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SecurityFocus Microsoft Newsletter #137
From: Stephen Entwisle <se(at)securityfocus.com>
Date: Mon May 19 2003 - 15:44:54 EDT
This Issue is Sponsored By: SpiDynamics ALERT: Top 10 Web Application Attack Techniques and Methods to Combat them Learn why 70% of today's successful hacks involve Web Application attacks such as: SQL Injection, XSS, Cookie Manipulation, and Parameter Manipulation. All undetectable by Firewalls and IDS! Download *FREE* white paper from SPI Dynamics for a complete guide to protection! Visit us at: http://www.spidynamics.com/mktg/webappsecurity102 I. FRONT AND CENTER
The recent Nmap-hackers survey provides a glimpse of what security professionals are packing in their tool-belts these days. http://www.securityfocus.com/columnists/161 2. Malware Myths and Misinformation, Part One By David Harley This article is the first of a three-part series looking at some of the myths and misconceptions that undermine anti-virus protection. The fallacies we address here tend to begin with the words "I'm safe from viruses because..." http://www.securityfocus.com/infocus/1695
3. Securing Apache: Step-by-Step
This article shows in a step-by-step fashion, how to install and configure the Apache 1.3.x Web server in order to mitigate or avoid successful break-in when new vulnerabilities in this software are found. 4. U.S. Information Security Law, Part 3 By Steven Robinson This is the third part of a four-part series looking at U.S. information security laws and the way those laws affect security professionals. In this installment, we will look at the basics of the criminal information security law. http://www.securityfocus.com/infocus/1693
5. Relax, It Was a Honeypot
A security company cleverly tricks hackers into compromising one of its distribution sites. Really. http://www.securityfocus.com/columnists/162 II. BUGTRAQ SUMMARY
BitchX is a freely available, open source IRC client. It is available for Unix, Linux, and Microsoft operating systems. A denial of service vulnerability has been reported for BitchX. It is possible to cause BitchX to crash when certain mode changes are made. The vulnerability exists in the names.c source file where a check is not made for any arguments provided with a mode change. The precise details of this vulnerability are currently unknown. This BID will be updated as more information becomes available. This vulnerability affects BitchX cvs versions prior to 05/09/2003.
2. PHPNuke Web_Links Module Remote SQL Injection Vulnerability
BugTraq ID: 7558
PHPNuke is a freely available, open source content management system written in PHP. It is available for Unix, Linux, and Microsoft Operating Systems. It has been reported that multiple input validation bugs exist in the Web_Links module used by PHPNuke. The problem is in the sanitizing of data passed to construct database queries. Insufficient sanity checks are performed by the Web_Links module, making it possible to inject SQL code into the database behind PHPNuke. This issue could be exploited to gain access to potentially sensitive information contained in the database with the privileges of the web application. Compromise of the web forums may also be possible. Consequences could vary depending on the the queries involved and the capabilities of the underlying database implementation. These issues could be especially dangerous for databases that support the UNION function, allowing for execution of multiple queries. It should also be noted that an additional 20 instances of SQL injection vulnerabilities exist in this module.
3. Microsoft SQL Server Unspecified Vulnerability
BugTraq ID: 7541
A reliable source has reported an unspecified vulnerability in Microsoft SQL Server. SQL Server versions 7 and 2000, as well as the MSDE are said to be affected by this vulnerability. The report indicates that this vulnerability involves the Microsoft Jet OLE DB provider. This component is not enabled by default and should be disabled until a fix is available if it is not needed. Linked servers using the OLE DB provider are also reported to be vulnerable. Though unconfirmed, exploitation of this vulnerability by remote attackers may result in the compromise of affected hosts. This is a preliminary alert. This record will be updated when further details become available.
Netbus is a backdoor program that allows remote administration of a compromised system. It is available for Microsoft Windows operating systems. Netbus can be configured to require a password for backdoor server access. A vulnerability in Netbus may permit remote users to bypass authentication. If a connection is made to a Netbus server from a host, further connections from that IP address may not need to authenticate with the server. This could allow unauthorized access to the Netbus server.
