TO UNSUBSCRIBE: email "unsubscribe issforum" in the body of your message to [EMAIL PROTECTED] Contact [EMAIL PROTECTED] for help with any problems! ---------------------------------------------------------------------------- -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Copyright 2001 Internet Security Systems (trademark) THE POWER TO PROTECT INTERNET THREAT & SOLUTIONS UPDATE for September 21st - 24th, 2001 ISS X-Force Special Operations Group - -------------------------------------- CURRENT THREAT ASSESSMENT & THREAT FORECAST - -------------------------------------- AlertCon 2 Today, September 21st, 2001 AlertCon 2 Projected for September 22nd - 24th, 2001 Today's Focus: Nimda Clean-up; Aggressive security patching ************* - - We have reduced to AlertCon 2 (increased vigilance) for today and we're projecting AlertCon 2 through the weekend. We should all be watching for two things; an uptick in Nimda or signs indicating the arrival of a new, fast spreading worm. There is no reason to conclude that the authors of these worms are finished with us. - - Nimda activity on our monitored networks is down considerably, though since Nimba alarms can look like both Code Red and Code Blue it's hard to peg the numbers accurately to any specific code across a global IDS network. - - Recommended security focus for today should be on the last stages of Nimda clean-up accompanied by an aggressive campaign to make sure all OS in use are up to date with the latest security patch. If Nimda taught us anything, it's that all vulnerabilities are fair game, not just IIS. - --------------------------------------- SOLUTIONS - --------------------------------------- - - Patch everything and continue to upgrade your patches as new vulnerability solutions are released. Whenever OS are installed or reinstalled if all the patches since that OS release date are not included in this task you have left a gaping hole in your network. The same is true for anti-virus updates. - - Microsoft's web site has the full solution set for its products at this site: <http://www.microsoft.com/technet/treeview/default.asp?url=/technet/sec urity/topics/Nimda.asp> - - All the major anti-virus vendors now have Nimda solutions. Aris has an excellent write-up on the Worm and some further links to security solutions: <http://aris.securityfocus.com/alerts/nimda/010919-Analysis-Nimda.pdf> - - Make sure you have procedures for backing up key data, and that all users understand and comply. Ensure that backups are stored off site and off line. - - Check your firewall policies to make sure only the minimum number of ports and protocols are allowed. Because Nimda spreads via file shares, ensure netbios traffic (port 139 especially) is not passing through the firewall. This prevents share points from being accessed from outside the firewall. Any network using file sharing between geographical areas is a bad idea and should be questioned and ended if not fully justified. If justified, it should be handled via VPN connection. - ------------------------------------- Attack Signatures - global IDS, midnight - midnight, previous day, % of total - ------------------------------------- Denial Of Service 69.80% Suspicious Activity 13.21% Protocol Decode 08.34% Unauth Access Attempts 07.78% Pre-Attack Probe 00.87% Back Doors 00.01% - ------------------------------------- Top Ten Destination Ports - global IDS, midnight - midnight, previous day, % of top ten (ports found at <http://www.iana.org/assignments/port-numbers> - ------------------------------------- 80 (http) 85.59% 25 (smtp) 07.69% 69 (tftp) 03.95% 139 (netbios-ssn) 01.04% 443 (https) 00.37% 31500 (unassigned) 00.35% 53 (domain) 00.30% 6768 (bmc-perf-mgrd) 00.24% 137 (netbios-ns) 00.23% 2560 (labrat) 00.22% - --------------------------------------- VIRUS, VULNERABILITY, NEWS UPDATES - --------------------------------------- <http://www.iss.net/> under "Global Internet Threat Intelligence Service" - --------------------------------------- NOTE, DISCLAIMER AND COPYRIGHT NOTICE - --------------------------------------- NOTE: Our web site with this information in more attractive format and graphics is available to the public at no cost at <http://www.iss.net/> under "Global Internet Threat Intelligence Service". Screen captures (Control/PrtSc) of the site's pages dropped into PowerPoint can be an effective way to communicate various aspects of the Internet threat, e.g. the graph depicting "AlertCon Trends". We provide this information on Internet threat metrics, viruses, vulnerabilities, patches, and breaking news, in the spirit of PDD 63, to help security professionals wage the war against Internet threats more effectively. Information in this update derived primarily from global, real time, 24 x 7 IDS feeds, ISS X-Force R&D Team research, and professional liaison. Other sources as noted. AlertCon 1 reflects the global, malicious, determined, 24 x 7 attacks experienced by all networks. AlertCon 2 means increased vigilance/action recommended due to a specific threat or concern. AlertCon 3 means increased attacks against specific targets or vulnerabilities on a scale that is unusually high, action required. AlertCon 4 reflects an Internet emergency for a target or group of targets whose business continuity may depend on some sort of immediate, decisive action. All summaries cover 24 hours the previous workday, GMT. Monday summaries may cover some weekend activity. Copyright 2001 Internet Security Systems, Inc. Permission is granted for the redistribution of the Internet Threat Update electronically. It is not to be sold or edited in any way without express consent of ISS. Refer comments or questions to [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>. Disclaimer: This information is subject to change without notice. Use of this information constitutes acceptance for use in an "as is" condition. There are no warranties with regard to this information. In no event shall the author be liable for any damages whatsoever arising out of or in connection with the use or spread of this information. Any use of this information is at the user's own risk. No other use authorized. FOIA Exemption 4. Dennis Dennis Treece Director, Global MSS Special Operations Group Internet Security Systems (ISS) 6303 Barfield Road Atlanta, Georgia 30328 404-236-4065 Cell 404-667-9345 Fax 404-236-2626 Internet Security Systems -- The Power to Protect Confidentiality Notice: This message is being sent by or on behalf of a network security professional. It is intended exclusively for the individual to whom it is addressed. This communication may contain information that is proprietary, privileged or confidential. -----BEGIN PGP SIGNATURE----- Version: PGP 6.5 iQA/AwUBO6trheOOe/7N9KJeEQKhWgCfUI5DlrDvk0+3mFTeOhQFKMNhiLAAmgMr /UQK3zP8qJ5iNx35Ls10g1py =7+tY -----END PGP SIGNATURE-----
AlertCon 2/2 Internet Threat and Solutions update for 21-24 Sep 2001
Treece, Dennis (ISS Atlanta) Fri, 21 Sep 2001 09:47:31 -0700
