Vulnerabilities > CVE-2011-1895 - Code Injection vulnerability in Microsoft Forefront Unified Access Gateway 2010
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
PARTIAL Availability impact
NONE Summary
CRLF injection vulnerability in Microsoft Forefront Unified Access Gateway (UAG) 2010 Gold, Update 1, Update 2, and SP1 allows remote attackers to inject arbitrary HTTP headers, and conduct HTTP response splitting attacks and cross-site scripting (XSS) attacks, via unspecified vectors, aka "ExcelTable Response Splitting XSS Vulnerability."
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 4 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Leverage Executable Code in Non-Executable Files An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
- Manipulating User-Controlled Variables This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.
Msbulletin
| bulletin_id | MS11-079 |
| bulletin_url | |
| date | 2011-10-11T00:00:00 |
| impact | Remote Code Execution |
| knowledgebase_id | 2544641 |
| knowledgebase_url | |
| severity | Important |
| title | Vulnerabilities in Microsoft Forefront Unified Access Gateway Could Cause Remote Code Execution |
Nessus
| NASL family | Windows : Microsoft Bulletins |
| NASL id | SMB_NT_MS11-079.NASL |
| description | The version of Forefront Unified Access Gateway (UAG) running on the remote host has multiple vulnerabilities in the Web Monitor component : - An HTTP response splitting vulnerability in ExcelTable.asp. (CVE-2011-1895) - A reflected XSS in ExcelTable.asp. (CVE-2011-1896) - A reflected XSS in Default.asp. (CVE-2011-1897) - A code execution vulnerability in a signed Java applet. Users that access the UAG server from a Java-enabled web browser are affected. (CVE-2011-1969) - Processing a null session cookie can cause the web server to become unresponsive. (CVE-2011-2012) |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 56453 |
| published | 2011-10-11 |
| reporter | This script is Copyright (C) 2011-2018 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/56453 |
| title | MS11-079: Vulnerabilities in Microsoft Forefront Unified Access Gateway Could Cause Remote Code Execution (2544641) |
| code | |
Oval
| accepted | 2014-02-17T04:00:09.835-05:00 | ||||||||||||||||
| class | vulnerability | ||||||||||||||||
| contributors |
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| definition_extensions |
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| description | CRLF injection vulnerability in Microsoft Forefront Unified Access Gateway (UAG) 2010 Gold, Update 1, Update 2, and SP1 allows remote attackers to inject arbitrary HTTP headers, and conduct HTTP response splitting attacks and cross-site scripting (XSS) attacks, via unspecified vectors, aka "ExcelTable Response Splitting XSS Vulnerability." | ||||||||||||||||
| family | windows | ||||||||||||||||
| id | oval:org.mitre.oval:def:13064 | ||||||||||||||||
| status | accepted | ||||||||||||||||
| submitted | 2011-10-11T13:00:00 | ||||||||||||||||
| title | ExcelTable Response Splitting XSS Vulnerability | ||||||||||||||||
| version | 26 |