ClamAV

Clam Antivirus

Virus scanner for mail and files.

• Homepage
• clamav-milter
• Phishing and Scam Signatures for ClamAV
• Unofficial sigs
• https://wiki.archlinux.org/index.php/ClamAV

On Access Scanning

Errors and messages

Excluded UID

Because it's root?

A handy script for adding more goodies

#!/usr/local/bin/bash
#extra signatures to catch spam and phishing
#or look at http://www.sanesecurity.com/
LOCATION=/var/db/clamav
GUNZIP=/usr/bin/gunzip
WGET=/usr/local/bin/wget
#and now the script itself
cd $LOCATION || exit -1
$WGET --timestamping http://ftp.tiscali.nl/sanesecurity/phish.ndb.gz && ${GUNZIP} -f phish.ndb.gz
$WGET --timestamping http://ftp.tiscali.nl/sanesecurity/scam.ndb.gz && ${GUNZIP} -f scam.ndb.gz
$WGET --timestamping http://download.mirror.msrbl.com/MSRBL-SPAM.ndb
$WGET --timestamping  http://download.mirror.msrbl.com/MSRBL-Images.hdb
$WGET -O - http://www.malware.com.br/cgi/submit?action=list_clamav > mbl.db
/usr/sbin/chown clamav:clamav *
killall -HUP clamd

FAQ

clamdscan

Can't open file or directory ERROR

Could be apparmor, then

apt-get install apparmor-utils
aa-complain /usr/sbin/clamd

This would make it complain instead of deny

ERROR: Can't send to clamd: Broken pipe

grep -r LocalSocket /etc/clam*

 

Amavis not finding socket clamd.ctl

Means clamd is busy handling the queue after a powre failure or such, the socket won't be created before it's done.

 

INetMsg.SpamDomain-xxx

That's from sanesecurity.net

Milter (clmilter): local socket name /var/run/clamav/clmilter.sock unsafe

Usually means something like clamd not running.

 

LibClamAV Warning: [Bytecode JIT]: Bytecode run timed out, timeout flag set

Try --bytecode-timeout=120000

LibClamAV Warning: Bytecode run timed out in interpreter after 5000 opcodes

--bytecode-timeout=N

 

Ignoring mirror x.x.x.x (due to previous errors)

try removing mirrors.dat and daily.cvd

 

LibClamAV Error: CRITICAL: fmap() failed

haha yeah, good luck

 

Can't allocate memory ERROR

Some file too big?

 

Exclude dir

clamscan --exclude-dir='/foo/b.*r'

 

wildcards?

scan.conf: ExcludePath /foo/*/bar ? REGEX suggests using ^/foo/.*/bar/

WARNING: Directory recursion limit reached

Change MaxDirectoryRecursion in clamd configuration, default is 15

Whitelisting file

sigtool --sha1 somefile >> /var/lib/clamav/whitelist.sfp

and restart clamd if that's used

Freshclam

Freshclam: ERROR: getpatch: Can't download daily-26337.cdiff from db.nl.clamav.net

Probably an outdated freshclam

ERROR: downloadFile: Unexpected response (403) from https://database.clamav.net/daily.cvd

If you are receiving a 403, 503, or 1020 error codes when downloading from Cloudflare, then you are either explicitly blocked, using an EOL'ed version of ClamAV or you are downloading incorrectly.