A light week, but Novell Netmail users should upgrade right away and Quicktime users need to avoid careless browsing until Apple fixes the problem there.
SANS 2007 - with 53 hands-on immersion training courses and a big product expo - will be in San Diego this year. Full schedule of courses: http://www.sans.org/sans2007/event.php
@RISK is the SANS community's consensus bulletin summarizing the most important vulnerabilities and exploits identified during the past week and providing guidance on appropriate actions to protect your systems (PART I). It also includes a comprehensive list of all new vulnerabilities discovered in the past week (PART II).
************************ Sponsored By SANS ******************************
Interested in enhancing your knowledge after attending a SANS training event? The solution is the OnDemand Bundle for $379! An online training and assessment system that reinforces the concepts taught in the classroom. For more information email ondemand@sans.org or call (301) 654-7267.
*************************************************************************
Part I for this issue has been compiled by Rob King and Rohit Dhamankar at TippingPoint, a division of 3Com, as a by-product of that company's continuous effort to ensure that its intrusion prevention products effectively block exploits using known vulnerabilities. TippingPoint's analysis is complemented by input from a council of security managers from twelve large organizations who confidentially share with SANS the specific actions they have taken to protect their systems. A detailed description of the process may be found at http://www.sans.org/newsletters/cva/#process
Description: Apple QuickTime, a widely used media player, contains a stack-based buffer overflow in handling RTSP URLs. The overflow has been discovered by the "Month of Apple Bugs" project, and can be triggered by a specially crafted RTSP URL that is 300 bytes or longer. A malicious webpage or a media file can exploit this flaw to execute arbitrary code on a user's system. Note that systems using QuickTime as the default media player can be compromised upon browsing to a malicious webpage without any user interaction. Exploit code has been publicly posted.
Status: Apple has not confirmed, no patches available. A workaround is to disable the RTSP URL handler.
Description: Novell Netmail, an email and calendaring system, contains multiple buffer overflow vulnerabilities in its IMAP and NMAP (Network Messaging Application Protocol) services. (a) The IMAP protocol allows strings to be specified in either "literal" or "quoted" format. For a "literal" string, the length value precedes the actual string. NetMail's IMAP service does not properly validate the length of user-supplied literal strings such as IMAP command arguments. This leads to heap-based buffer overflows that can be triggered by supplying specially crafted arguments to any of the IMAP commands. An unauthenticated attacker can exploit the overflows to execute arbitrary code on the NetMail server. (b) The IMAP service contains buffer overflows in its "APPEND" and "SUBSCRIBE" command implementations. Similarly, the NMAP service contains a buffer overflow in its "STOR" command implementation. These flaws can be exploited by authenticated attackers to execute arbitrary code on the NetMail server.
Status: Novell confirmed, upgrade to NetMail version 3.52e ftf 2. Hula (alpha version) is an open-source project based on NetMail. Current testers of Hula software should check if their version is vulnerable to these flaws. Council Site Summary: The affected software and/or configuration are not in production or widespread use, or are not officially supported at any of the council sites. They reported that no action was necessary.
Description: Cacti is a popularly used network graphics software package on UNIX. Cacti contains remote command execution and SQL injection vulnerabilities in its "cmd.php" script. An attacker can exploit these flaws to execute arbitrary commands on a web server running Cacti. Exploit code has been publicly posted.
Status: Vendor not confirmed, no patches available. A workaround is to ensure that cmd.php script is not accessible via web requests. Council Site Summary: The affected software and/or configuration are not in production or widespread use, or are not officially supported at any of the council sites. They reported that no action was necessary.
This list is compiled by Qualys ( www.qualys.com ) as part of that company's ongoing effort to ensure its vulnerability management web service tests for all known vulnerabilities that can be scanned. As of this week Qualys scans for 5321 unique vulnerabilities. For this special SANS community listing, Qualys also includes vulnerabilities that cannot be scanned remotely. 07.1.1 CVE: Not Available Platform: Third Party Windows Apps Title: FTPRush Host Field Local Buffer Overflow Description: FTPRush is an FTP client available for Microsoft Windows. It is prone to a local buffer overflow vulnerability due to insufficient bounds checking on the Host field in the client GUI. FTPRush version 1.0.0.610 is reportedly vulnerable. Ref: http://www.securityfocus.com/bid/21714
(c) 2007. All rights reserved. The information contained in this newsletter, including any external links, is provided "AS IS," with no express or implied warranty, for informational purposes only. In some cases, copyright for material in this newsletter may be held by a party other than Qualys (as indicated herein) and permission to use such material must be requested from the copyright owner.
Subscriptions: @RISK is distributed free of charge to people responsible for managing and securing information systems and networks. You may forward this newsletter to others with such responsibility inside or outside your organization.