Vulnerability Note VU#924812

Nokia Gateway GPRS support node vulnerable to DoS

Original Release date: 20 Aug 2003 | Last revised: 20 Aug 2003

Overview

A vulnerability in the Nokia Gateway GPRS support node (GGSN) may allow a remote attacker to cause a denial of service.

Description

A vulnerability in the GGSN may allow a remote attacker to restart the device. For technical details, please see the @stake Security Advisory Nokia GGSN (IP650 Based) DoS Issues.

Nokia describes the GGSN as follows:

    The Nokia GGSN is the network element that provides the interface between the GPRS network and external IP networks, such as the Internet and corporate intranet. By providing secure connections to external packet networks, the GGSN links the GPRS network to the Internet, ISPs and corporate intranets. The GGSN also provides allocation of IP address.

Impact

A remote attacker may be able to restart the GGSN, which will disrupt connectivity within the GPRS network that the GGSN is responsible for.

Solution

Obtain an upgraded IPSO from Nokia.

Workarounds

Nokia recommends the following:

    As an interim measure operators can perform the following preventative configuration changes to their networks. Ensure that all IP packets  with non standard IP options are dropped by boarder firewalls on the  Gi interface. Within the Gn network ensure that the GTP aware firewall (if present) also drops all encapsulated IP packets with non standard  IP options. This may introduce latency however it will mitigate against the attack until the patch has been fully deployed and tested.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
NokiaAffected-20 Aug 2003
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A

References

Credit

This vulnerability was discovered by @stake, Inc.

This document was written by Ian A Finlay.

Other Information

  • CVE IDs: CAN-2003-0368
  • Date Public: 09 Jun 2003
  • Date First Published: 20 Aug 2003
  • Date Last Updated: 20 Aug 2003
  • Severity Metric: 5.62
  • Document Revision: 10

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