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根 PAM SSH 身份验证警报规则

Microsoft.Linux.SLES.9.LogFile.Syslog.SSHAuth.PAM.Root.Success.Alert (Rule)

通过 PAM SSH 来检测根身份验证的警报规则

Knowledge Base article:

摘要

检测到直接登录根帐户。

原因

可能会授权用户访问特权帐户。该监视器允许系统管理员跟踪作为根用户的直接登录。

解决方法

警报和/或输出数据项的描述包含有关遇到的事件的信息。如果 'su' 使用率可疑，请检查关联的事件的详细信息以及此事件附近发生的任何其他事件。

Element properties:

TargetMicrosoft.Linux.SLES.9.Computer
CategoryEventCollection
EnabledTrue
Alert GenerateTrue
Alert SeverityInformation
Alert PriorityNormal
RemotableTrue
Alert Message
检测到已使用“根”帐户进行身份验证通过 SSH 登录到系统
{0}

Member Modules:

ID Module Type TypeId RunAs 
EventDS DataSource Microsoft.Unix.SCXLog.Privileged.Datasource Default
GenerateAlert WriteAction System.Health.GenerateAlert Default

Source Code:

<Rule ID="Microsoft.Linux.SLES.9.LogFile.Syslog.SSHAuth.PAM.Root.Success.Alert" Target="Microsoft.Linux.SLES.9.Computer" Enabled="true" Remotable="true">

  <Category>EventCollection</Category>

  <DataSources>

    <!-- [TYPE] SUSE SSH True -->

    <!-- [INPUT] Jul  6 22:47:41 scxom64-sles9-03 sshd[12904]: Accepted keyboard-interactive/pam for root from 172.30.180.171 port 22635 ssh2 -->

    <!-- [INPUT] Oct 13 04:46:19 linux sshd[6834]: Accepted publickey for root from ::ffff:192.168.233.130 port 35342 ssh2 -->

    <!-- [INPUT-MISS] Jul  6 22:49:08 scxom64-sles9-03 sshd[12934]: Accepted keyboard-interactive/pam for ccrammo from 172.30.180.171 port 22641 ssh2 -->

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

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

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

      <RegExpFilter>\s+sshd\[[[:digit:]]+\]: Accepted \S+ for root from \S+</RegExpFilter>

      <IndividualAlerts>false</IndividualAlerts>

    </DataSource>

  </DataSources>

  <WriteActions>

    <WriteAction ID="GenerateAlert" TypeID="SystemHealth!System.Health.GenerateAlert">

      <Priority>1</Priority>

      <Severity>0</Severity>

      <AlertMessageId>$MPElement[Name="Microsoft.Linux.SLES.9.LogFile.Syslog.SSHAuth.PAM.Root.Success.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

        <AlertParameter1>$Data/EventDescription$</AlertParameter1>

      </AlertParameters>

      <Suppression>

        <SuppressionValue/>

      </Suppression>

    </WriteAction>

  </WriteActions>

</Rule>