Published Release Notes

Protect against insecure deserialization

Deserialization is the process of rebuilding a data stream into a Java object. The Open Web Application Security Project (OWASP) has identified insecure deserialization as one of the top 10 security vulnerabilities for web applications. Pega Platform™ protects against this vulnerability by using filters that prevent deserialization of suspect data streams. You can configure these filters from the Deserialization Blacklist landing page.

For more information, see Configuring the deserialization filter.

Token credentials authentication service

You can create a new type of authentication service for token credentials authentication, which is useful for offline mobile applications. With token credentials authentication, users need to enter their credentials only once in a session. Subsequent access to the server is authenticated with a token. The token can be generated by the Pega Platform™ authorization layer (OAuth 2.0) or issued by an external identity provider.

For more information, see Configuring a token credentials authentication service.

Platform truststore for validating certificates

Pega Platform™ now includes a platform truststore, to which you can import X.509 certificates that are common across platform applications. When a certificate needs to be validated, Pega Platform looks for the certificate at the connector level, then in the platform truststore, and finally in the application server (JVM) truststore. You can add, update, and delete certificates in the platform truststore without having to restart the server, which is useful when TLS certificates are changed for reasons such as key rotation.

For more information, see Importing an X.509 certificate.

Support for additional key management services

By supporting additional key management services, Pega Platform™ offers you increased flexibility when defining keys that are used for encryption of application and internal system data. You can now create keystores that reference keys from key management services such as Microsoft Azure Key Vault, HashiCorp Vault, and Google Cloud KMS, in addition to Amazon KMS. You can also create a keystore that references other key management services through the use of a data page.

For more information, see Configuring a Microsoft Azure Key Vault keystore, Configuring a HashiCorp Vault keystore, and Configuring a Google Cloud KMS keystore.

Expanded checks for Java injection vulnerabilities (8.4)

The Java injection vulnerability check feature has been enhanced in Pega Platform™ to further prevent Java injection, including Edit validate, Edit input, and JSP rules. Pega Platform reports errors at design time and run time, and does not run any rule that includes any of the following Java code:

• JavaCompiler
• new ProcessBuilder()
• org.dita.dost.invoker
• Runtime.getRuntime()

For more information, see Configuring the Java injection check.

Improvements to OAuth 2.0 Services with Token Introspection Service and Token Denylist Service

Increase the security of user sessions by using the newly supported Token Introspection and Denylist services for OAuth 2.0.

Token Introspection service

Use the Token Introspection service to validate JSON Web Tokens (JWT). The Token Introspection service requires authentication. 

Pega now uses OAuth 2.0 access tokens called Authorized Access Tokens (AAT). 

Token Introspection service endpoint

The Token Introspection service endpoint provides the information about the status of access token and refresh token. Token introspection can be used to validate if a given token is still active or inactive. The token introspection endpoint determines whether the token is valid. The status indicates whether an access token or refresh token is valid or invalid: 

• Valid tokens have the “active”:true status
• Invalid tokens have the “active” :false status.

The inactive status can also be due to revocation. 

Token Denylist service

You can add tokens to the deny list in cases where suspicious activity might have occurred. The Token Denylist service provides a method for denying user access to the application by revoking the user's access token. This service can prevent a token from being used more than the specified number of times, which can be helpful in preventing replay attacks. Stolen tokens should be revoked using this service. A GET API is also available to get the list of denied tokens.

Keys endpoint

Pega Platform™ is changing from using opaque tokens to JSON Web (JWT) tokens. If this JWT is used by any other system, the public key is needed for signature verification. A new endpoint is exposed to provide these public keys in JWK format: https://host:port/prweb/api/oauth2/v1/token/keys.

For more information, see OAuth 2.0 Management Services.

Enhanced refresh token strategy

You now have more precise control over your refresh token expiration strategy. When a refresh token is enabled, you can choose to set its initial expiration based on the value provided by the IDP. The refresh token expiry can be derived from IDP’s session timeout when SSO is used with external IDP for user authentication in the authorization code grant flow. You can also specify a separate refresh token expiration strategy based on your use-case. 

These can be configured in the OAuth2 Client registration rule form.

For more information, see Enhanced refresh token strategy.

Enhancements to token lifetime limits

Pega Platform™ uses OAuth 2.0 authorization codes, access tokens, and refresh tokens to provide flexible token-based security for applications. Expiration settings for these codes and tokens now adhere to certain strict value range based on industry leading practices. For example, the lifetime specified for the authorization code must be in the range 1-600 seconds.

These can be configured in the OAuth2 Client registration rule form.

For more information, see OAuth 2.0 Management Services.

Addition of Data Access Tab to access control policy condition rules

You can now select associations and declarative index classes when creating access control policy condition rules. The Column source field in the policy condition can now accept properties from available associations and indexes. For ease of reference, the selected associations and indexes are available on the new Data Access tab. 

Using the new tab, you can build complex authorization models in which access restrictions for a class depend on the attributes present in the associated and indexed classes, along with the attributes in the current class. For example, a project management application can now separately maintain project lists for each operator and use that information to restrict read/write access to unique projects.

The information available on the new Data Access tab reflects rule form changes, which are similar to the existing functionality of the Report Definition in the Application Data Model. 

For more information, see Creating an access control policy condition.

Cosmos React-UI supports custom authentication

Pega Platform™ now supports custom authentication in applications that use Cosmos React-UI. Depending on the needs of your users and the functionality of your application, you might need to write custom authentication schemes to meet specific requirements. 

Clients that use custom authentication in their applications can now take advantage of the Cosmos React-UI.

For more information, see Securing Cosmos React-UI applications.