Free Radius : Auth: (0) Invalid user (Rejected: User-Name contains multiple ..s): [xxx]

September 27, 2020 at 11:34 am Leave a comment

Recently we performed a Yum update on our Free Radius Server. The newer version is FreeRADIUS Version 3.0.13. At that time , we started receiving complains from the users that they are not able to login to the network devices.

After reviewing the logs , we noticed the error “Auth: (0) Invalid user (Rejected: User-Name contains multiple ..s)” being logged during the authentication. This is due to the changes applied in the filter file(/etc/raddb/policy.d/filter ).

Before Update:

if (&User-Name =~ /\\.\\./ ) {

After Update:

if (&User-Name =~ /\.\./ ) {

The new Regex syntax style doesn’t escape backslashes anymore. So you need to ensure that the correct_escapes = true property is set in /etc/raddb/radiusd.conf.

Source:https://access.redhat.com/solutions/3241961

Entry filed under: Linux. Tags: , , .

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