5. EType EServ Resource Exhaustion Denial Of Service Vulnerability
BugTraq ID: 7552
EServ is a proxy software package distributed by EType. It is available for Microsoft Windows operating systems. A denial of service vulnerability has been reported for EServ. The vulnerability exists due to the way the server handles connections. Specifically, when EServ receives a connection, the server allocates a specific block of heap memory. Reportedly, when a connection is disconnected, the allocated memory is not adequately freed. This vulnerability exists due to a delayed response time, upwards of up to two minutes, when de-allocating memory from closed connections. An attacker can exploit this vulnerability by making numerous connections to the vulnerable server. For every connection, a small amount of memory is not properly freed from heap memory. Many connections to the vulnerable server will eventually result in a consumption of all available memory resources which may cause the system to become unstable. This vulnerability affects EServ 2.92 to 2.99.
6. Cerberus FTP Server Plaintext User Password Weakness
BugTraq ID: 7556
Cerberus is an FTP Server for Microsoft Windows operating systems. Cerberus FTP Server stores authentication credentials for the FTP service on the local system in plaintext. These credentials are stored in the 'users.pro' file in the program directory. Local users with access to this file may gain unauthorized access to the server as a result. Exposure of authentication credentials may also lead to compromise of other services/resources if the same credentials are commonly used.
7. Youngzsoft CMailServer MAIL FROM Buffer Overflow Vulnerability
BugTraq ID: 7547
CMailServer is a e-mail server designed for use with Microsoft Windows operating environments. A buffer overflow vulnerability has been reported for CMailServer. The vulnerability exists due to insufficient bounds checking when parsing e-mail headers. Specifically, an overly long MAIL FROM e-mail header will cause CMailServer to crash and corrupt sensitive memory. An attacker can exploit this vulnerability by crafting a malicious e-mail with an overly long MAIL FROM header field, consisting of at least 2000 bytes, to a vulnerable system. This will trigger the buffer overflow condition when CMailServer is used to process the e-mail and will result in the corruption of sensitive memory. It may also be possible for an attacker to cause CMailServer to execute malicious attacker-supplied instructions.
8. Internet Explorer file:// Request Zone Bypass Vulnerability
BugTraq ID: 7539
Internet Explorer uses zones in order to limit the scope of execution of code depending on the zone it originates from. A vulnerability has been reported that could allegedly allow an executable from the Internet to be run in the Local Computer zone. It has been alleged that if Internet Explorer attempts to open a web page containing more than 200 Iframes containing 'file://' requests for the same executable file, the file will eventually be executed in the Local Computer zone. This file would have to reside on the remote website serving the HTML document. A reliable source has reported that this vulnerability may be due to some form of resource exhaustion. It is unclear how resource exhaustion would allow the Iframe to violate the Internet Explorer security zone. This record will be updated if more information becomes available.
9. Best Practical Solutions RT HTML Injection Vulnerability
BugTraq ID: 7509
RT (Request Tracker) is a ticketing system implemented in Perl. It is distributed by Best Practical Solutions and is available for a variety of platforms including Microsoft Windows and Linux variant systems. A vulnerability has been discovered in RT which may make it prone to HTML injection attacks. The vulnerability exists due to insufficient sanitization of user-supplied values. Specifically, the content included in message bodies is not properly sanitized of malicious HTML code. This lack of sanitization provides an opportunity for an attacker to launch HTML injection attacks against the vulnerable site hosting RT. It is possible for a remote attacker to create a malicious ticket containing script code that will be executed in the browser of a legitimate user. Any attacker-supplied code will be executed within the context of the website running RT. This issue may be exploited to steal cookie-based authentication credentials from legitimate users of the website running the vulnerable software. The attacker may hijack the session of the legitimate by using cookie-based authentication credentials. Other attacks are also possible. This vulnerability was reported for RT 1.0.7 and earlier.
