TippingPoint detection bypass

2007-07-12T00:00:00
ID SECURITYVULNS:DOC:17468
Type securityvulns
Reporter Securityvulns
Modified 2007-07-12T00:00:00

Description

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(The following advisory is also available in PDF format for download at: http://www.cybsec.com/vuln/CYBSEC-Security_Pre-Advisory_3Com_TippingPoint_IPS_Detection_Bypass_2.pdf )

CYBSEC S.A. www.cybsec.com

Pre-Advisory Name: TippingPoint detection bypass

Vulnerability Class: Design flaw

Release Date: 2007-07-04

Affected Platforms:

  • TippingPoint IPS running TOS versions 2.1.x, 2.2.x prior to 2.2.5, and 2.5.x prior to 2.5.2

Local / Remote: Remote

Severity: High

Author: Andres Riancho

Vendor Status:

  • Confirmed, updates released.

Reference to Vulnerability Disclosure Policy:

http://www.cybsec.com/vulnerability_policy.pdf

Product Overview:

"The TippingPoint Intrusion Prevention System (IPS) is an award-winning security solution that blocks worms, viruses, Trojans, Denial of Service and Distributed Denial of Service attacks, Spyware, VoIP threats, and Peer-to-Peer threats. Inspecting traffic through Layer 7, the IPS blocks malicious traffic before damage occurs."

Vulnerability Description:

When IP packets are fragmented in a special way, the appliance fails to correctly reassemble the data stream.

Technical Details:

Technical details will be released 30 days after publication of this pre-advisory. This was agreed upon with TippingPoint to allow their customers to upgrade affected software prior to technical knowledge been publicly available.

Impact:

Exploiting this vulnerability, an attacker would be able to bypass all filters and detection.

Solutions:

TippingPoint has released a new version of the TippingPoint OS to address this vulnerability. Customers should apply the new firmware immediately. More information can be found at http://www.3com.com/securityalert/alerts/3COM-07-002.html

Vendor Response:

  • 2006-02-06: Initial Vendor Contact.
  • 2006-06-20: Vendor Confirmed Vulnerability.
  • 2007-07-04: Vendor Releases Update.

Contact Information:

For more information regarding the vulnerability feel free to contact the author at ariancho {at} cybsec.com.

For more information regarding CYBSEC: www.cybsec.com (c) 2006 - CYBSEC S.A. Security Systems



Andres Riancho CYBSEC S.A. Security Systems E-mail: ariancho@cybsec.com PGP key: http://www.cybsec.com/pgp/ariancho.txt Tel/Fax: [54 11] 4371-4444 Web: http://www.cybsec.com


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