ELinks http_negotiate.c security bypass
| elinks-httpnegotiate-security-bypass (80882) |  Medium Risk |
Description:
ELinks could allow a remote attacker to bypass security restrictions, caused by improper handling of GSSAPI credentials by GSS-Negotiate feature in the http_negotiate.c when performing credential delegation. A remote attacker could exploit this vulnerability to bypass security restrictions and gain unauthorized access to the vulnerable application.
*CVSS:
| Base Score: | 7.5 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 6.5 |
| Exploitability: | High |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Bypass Security
Remedy:
Upgrade to the latest version of ELinks (0.12~pre5-2+squeeze1 or 0.12pre6 or later), available from the ELinks Web site. See References.
References:
- BugTraq Mailing List, Thu Dec 27 2012 - 21:37:23 CST: elinks security update.
- ELinks GIT Repository Web Site: ELinks GIT Repository.
- ELinks Web Site: ELinks.
- BID-57065: ELinks CVE-2012-4545 Security Bypass Vulnerability
- CVE-2012-4545: The http_negotiate_create_context function in protocol/http/http_negotiate.c in ELinks 0.12 before 0.12pre6, when using HTTP Negotiate or GSS-Negotiate authentication, delegates user credentials through GSSAPI, which allows remote servers to authenticate as the client via the delegated credentials.
- DSA-2592: elinks -- programming error
- RHSA-2013-0250: Moderate: elinks security update
Platforms Affected:
- ELinks ELinks 0.12pre5
- RedHat Enterprise Linux 5 Client
- RedHat Enterprise Linux 5
- RedHat Enterprise Linux 6 Server
- RedHat Enterprise Linux 6 Workstation
- RedHat Enterprise Linux Desktop 6
- RedHat Enterprise Linux HPC Node 6
Reported:
Dec 27, 2012
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* 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.