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List:       amavis-bugs
Subject:    [AMaViS-bugs] AMaViS Security Announcement:  script viruses (i.e. vbs worms) may
From:       Rainer Link <link () suse ! de>
Date:       2000-12-11 21:04:35
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===========================================================================
                   AMaViS Security Announcement

Date:                   12/11/2000
affected  version(s):   AMaViS-Perl below AMaViS-Perl-10
Vulnerability Type:     script viruses (i.e. vbs worms) may not
			be detected
Priority:               urgent
Solution:               upgrade to AMaViS-Perl-10
Author:                 Lars Hecking <lhecking@nmrc.ie>
			Rainer Link <link@suse.de>
Advisory ID:            ASA-2000-5

- ---------------------------------------------------------------------------

1. Problem description
AMaViS-Perl uses a Perl module to decode (uudecode/xxdecode or binhex) every 
file which is recognised by file(1) as ASCII, text, uuencode, xxencode or 
binhex. If a (ASCII, text) file is _not_ encoded, the resulting file is 
zero bytes long and the original file will be deleted as usual
as AMaViS-Perl fails to detect this error case. Therefore the
virus itself will be deleted.



2. Impact
Obvious. This bug can let script viruses go undetected.  


3. Solution
Upgrade to AMaViS-Perl-10. 


4. Acknowledgement
This bug was discovered accidentally by Lars Hecking.


5. References
https://sourceforge.net/projects/amavis/
http://www.amavis.org/


6. Revision History
12/11/2000: initial release

===========================================================================

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-- 
Rainer Link  |                SuSE - The Linux Experts
link@suse.de |    Developer of A Mail Virus Scanner (amavis.org)
www.suse.de  | Founder OpenAntiVirus Project (www.openantivirus.org)

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