Snitz Forums 2000 is ASP-based web forum software. It runs on Microsoft Windows operating systems. Snitz is back-ended by a database and supports Microsoft Access 97/2000, SQL Server 6.5/7.0/2000 and MySQL. It is possible for a remote attacker to inject SQL into queries made by the register.asp script. Specifically, the 'email' variable is not properly sanitized of malicious SQL instructions. It is possible for a remote attacker to inject SQL into queries made by the register.asp script. This may be exploited to manipulate the logic of a query made by the script. Depending on the database implementation used, this may possibly result in sensitive information in the database being disclosed to the attacker or may enable the attacker to modify data. There is also the possibility that this issue may be leveraged to exploit vulnerabilities that may exist in the underlying database. The attacker would have to pass properly formatted SQL to the vulnerable script to exploit this issue. This vulnerability was reported for Snitz Forum 2000 3.3.03. It is likely that earlier versions are affected.
PHP-Nuke is a freely available, open source content management system written in PHP. It is available for Unix, Linux, and Microsoft Operating Systems. A cross site scripting vulnerability has been reported for PHP-Nuke. Specifically, PHP-Nuke does not sufficiently sanitize user-supplied input for the 'username' URI parameter to the modules.php script. As a result of this deficiency, it is possible for a remote attacker to create a malicious link containing script code that will be executed in the browser of a legitimate user. Specifically the attacker can pass malicious HTML code as a value for the 'username' URI parameter supplied to the 'modules.php' page. All code will be executed within the context of the website running PHP-Nuke. This may allow for theft of cookie-based authentication credentials and other attacks. This vulnerability was reported to affect PHP-Nuke version 6.5.
CMailServer is a e-mail server designed for use with Microsoft Windows operating environments. A buffer overflow vulnerability has been reported for CMailServer. The vulnerability exists due to insufficient bounds checking when parsing e-mail headers. Specifically, an overly long RCPT TO e-mail header will cause CMailServer to crash and corrupt sensitive memory. An attacker can exploit this vulnerability by crafting a malicious e-mail with an overly long RCPT TO header field, consisting of at least 2000 bytes, to a vulnerable system. This will trigger the buffer overflow condition when CMailServer is used to process the e-mail and will result in the corruption of sensitive memory. It may also be possible for an attacker to cause CMailServer to execute malicious attacker-supplied instructions.
PHP-Nuke is a web-based portal system. Implemented in PHP, it is available for a range of systems, including Unix, Linux, and Microsoft Windows. PHP-Nuke is reportedly prone to multiple SQL injection vulnerabilities in the Downloads. User-supplied input is included in SQL queries made by the module without being sanitized. Exploitation could allow for injection of malicious SQL syntax, resulting in modification of SQL query logic or other attacks. Consequences will vary depending on the specific queries and the capabilities of the underlying database implementation. At the very minimum it may be possible to gain access to sensitive information that is stored in the database.
Netscape is a web browser that is available for a number of platforms, including Microsoft Windows and Unix and Linux variants. An issue has been reported for Netscape Navigator that may result in a false sense of security for a user. Due to the way Netscape handles the history.back() function, the URL displayed on the 'location bar' will not correspond to the actual URL of the site displayed in the browser window. As a result, a malicious attacker can exploit this issue to entice a user to visit a web site and make them believe they are at known or trusted page. This vulnerability was reported for Netscape Navigator 7.02 for Windows operating systems.
vBulletin is commercial web forum software written in PHP and back-ended by a MySQL database. It will run on most Linux and Unix variants, as well as Microsoft operating systems. A vulnerability has been reported for vBulletin 3.0.0. beta 2 which may make it prone to HTML injection attacks. The problem is said to occur while previewing private messages. Specifically, private messages may not be sufficiently sanitized of malicious content. This may make it possible for an attacker to place HTML or script code within a private message for another user. When the legitimate forum user attempts to preview the message the malicious code will be interpreted by their browser. Attackers may potentially exploit this issue to manipulate web content or to steal cookie-based authentication credentials. It may be possible to take arbitrary actions as the victim user.
