Topic: ZIP and RAR contents blocking
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======== Required information ====
- iRedMail version (check /etc/iredmail-release): 0.9.0
- Linux/BSD distribution name and version: Centos 6.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): PGSQL
- Web server (Apache or Nginx):Apache
- Manage mail accounts with iRedAdmin-Pro? v1.5.2 (PostgreSQL)
- Related log if you're reporting an issue:
====
hi,
how do i block the following content files inside archived zip & rar files
Zipped - ZIP
1. with .js
2. with .chm
RAR - required to block
1. Rar with .exe
2. rar with .chm
3. rar with .js
below is my current setting of 'amavisd.conf'
$banned_filename_re = new_RE(
### BLOCKED ANYWHERE
# qr'^UNDECIPHERABLE$', # is or contains any undecipherable components
qr'^\.(exe-ms|dll)$', # banned file(1) types, rudimentary
qr'^\.(exe|lha|cab|dll)$', # banned file(1) types
### BLOCK THE FOLLOWING, EXCEPT WITHIN UNIX ARCHIVES:
# [ qr'^\.(gz|bz2)$' => 0 ], # allow any in gzip or bzip2
# [ qr'^\.(rpm|cpio|tar)$' => 0 ], # allow any in Unix-type archives
qr'.\.(pif|scr)$'i, # banned extensions - rudimentary
# qr'^\.zip$', # block zip type
### BLOCK THE FOLLOWING, EXCEPT WITHIN ARCHIVES:
# [ qr'^\.(zip|rar|arc|arj|zoo)$'=> 0 ], # allow any within these archives
# [ qr'^\.(zip|rar|arc|arj|zoo)$'=> 1 ], # block any within these archives
qr'^application/x-msdownload$'i, # block these MIME types
qr'^application/x-msdos-program$'i,
qr'^application/hta$'i,
# qr'^message/partial$'i, # rfc2046 MIME type
# qr'^message/external-body$'i, # rfc2046 MIME type
# qr'^(application/x-msmetafile|image/x-wmf)$'i, # Windows Metafile MIME type
# qr'^\.wmf$', # Windows Metafile file(1) type
# block certain double extensions in filenames
qr'^(?!cid:).*\.[^./]*[A-Za-z][^./]*\.\s*(exe|vbs|pif|scr|bat|cmd|com|cpl|dll)[.\s]*$'i,
# qr'\{[0-9a-f]{8}(-[0-9a-f]{4}){3}-[0-9a-f]{12}\}?'i, # Class ID CLSID, strict
# qr'\{[0-9a-z]{4,}(-[0-9a-z]{4,}){0,7}\}?'i, # Class ID extension CLSID, loose
qr'.\.(exe|vbs|pif|scr|cpl)$'i, # banned extension - basic
# qr'.\.(exe|vbs|pif|scr|cpl|bat|cmd|com)$'i, # banned extension - basic+cmd
qr'.\.(ade|adp|app|bas|bat|cab|chm|cmd|com|cpl|crt|exe|fxp|grp|hlp|hta|
inf|ini|ins|isp|js|jse|lib|lnk|mda|mdb|mde|mdt|mdw|mdz|msc|msi|
msp|mst|ocx|ops|pcd|pif|prg|reg|scr|sct|shb|shs|sys|tar|vb|vbe|vbs|vxd|
wsc|wsf|wsh)$'ix, # banned extensions - long
qr'.\.(asd|asf|asx|url|vcs|wmd|wmz)$'i, # consider also
qr'.\.(ani|cur|ico)$'i, # banned cursors and icons filename
qr'^\.ani$', # banned animated cursor file(1) type
qr'.\.(mim|b64|bhx|hqx|xxe|uu|uue)$'i, # banned extension - WinZip vulnerab.
);
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