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Failed Password Change (SUSE Linux Enterprise Server 10)

Microsoft.ACS.Linux.SLES.10.Password.Change.Failed (Rule)

Rule to collect events for failed password change

Knowledge Base article:

Summary

An unsuccessful password change operation has been detected in the system log files.

Causes

A password was unsuccessfully changed on the system. This monitor allows system administrators to track password changes.

Resolutions

The description of the alert and/or the output data item contains information on the event encountered. If the activity appears suspicious, please check the associated event details and any other events that happened around the time of this event.

Element properties:

TargetMicrosoft.ACS.Linux.SLES.10.ACSEndPoint
CategoryEventCollection
EnabledTrue
Alert GenerateFalse
RemotableTrue

Member Modules:

ID Module Type TypeId RunAs 
EventDS DataSource Microsoft.Unix.SCXLog.Privileged.Datasource Default
WA WriteAction Microsoft.ACS.Unix.SecureEventLogWriter Default

Source Code:

<Rule ID="Microsoft.ACS.Linux.SLES.10.Password.Change.Failed" Enabled="true" Target="Microsoft.ACS.Linux.SLES.10.ACSEndPoint" Remotable="true">

  <Category>EventCollection</Category>

  <DataSources>

    <DataSource ID="EventDS" TypeID="Unix!Microsoft.Unix.SCXLog.Privileged.Datasource">

      <Host>$Target/Host/Property[Type="Unix!Microsoft.Unix.Computer"]/NetworkName$</Host>

      <LogFile>/var/log/messages</LogFile>

      <!-- [TYPE] SUSE Password False -->

      <!-- [INPUT] Oct 19 13:57:26 scxcore-suse01 passwd[20399]: User jeffcof: Authentication failure-->

      <!-- [EXPECTED] date="Oct 19 13:57:26"; hostname="scxcore-suse01"; process="passwd"; processId="20399"; clientUser="jeffcof" -->

      <RegExpFilter>\s+passwd\[[[:digit:]]+\]: User \S+: Authentication failure</RegExpFilter>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="WA" TypeID="ACS.Unix!Microsoft.ACS.Unix.SecureEventLogWriter">

      <RegExp>(?'date'\S+\s+\d+\s+\d+:\d+:\d+)\s+(?:\S+:)?(?'hostname'\S+)\s+(?'process'passwd)\[(?'processId'\d+)\]: User (?'clientUser'\S+): Authentication failure</RegExp>

      <EventType>0</EventType>

      <EventId>27003</EventId>

      <BackrefOverrides>sessionName="Password not changed"</BackrefOverrides>

    </WriteAction>

  </WriteActions>

</Rule>