TWiki 401 response authentication bypass
| twiki-401response-authentication-bypass (30667) |  Low Risk |
Description:
TWiki could allow a remote attacker to bypass user authentication caused by the improper handling of a failed login attempt and 401 HTTP responses. A remote attacker could exploit this vulnerability to cancel a failed login attempt using a valid username and gain unauthorized access to the system to obtain sensitive information.
Note: Only applications running on Apache 1.3.x Web servers and using ApacheLogin with sessions or SessionPlugin are vulnerable.
*CVSS:
| Base Score: | 3.5 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Partial |
| Integrity Impact: | None |
| Availability Impact: | None |
| Temporal Score: | 2.7 |
| Exploitability: | Unproven |
| Remediation Level: | Temporary-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Apply the hotfix available from the TWiki SecurityAlert-CVE-2006-6071. See References.
References:
- TWiki SecurityAlert-CVE-2006-6071: Security Alert: Login bypass allows view of access restricted content (CVE-2006-6071) .
- TWiki Web site: Welcome to Twiki.
- BID-21381: TWiki Failed Login Information Disclosure Vulnerability
- CVE-2006-6071: TWiki 4.0.5 and earlier, when running under Apache 1.3 using ApacheLogin with sessions and ErrorDocument 401 redirects to a valid wiki topic, does not properly handle failed login attempts, which allows remote attackers to read arbitrary content by cancelling out of a failed authentication with a valid username and invalid password.
- SA23189: TWiki Authentication Bypass Vulnerability
- VUPEN/ADV-2006-4790: TWiki ErrorDocument Directive Handling Remote Authentication Bypass Vulnerability
Platforms Affected:
- TWiki TWiki 4.0.5
Reported:
Nov 30, 2006
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For corrections or additions please email xforce@iss.net
* According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES "AS IS" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.
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.