On Tue, 29 Aug 2023, Ray wrote:
my company is considering moving away from ClamAV. They claim there's a file
size limitation for scanned files in ClamAV that a commercial product could
overcome.
Is that true? I found this comment on an Ubuntu forum, which is not too old.
It claims there is a hard 4 GByte limit:
https://askubuntu.com/questions/1423199/clamav-file-size-restrictions
I need to be able to scan files up to 5 GBytes, with the possibility that
this limit will later be pushed higher (like 8 or 10 GBytes)
a) Is ClamAV really unable to do this? Is there really a hard 4 GByte size
limitation?
b) If a) is correct, are there any plans to overcome this size limitation in
Yes, there really is a hard limit.
I may not remember correctly, but I think that for some file types
the limit may even be 2GB not 4GB.
From v1.2.0 (released this week) this limit no longer applies to
archives and disk images, such as .zip and .iso files,
though it still applies to the ordinary files inside them.
I understand that removing this limit is planned, but I am not privy
to the priorities of the ClamAV team.
Do you have experience of large infected files ?
I can see that there could be a macro virus in a large spreadsheet
but IIRC some virus checkers only look at the first so much of a file
since malware deeper into the file cannot (or could not) be executed.
--
Andrew C. Aitchison Kendal, UK
[email protected]
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