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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 INTERNET THREAT UPDATE for 01-14-2002 ISS X-Force Special Operations Group www.iss.net - Click on 'Current Internet Threat' for more information. ****************************************************** ALERTCON 1 Projected: AlertCon 1 ****************************************************** ALERTCON 1 - AlertCon 1 reflects the malicious, determined, global, 24 x 7 attacks experienced by all networks. NETSCAPE: Remote attackers can easily disable unpatched Netscape Enterprise servers running on Windows NT/2000 with publishing enabled. By grabbing http://server?wp-html-rend/ multiple times an attack can crash the server remotely. CODE RED VARIANT: Our Global Sensor database indicates an increase in a new variant of the Code Red worm. Many systems have been brought on-line since the initial outbreak last summer and are vulnerable if the recommendations listed below are not followed. LINUX: A vulnerability has been found in the XChat IRC client that allows an attacker to take over the user's IRC session. UNIX: A vulnerability in the AFTPD has been discovered that could allow a remote user to gain elevated privileges. The problem presents itself when a user accesses the ftp server via any type of user account, either regular or anonymous. VIRUSES/WORMS: Closely monitor your anti-virus vendor for up-to-date solutions for current threats on a daily basis. FACTOID: According to Computer Economics, the worldwide economic impact of the Code Red worm was $2.62 billion. COMMENTARY: While social engineering, viruses and hackers continue to befuddle network administrators, laptops are considered to be an extremely prized article for those with larceny in their hearts. Pay close attention to where you place it when you travel, while you dine out, or where it is placed in an automobile. The bad guys will have no qualms about shattering a passenger window to extract an item that could fetch them a good sum. Perhaps a hard-sided small suitcase rather than the usual black nylon bag with the company logo on it would be appropriate. Consider not only the cost of replacing the machine but also consider the value of your company data contain in the computer - can you replace that? - ------------------------------------------------------ RECOMMENDATIONS - ------------------------------------------------------ For the Netscape vulnerability, please refer to: http://www.securiteam.com/securitynews/5VP0C0A60A.html Regarding the Code Red variant, we recommend defensive vulnerability scans be initiated and vendor patches be applied. Current anti-virus solutions should detect this variant with existing signatures. X-Force Advisory regarding the UPnP and IE 5.5 and 6.0 issues see: http://xforce.iss.net/alerts/advise107.php http://xforce.iss.net/alerts/advise106.php For the Debian Advisory and solution, please see: http://www.linuxsecurity.com/advisories/debian_advisory-1802.html Information regarding the AFTPD Home Directory Change Core Dump Vulnerability, please refer to: http://www.securityfocus.com/cgi-bin/vulns-item.pl?section=discussion&; id=3806 For information regarding the bad AIM fix see: http://www.computing.vnunet.com/News/1128120 For an excellent home/small office firewall solution, please see: http://www.networkice.com/ For information on removing infected executable files, refer to: http://www.sophos.com/support/faqs/filvir.html For other current worms and viruses moving across the Internet see: https://gtoc.iss.net/secure/viruses.php http://www.antivirus.com/vinfo/ - ------------------------------------------------------ ATTACK SIGNATURE RANKING - global IDS, midnight - midnight, previous Day, % of total - ------------------------------------------------------ Unauthorized Access Attempt 47.54% Protocol Decode 28.14% Denial Of Service 15.92% Suspicious Activity 05.69% Pre-Attack Probe 02.65% Back Door 00.06% - ------------------------------------------------------ TOP TEN ATTACK DESTINATION PORTS - global IDS, midnight - midnight, previous day, % of top ten (ports found at) http://www.networkice.com/Advice/Exploits/Ports/default.htm - ------------------------------------------------------ 80 (http) 89.12% 1214 (unassigned) 01.98% 21 (ftp) 01.96% 22 (ssh) 01.92% 25 (smtp) 01.84% 69 (tftp) 01.15% 443 (ssl) 00.76% 515 (lp,lpr,printer) 00.53% 53 (DNS) 00.38% 161 (SNMP) 00.36% - ------------------------------------------------------ BACKGROUND, COPYRIGHT NOTICE, and DISCLAIMER - ------------------------------------------------------ Background. We provide this information 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] or [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. Patrick Gray Manager, X-Force Internet Threat Intelligence Center Internet Security Systems 6303 Barfield Road Atlanta, GA 30328 -----BEGIN PGP SIGNATURE----- Version: PGP 7.0.4 iQA/AwUBPENTAZG41ROSQPncEQK38QCgy/M/pqY1Xca3j+j4tPVIRZN1jRoAoLT9 iUQ0zGMry9q/EHPIs6TawOCd =1E3j -----END PGP SIGNATURE-----
