting servers configured under [system accounting destination radius] are also propagated to pam_radius.conf. If the same RADIUS server is used for both authentication and accounting - a common configuration - the issue is less severe since RADIUS authentication is sent to the intended server despite the duplicate entries. However, if the RADIUS authentication server is later removed from the configuration, the duplicate entry created by configuration of the RADIUS accounting server will remain in pam_radius.conf, also leading to possible unintended authentication success.

Detection Method:
Checks if a vulnerable OS build is present on the target host.

Recommendations:
New builds of Junos OS software are available from Juniper.

Affected Versions:
Junos OS 11.4, 12.1, 12.2, 12.3, 13.1, 13.2 and 13.3

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2014-6379

References:

http://kb.juniper.net/JSA10654
http://www.securityfocus.com/bid/70365

Severity
High
CVSS Score
7.5
Published
2014-11-20
Modified
2018-10-25
Category
JunOS Local Security Checks

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