Inktomi Traffic Server is a transparent web caching application. It is designed for use with Unix and Linux variants as well as Microsoft Windows operating environments. Inktomi Traffic Server is prone to a cross-site scripting vulnerability. This is due to insufficient sanitization of input passed to the proxy, which will be echoed back in error pages under some circumstances. It has been reported that Inktomi Traffic Server will generate errors when an open port other than 80/http is requested. The connection will time out when the request port on the remote system is closed, which will not generate an error. There is one reported exception to this. The proxy server will generate an error for requests to port 443/https regardless of whether the port is open or whether the requested host exists. A malicious attacker could exploit this issue by creating a link which contains hostile HTML and script code and then enticing users of the proxy to visit the link. When the link is visited via the proxy, attacker-supplied script may be interpreted in the user's browser. Exploitation could permit HTML and script code to access properties of the domain that is requested through the proxy. This could permit theft of cookie-based authentication credentials from arbitrary domains or other attacks. III. MICROSOFT FOCUS LIST SUMMARY
http://www.securityfocus.com/archive/88/321655 2. Article Announcement: U.S. Information Security Law, Part 3 (Thread) Relevant URL: http://www.securityfocus.com/archive/88/321459 3. Harden ASP.NET Configuration (Thread) Relevant URL: http://www.securityfocus.com/archive/88/321353
4. Share Point? (Thread)
http://www.securityfocus.com/archive/88/321276 5. SecurityFocus Microsoft Newsletter #136 (Thread) Relevant URL: http://www.securityfocus.com/archive/88/321196
6. Timbuktu, etc. (Thread)
http://www.securityfocus.com/archive/88/321050 7. (prevent + detect Arp spoofing) + Securing Terminal Services (Thread) Relevant URL: http://www.securityfocus.com/archive/88/320976
8. IPSEC through Ms ISA Server (Thread)
http://www.securityfocus.com/archive/88/320975 IV. NEW PRODUCTS FOR MICROSOFT PLATFORMS
Abtrusion Protector prevents Windows from loading unrecognized or unknown software. Only software that you have safely installed or explicitly allowed can be loaded into memory. Contrary to typical anti-virus scanners, Abtrusion Protector is not dependent on frequent virus definition updates.
2. Kerio Personal Firewall
Kerio Personal Firewall represents smart, easy-to-use personal security technology that fully protects personal computers against hackers and internal misuse.
3. Symantec's Norton Internet Security 2003
by Symantec
Symantec's Norton Internet Security 2003 provides essential protection from viruses, hackers, and privacy threats. Included are full versions of Norton AntiVirus and Norton Personal Firewall, which efficiently defend your PC from the most common Internet dangers. You also get Norton Spam Alert to block unwanted email, and Norton Parental Control to protect your children online. V. NEW TOOLS FOR MICROSOFT PLATFORMS
Are You Concerned?
RainPortal was designed to secure your private messages while talking on IRC networks. As long as you have RainPortal running and the person you are talking to also, all your private messages will be strongly encrypted while passing on the server.
3. Glub Tech Secure FTP v2.0.4
Glub Tech Secure FTP is a command-line utility that allows FTP connections to be made using SSL. VI. SPONSOR INFORMATION This Issue is Sponsored By: SpiDynamics ALERT: Top 10 Web Application Attack Techniques and Methods to Combat them Learn why 70% of today's successful hacks involve Web Application attacks such as: SQL Injection, XSS, Cookie Manipulation, and Parameter Manipulation. All undetectable by Firewalls and IDS! Download *FREE* white paper from SPI Dynamics for a complete guide to protection! Visit us at: http://www.spidynamics.com/mktg/webappsecurity102 Received on Mon May 19 16:26:27 2003 This archive was generated by hypermail 2.1.8 : Wed Aug 23 2006 - 14:02:28 EDT |
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