[SOLVED] Block encrypted compressed files and not encrypted PDF

[abzsol]

Hello guys,

is it possible to block just encrypted compressed and not encrypted PDF?
Lots of viruses come from ZIP files with password, not from PDFs.
Thanks in advance.

Ciao!

 

[Stoiko Ivanov]

Hello guys,

is it possible to block just encrypted compressed and not encrypted PDF?
Lots of viruses come from ZIP files with password, not from PDFs.
Thanks in advance.

Without trying it out - it seems that clamav (which is used to detect encrypted documents/archives) seems to have two options (from `man clamd.conf`):

AlertEncrypted BOOL
Alert on encrypted archives and documents (encrypted .zip, .7zip, .rar, .pdf).
Default: no

AlertEncryptedArchive BOOL
Alert on encrypted archives (encrypted .zip, .7zip, .rar).
Default: no

AlertEncryptedDoc BOOL
Alert on encrypted documents (encrypted .pdf).
Default: no

you could try replacing AlertEncrypted with AlertEncryptedArchive in the clamd.conf.in template:
https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#pmgconfig_template_engine

please share if this worked for you

 

[abzsol]

Without trying it out - it seems that clamav (which is used to detect encrypted documents/archives) seems to have two options (from `man clamd.conf`):



you could try replacing AlertEncrypted with AlertEncryptedArchive in the clamd.conf.in template:
https://pmg.proxmox.com/pmg-docs/pmg-admin-guide.html#pmgconfig_template_engine

please share if this worked for you

Hello @Stoiko Ivanov
sorry but I don't get what I've to try/do
Could you give me more infos please?

Thanks!

 

[Stoiko Ivanov]

sorry but I don't get what I've to try/do

as written in the docs I linked:
* create /etc/pmg/templates
* copy /var/lib/pmg/templates/clamd.conf.in to /etc/pmg/templates

change:

[% IF pmg.clamav.archiveblockencrypted %]                                                           
AlertEncrypted true                                                                                 
[% ELSE %]                                                                                          
AlertEncrypted false                                                                                
[% END %]

to

AlertEncryptedArchive true

* run pmgconfig sync -restart 1
* check the journal that clamd has restarted

test with an encrypted pdf (and an encrypted zip)

 

[abzsol]

Thanks @Stoiko Ivanov, it's working fine.
Just tested.

Thanks so much!

 

[Stoiko Ivanov]

Thanks for reporting back! - this will certainly help others with a similar problem to solve