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IT Security and Insecurity Portal |
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Multiple Antivirus Scanners DoS attack 16k = 1 terabyte |
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 Posted: Sun Jun 20, 2004 8:04 pm |
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| LINUX |
| Moderator |
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| Joined: May 24, 2004 |
| Posts: 404 |
| Location: Caiman |
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Multiple Antivirus Scanners DoS attack
jejejej D0s attack your victim Combining social engineer and this file his victim is exposed to an attack
-- [Vulnerable Products] ---
Only tested on...
* Norton Antivirus 2002
* Norton Antivirus 2003
* Mcafee VirusScan 6
* Network Associates (McAfee) VirusScan Enterprise 7.1
* PC-Cillin 11.13
*Norton AV Corporate Ed. (version 7.60.926)
*Protector Plus
*MacAfee uvscan scan for Linux (4.3.20)
* Rav Antivirus online Scanner [Couldn't complete the scan...]
* Windows Xp default ZIP manager [report's wrong size of compress ZIP files.]
There has been multiple reports,
*Panda Antivirus
*DrWeb (http://www.drweb.ru/)
*AVG v7.0.251
Are vulnerable
--- [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. Moreover, If you download such archives from an internet location, or copy/paste such files from a destination. Those Vulnerable "Antivirus Software?s" with their auto-protect engines active, may also trigger a DoS. An attacker can create a big file,
dd if=/dev/zero of=/crash bs=9999
and compress the file. [Well there are ways to squeeze a terabyte of such data to few kilobytes]
An attacker could construct such archive and if send to a vulnerable AV gateway, multiple of times may result in system un-stability, high CPU use for long time, system hang/crash etc...
Note: This is just a simple proof of concept, smaller archive >10kb can be created that contain a terabyte of data...
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.
Direct download
www.sosvulnerable.com.ar/down/test.zip 
Spanish version www.sosvulnerable.com.ar |
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| Posted: Sun Jun 20, 2004 10:02 pm |
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| vocal |
| Regular user |
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| Joined: Jun 13, 2004 |
| Posts: 18 |
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I love this!!
Thx  |
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| Posted: Sun Jun 20, 2004 10:15 pm |
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| SteX |
| Advanced user |
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| Joined: May 18, 2004 |
| Posts: 181 |
| Location: Serbia |
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Hehe..but how to compress 1 TB to 10 KB..(2 small HD)
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_________________
We would change the world, but God won't give us the sourcecode...
....Watch the master. Follow the master. Be the master....
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| Posted: Mon Jun 21, 2004 3:29 am |
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| LINUX |
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| Joined: May 24, 2004 |
| Posts: 404 |
| Location: Caiman |
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kapersky antivirus 5 detects like virus pump to it of archives
zone alarm 5 whit antivirus it does not detect it
forum member test decompress everything  |
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| Posted: Mon Jun 21, 2004 4:21 pm |
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| vocal |
| Regular user |
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| Joined: Jun 13, 2004 |
| Posts: 18 |
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