TIBCO Security Advisory: June 5, 2006 - TIBCO Rendezvous®

TIBCO Rendezvous® vulnerability

Original release date: June 5, 2006
Last revised: --
Source: TIBCO Software Inc.

TIBCO would like to extend its appreciation to Andres Tarasce Acura of the SIA Group for discovery of this vulnerability, which has been addressed in the 7.5.1 release.

Description

TIBCO Rendezvous daemon components listed below contain a buffer overflow vulnerability in the HTTP administrative interface. The impact of this vulnerability may include remote execution of arbitrary code, information disclosure, and denial of service.

TIBCO has released updates which address critical vulnerabilities in daemon components of TIBCO Rendezvous and TIBCO Runtime Agent. TIBCO strongly recommends sites running the affected components to install the update or take mitigating action as appropriate.

Systems Affected

TIBCO Rendezvous versions below 7.5.1

TIBCO Runtime Agent (TRA) versions below 5.4

TIBCO Hawk versions below 4.6.1

The following components are affected:

  • TIBCO Rendezvous Routing Daemon (rvrd)
  • TIBCO Rendezvous Secure Routing Daemon (rvsrd)
  • TIBCO Rendezvous Secure Daemon (rvsd)
  • TIBCO Rendezvous Cache (rvcache)
  • TIBCO Rendezvous Agent (rva)

Impact

The impact of this vulnerability varies depending on the operating system, configuration options of the daemon, and the privilege levels of the user that invokes the daemon.

On Unix based systems, the successful exploit will allow arbitrary code execution with the privileges of the user that invoked that daemon, with the exception of user id 0 ("root"). If the daemon component was invoked by user id 0, a successful exploit will result in access to privileges of user id 65534 ("nobody").

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

Solution

Upgrade TIBCO Rendezvous to version 7.5.1 or above.  This is strongly recommended.

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

  • Disable the HTTP administrative interface by use of the "-no-http" option.  This will block the vulnerability completely.
  • Set the administrative username and password of the daemon component.  This will restrict access to the vulnerability to users possessing administrative access to the daemon component.  It is also recommended that the administration interface be restricted to HTTPS by use of the "-https-only" option.
  • Restrict access to the HTTP administrative interface to users on the local host by use of the "-http" and "-https" options (example: "-http 127.0.0.1:7580 -https 127.0.0.1:7585").  This will restrict access to the vulnerability to users with login access to the host.
  • Use a user with restricted privileges to invoke the daemon components.
  • On Unix systems, invoke the daemon components from a chroot environment.  This will restrict the ability to access or modify information in the event of a successful exploit.

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