Bugtraq mailing list archives
RE: Multiple Antivirus Scanners DoS attack.
From: "Bo Rasmussen" <brr () cadesign dk>
Date: Tue, 15 Jun 2004 10:10:36 +0200
Hi, Just tried with clamscan and clamdscan v.0.71 on a OpenBSD 3.5, with these signatures: ClamAV update process started at Tue Jun 15 09:13:49 2004 main.cvd is up to date (version: 23, sigs: 21096, f-level: 2, builder: ddm) daily.cvd updated (version: 357, sigs: 866, f-level: 2, builder: ccordes) Database updated (21962 signatures) from database.clamav.net (152.66.249.132). mail# clamscan SERVER_dwn.zip SERVER_dwn.zip: Eicar-Test-Signature FOUND ----------- SCAN SUMMARY ----------- Known viruses: 21962 Scanned directories: 0 Scanned files: 1 Infected files: 1 Data scanned: 20.13 MB I/O buffer size: 131072 bytes Time: 9.006 sec (0 m 9 s) mail# mail# clamdscan SERVER_dwn.zip /var/amavis/SERVER_dwn.zip: Eicar-Test-Signature FOUND ----------- SCAN SUMMARY ----------- Infected files: 1 Time: 8.053 sec (0 m 8 s) mail# No problems whatsoever. Regards Bo Rising Rasmussen it/security consultant brr () cadesign dk
-----Original Message----- From: bipin gautam [mailto:visitbipin () hotmail com] Sent: Monday, June 14, 2004 4:39 PM To: cert () cert org; bugtraq () securityfocus com Cc: wk () c4i org; vulndiscuss () vulnwatch org; vulndiscuss-owner () vulnwatch org Subject: Multiple Antivirus Scanners DoS attack. Multiple Antivirus Scanners DoS attack. --- [Vulnerable Products] --- Only tested on... * Norton Antivirus 2002 * Norton Antivirus 2003 * Mcafee VirusScan 6 * Network Associates (McAfee) VirusScan Enterprise 7.1 * Windows Xp default ZIP manager [report's wrong size of compress ZIP files.] There has been multiple reports [Unconfirmed] *F-Prot 4.4.2 for Linux *Panda Antivirus Are vulnerable. Risk Impact: Medium --- [Details] --- While having a manual scan of compressed files; several Antivirus, Trojan, Spy ware scanners suffer a DoS attack if the software tries to completely extract the archive and scan its content for a hostile file. --- [Proof of Concept] --- Please download this file. http://www.geocities.com/visitbipin/SERVER_dwn.zip Moreover it's not safe to set automatically 'Quarantine/delete' option set for your AV scanner as it may try to Quarantine the virus by extracting the archive. ----------- Bipin Gautam http://www.geocities.com/visitbipin/ Disclaimer: The information in the advisory is believed to be accurate at the time of printing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect or consequential loss or damage arising from use of, or reliance on this information. _________________________________________________________________ It's fast, it's easy and it's free. Get MSN Messenger today! http://www.msn.co.uk/messenger
Current thread:
- Multiple Antivirus Scanners DoS attack. bipin gautam (Jun 14)
- Re: Multiple Antivirus Scanners DoS attack. Ethy H. Brito (Jun 14)
- Re: Multiple Antivirus Scanners DoS attack. Yosif Sleman (Jun 21)
- Re: Multiple Antivirus Scanners DoS attack. Tucker (Jun 16)
- Re: Multiple Antivirus Scanners DoS attack. Jacek Osiecki (Jun 18)
- Re: Multiple Antivirus Scanners DoS attack. Jason Haar (Jun 21)
- Re: Multiple Antivirus Scanners DoS attack. Jacek Osiecki (Jun 18)
- <Possible follow-ups>
- RE: Multiple Antivirus Scanners DoS attack. Messer, Jon (Jun 15)
- RE: Multiple Antivirus Scanners DoS attack. Bo Rasmussen (Jun 15)
- RE: Multiple Antivirus Scanners DoS attack. Brian Christmas (Jun 16)
- Re: Multiple Antivirus Scanners DoS attack. jspanitz (Jun 16)
- Re: Multiple Antivirus Scanners DoS attack. Ethy H. Brito (Jun 14)