R3000 Internet Filter HTTP request security bypass
| r3000-httprequest-security-bypass (44238) |  Medium Risk |
Description:
R3000 Internet Filter could allow a remote attacker to bypass security restrictions, caused by a weakness in URL filtering when processing HTTP headers. By sending a specially-crafted HTTP header with the string "Host:" followed by an unrestricted site, a remote attacker could exploit this vulnerability to bypass security restrictions and gain unauthorized access to restricted Web sites.
*CVSS:
| Base Score: | 7.5 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5.5 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Apply the patch for this vulnerability (R3000 patch version 2.1.05), available from the 8e6 Technologies Web site. See References.
References:
- 8e6 Technologies Web site: 8e6 Technologies.
- BugTraq Mailing List, Tue Aug 05 2008 - 02:19:46 CDT: 8e6 Technologies R3000 Internet Filter Bypass with Host Decoy.
- BID-30541: 8E6 Technologies R3000 Host Header Internet Filter Security Bypass Vulnerability
- CVE-2008-3494: 8e6 R3000 Internet Filter 2.0.12.10 allows remote attackers to bypass intended restrictions via an extra HTTP Host header with additional leading text placed before the real Host header.
- SA31391: 8e6 R3000 "Host" URL Filter Bypass Vulnerability
Platforms Affected:
- 8e6 Technologies R3000 Internet Filter 2.0.12.10
Reported:
Aug 05, 2008
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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.