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Weak Signature Algorithm Error in SAML Request

Microsoft.ActiveDirectoryFederationServices20.TokenIssuanceSAMLRequestUnsupportedSignatureAlgorithmRule (Rule)

Knowledge Base article:

Summary

The token that was used to authenticate the user or the request is signed with the expected signature algorithm.

Causes

The signature algorithm for the partner is not configured correctly.

Resolutions

Verify that signature algorithm for the partner is configured as expected. Use the information in this event to correct the signature algorithm.

Element properties:

TargetMicrosoft.ActiveDirectoryFederationServices20.TokenIssuance
CategorySecurityHealth
EnabledTrue
Event_ID378
Alert GenerateTrue
Alert SeverityWarning
Alert PriorityNormal
RemotableTrue
Alert Message
Weak Signature Algorithm Error In SAML Request
The token that was used to authenticate the user or the request is signed with the signature algorithm '{0}' which is not the expected signature algorithm '{1}'. Check the Alert Context tab for event details.
Event Log$Target/Host/Host/Property[Type="Microsoft.ActiveDirectoryFederationServices20.FederationServer"]/ADFSEventLog$

Member Modules:

ID Module Type TypeId RunAs 
DS DataSource Microsoft.Windows.EventProvider Default
Alert WriteAction System.Health.GenerateAlert Default

Source Code:

<Rule ID="Microsoft.ActiveDirectoryFederationServices20.TokenIssuanceSAMLRequestUnsupportedSignatureAlgorithmRule" Enabled="true" Target="Microsoft.ActiveDirectoryFederationServices20.TokenIssuance" ConfirmDelivery="true" Remotable="true" Priority="Normal" DiscardLevel="100">

  <Category>SecurityHealth</Category>

  <DataSources>

    <DataSource ID="DS" TypeID="Windows!Microsoft.Windows.EventProvider">

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

      <LogName>$Target/Host/Host/Property[Type="Microsoft.ActiveDirectoryFederationServices20.FederationServer"]/ADFSEventLog$</LogName>

      <Expression>

        <And>

          <Expression>

            <SimpleExpression>

              <ValueExpression>

                <XPathQuery Type="UnsignedInteger">EventDisplayNumber</XPathQuery>

              </ValueExpression>

              <Operator>Equal</Operator>

              <ValueExpression>

                <Value Type="UnsignedInteger">378</Value>

              </ValueExpression>

            </SimpleExpression>

          </Expression>

          <Expression>

            <RegExExpression>

              <ValueExpression>

                <XPathQuery Type="String">PublisherName</XPathQuery>

              </ValueExpression>

              <Operator>MatchesMOM2005RegularExpression</Operator>

              <Pattern>(^AD FS$)|(^AD FS 2.0$)</Pattern>

            </RegExExpression>

          </Expression>

        </And>

      </Expression>

    </DataSource>

  </DataSources>

  <WriteActions>

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

      <Priority>1</Priority>

      <Severity>1</Severity>

      <AlertOwner/>

      <AlertMessageId>$MPElement[Name="Microsoft.ActiveDirectoryFederationServices20.TokenIssuanceSAMLRequestUnsupportedSignatureAlgorithmRule.AlertMessage"]$</AlertMessageId>

      <AlertParameters>

        <AlertParameter1>$Data/Params/Param[1]$</AlertParameter1>

        <AlertParameter2>$Data/Params/Param[2]$</AlertParameter2>

      </AlertParameters>

      <Suppression>

        <SuppressionValue>$Data/EventDisplayNumber$</SuppressionValue>

      </Suppression>

      <Custom1/>

      <Custom2/>

      <Custom3/>

      <Custom4/>

      <Custom5/>

      <Custom6/>

      <Custom7/>

      <Custom8/>

      <Custom9/>

      <Custom10/>

    </WriteAction>

  </WriteActions>

</Rule>