[clamav-users] Malformed database issue

Thomas McCourt (tmccourt) tmccourt at cisco.com
Sun Jul 15 19:36:34 EDT 2018

Hey Jay,

Not sure which it is referring to db wise, but deleting main.cvd, daily, bytecode and mirror.dat should fix it after another freshclam.

Thank you,

Tom M 

On 7/15/18, 5:05 PM, "clamav-users on behalf of Jay Hart" <clamav-users-bounces at lists.clamav.net on behalf of jhart at kevla.org> wrote:

    Hello and good afternoon,
    Yessterday on a Centos 6.10 server I ran the software updater application which indicated 134
    packages needed to be updated, one of which was Clamav.
    The updater ran fine and the machine was rebooted. Upon reboot Clamav failed to run. This was due
    to the deprecated option "AllowSupplementaryGroups" being enabled. Once I disabled this Clamav
    would run, but I also was receiving a second error, which I have not been able to resolve.
    It occurs when Freshclam queries the server for updated virus database files. I have enabled
    logging for libclamav when freshclam runs to provide additional details.
    ClamAV update process started at Sun Jul 15 16:27:39 2018
    Using IPv6 aware code
    Querying current.cvd.clamav.net
    TTL: 611
    Software version from DNS: 0.100.1
    WARNING: Your ClamAV installation is OUTDATED!
    WARNING: Local version: 0.100.0 Recommended version: 0.100.1
    DON'T PANIC! Read https://www.clamav.net/documents/upgrading-clamav
    Retrieving http://db.local.clamav.net/main.cvd
    Trying to download http://db.local.clamav.net/main.cvd (IP:
    Downloading main.cvd [100%]
    LibClamAV debug: Initialized 0.100.0 engine
    LibClamAV debug: in cli_cvdload()
    LibClamAV debug: MD5(.tar.gz) = 57462fd73f1cfdb356b9dca66da2b732
    LibClamAV debug: cli_versig: Decoded signature: 57462fd73f1cfdb356b9dca66da2b732
    LibClamAV debug: cli_versig: Digital signature is correct.
    LibClamAV debug: in cli_tgzload()
    LibClamAV debug: in cli_tgzload_cleanup()
    WARNING: [LibClamAV] cli_cvdload: Corrupted CVD header
    LibClamAV debug: Cleaning up phishcheck
    LibClamAV debug: Phishcheck cleaned up
    ERROR: Verification: Malformed database
    Querying main.
    Giving up on db.local.clamav.net...
    Update failed. Your network may be down or none of the mirrors listed in /etc/freshclam.conf is
    working. Check https://www.clamav.net/documents/official-mirror-faq for possible reasons.
    NOTE: I just copied of the five tries for updating, they all show saw situation.
    I am pointing to db.us.clamav.net as the country code.
    Any idea how to resolve this?
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