3Com TippingPoint IPS page fault detection bypass
| tippingpoint-ips-pagefault-detection-bypass (27934) |  Medium Risk |
Description:
3Com TippingPoint IPS (Intrusion Prevention System) devices running certain versions of TOS (TippingPoint Operating System) could allow a remote attacker to bypass detection mechanisms or cause a denial of service. By sending a malformed packet to an affected device, a remote attacker could cause a page fault which would result in the device switching to Layer 2 Fallback (L2FB) mode. Depending on device configuration, once in L2FB mode, the device would either block all traffic or allow all traffic to pass through the device, bypassing security detection.
*CVSS:
| Base Score: | 3.5 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | None |
| Integrity Impact: | None |
| Availability Impact: | Partial |
| Temporal Score: | 2.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Upgrade to the latest version of TOS (2.2.4.6519 or later), as listed in 3Com Security Alert: 3COM-06-003. See References.
References:
- 3Com Security Alert: 3COM-06-003 : TippingPoint¿ IPS Page Fault vulnerability.
- BugTraq Mailing List, Mon Jul 24 2006 - 06:41:24 CDT : [CYBSEC] TippingPoint detection bypass.
- BID-19125: Multiple TippingPoint IPS Malformed Packet Detection Bypass Vulnerability
- CVE-2006-3678: TippingPoint IPS running the TippingPoint Operating System (TOS) before 2.2.4.6519 allows remote attackers to force the device into layer 2 fallback (L2FB), causing a denial of service (page fault), via a malformed packet.
- SA21154: TippingPoint Layer 2 Mode Security Bypass Vulnerability
- SECTRACK ID: 1016562: TippingPoint Intrusion Prevention System Lets Remote Users Bypass the Detection Mechanism
- VUPEN/ADV-2006-2956: 3Com TippingPoint Operating System IPS Packets Handling Security Bypass Vulnerability
Platforms Affected:
- 3Com TippingPoint IPS TOS 2.1
- 3Com TippingPoint IPS TOS 2.1.3.6323
- 3Com TippingPoint IPS TOS 2.1.4.6324
- 3Com TippingPoint IPS TOS 2.2
- 3Com TippingPoint IPS TOS 2.2.0.6504
- 3Com TippingPoint IPS TOS 2.2.1
- 3Com TippingPoint IPS TOS 2.2.1.6506
- 3Com TippingPoint IPS TOS 2.2.2
- 3Com TippingPoint IPS TOS 2.2.3
- 3Com TippingPoint IPS TOS 2.2.3.6514
Reported:
Jul 24, 2006
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.