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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 INTERNET THREAT UPDATE for 03-18-2002 ISS X-Force Internet Threat Intelligence Center www.iss.net - Click on AlertCon logo 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. ZLIB: There is a vulnerability in the zlib/libz library decompression routines in version 1.1.3 and earlier. Although there are no reported exploits in the wild, this vulnerability potentially affects both Linux and Microsoft Operating Systems; databases such as Oracle; encryption software; and a long list of other affected products. Check your vendor for information and solutions. SNMP UPDATE: Microsoft has just re-published a patch for the English and German versions of NT 4.0. Users need to install this updated patch. Currently, there are no exploits in the wild. We remind all users to visit their vendor's web sites frequently for updated remedial information / patches for products in use. VIRUSES/WORMS: WORM_PORKIS.A is out. This Internet worm propagates via Microsoft Outlook by sending email with itself as an attachment, Porkis.exe, to all addresses listed in the infected user's Windows Address Book (WAB). ******************************************** RECOMMENDATIONS ******************************************** zlib: Vendors / code writers should upgrade their use of zlib to version 1.1.4. Users need to check with their vendors for impact of zlib on the product, and if necessary, update their product when a patch becomes available. SNMP: Check your vendor for new or updated patches regarding this vulnerability. https://gtoc.iss.net/snmpvendor.pdf For information on the WORM_PORKIS>A, please see: <http://www.antivirus.com/vinfo/virusencyclo/defau lt5.asp?VName=WORM_PORKIS.A> Information regarding viruses and worms please see: <https://gtoc.iss.net/viruses.php> ******************************************** FACTOID: Businesses lose an estimated $10 billion or more annually due to security breaches in their computer systems, according to the Computer Security Institute. ******************************************** ATTACK SIGNATURE RANKING - global IDS, midnight - midnight, previous Day, % of total ******************************************** Protocol Decode 47.64% Unauthorized Access Attempt 37.06% Denial Of Service 06.96% Suspicious Activity 05.39% Pre-Attack Probe 02.94% Back Door 00.01% ******************************************** TOP TEN ATTACK DESTINATION PORTS - global IDS, midnight - midnight, previous day, % of top ten (ports found at) http://www.networkice.com/Advice/Exploits/Ports/de fault.htm ******************************************** 80 (http) 74.16% 161 (SNMP) 12.87% 162 (SNMPTrap) 03.63% 23 (telnet) 02.23% 25 (smtp) 01.88% 21 (ftp) 01.53% 22 (ssh) 01.18% 1500 (vlsi-lm) 01.06% 139 (NetBIOS) 00.89% 113 (identd/auth) 00.58% ******************************************** 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. You can download the public key from MIT's PGP key server and PGP.com's key server. 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/AwUBPJX9ipG41ROSQPncEQLW4wCfUDMuB9fDVHcboy1M3ZKCko4YdBgAoMGr QzDzTPIvhuGBCKVs6RZSuDln =lkUZ -----END PGP SIGNATURE-----
