TIBCO Hawk and derived components listed above contain buffer overflow vulnerabilities in the processing of inbound data. The impact of these vulnerabilities may include remote execution of arbitrary code, information disclosure, and denial of service.

TIBCO has released updates which address critical vulnerabilities in the The Hawk AMI C library and Hawk Monitoring Agent.

The TIBCO Hawk AMI C library and derived components contain a vulnerability that may allow an attacker to compromise an application by sending a specially crafted message.

TIBCO strongly recommends sites running the affected components to install the update or take mitigating action as appropriate.

• TIBCO Hawk versions below 4.8.1
• TIBCO Runtime Agent (TRA) versions below 5.6.0
• TIBCO iProcess Engine versions 10.3.0 thru 10.6.2, and 11.0.0
• TIBCO Mainframe Service Tracker versions below 1.1.0

The following components are affected:

• TIBCO Hawk AMI C library (libtibhawkami)
• TIBCO Hawk HMA (tibhawkhma)

The impact of these vulnerabilities varies depending on the operating system and the privilege levels of the user that invoked the application.

On Unix based systems, a successful exploit will allow arbitrary code execution with the privileges of the user that invoked the application.

On Windows based systems, a successful exploit will allow arbitrary code execution with the privileges of the user that invoked the application. If the application is installed as a system service, this will result in access to system privileges.

Upgrade TIBCO Hawk to version 4.8.1 or above.   Update all components derived from TIBCO Hawk to use version 4.8.1 or above.  This is strongly recommended.

If an upgrade is not possible, the following actions can mitigate the vulnerabilities:

• If TIBCO Rendezvous is being used as the Hawk transport, utilize a firewall to restrict UDP/PGM access to the TIBCO Rendezvous network to trusted sources.
• If TIBCO Enterprise Messaging Service is being used as the Hawk transport, ensure that authorization is enabled in the EMS server and that only fully trusted users are allowed to publish on Hawk subjects.
• Use a user with restricted privileges to invoke the application.
• On Unix systems, set the permissions of the tibhawkhma executable such that it is not suid.
• On Unix systems, invoke the application from a chroot environment. This will restrict the ability to access or modify information in the  event of a successful exploit.