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www.waraxe.us Forum Index -> All other security holes -> Multiple Antivirus Scanners DoS attack 16k = 1 terabyte
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Multiple Antivirus Scanners DoS attack 16k = 1 terabyte
PostPosted: Sun Jun 20, 2004 8:04 pm Reply with quote
LINUX
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Joined: May 24, 2004
Posts: 404
Location: Caiman




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 Twisted Evil

Spanish version www.sosvulnerable.com.ar
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PostPosted: Sun Jun 20, 2004 10:02 pm Reply with quote
vocal
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Joined: Jun 13, 2004
Posts: 18




I love this!!

Thx Smile
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PostPosted: Sun Jun 20, 2004 10:15 pm Reply with quote
SteX
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Joined: May 18, 2004
Posts: 181
Location: Serbia




Hehe..but how to compress 1 TB to 10 KB..(2 small HD)
Laughing Laughing

_________________

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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PostPosted: Mon Jun 21, 2004 3:29 am Reply with quote
LINUX
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Joined: May 24, 2004
Posts: 404
Location: Caiman




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 Exclamation
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PostPosted: Mon Jun 21, 2004 4:21 pm Reply with quote
vocal
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Joined: Jun 13, 2004
Posts: 18




http://www.skaro.net/maverick/frames.html?utils_zipfix.html

Here 's a nice tip on how to manually concatenate zip files.
Now you can easily create 4TB files Wink
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Multiple Antivirus Scanners DoS attack 16k = 1 terabyte
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