hitting amanda client port with openvas causes 100% load on host machine

Stefan Bauer <[email protected]> Tue, 16 Jan 2018 13:13:37 +0100
Newsgroups gmane.comp.archivers.amanda.devel
Message-ID <[email protected]>
Hi,

while scanning our network with openvas (http://www.openvas.org/index.de.html <http://www.openvas.org/index.de.html> ) we noticed after hitting our server on the amanda port (10080) that this causes a 100% cpu load on all cores. 

After this, 5 amanda procsses are up and running.



We used the virtual machine image from openvas.org without any special tunning. Just enter the server ip and hit quick-start.



Only a kill of the amanda daemon solves the problem. Looks clearly like a bug/security issue as it renders the server almost unusable.



ii  amanda-client  1:3.3.6-4.1  amd64        Advanced Maryland Automatic Network Disk Archiver (Client)
ii  amanda-common  1:3.3.6-4.1  amd64        Advanced Maryland Automatic Network Disk Archiver (Libs)
root@host01:/home/user# more /etc/debian_version 
stretch/sid



Amanda is started via xinetd



root@host01:/home/user# more /etc/xinetd.d/amanda

service amanda
{
        disable         = no
        flags           = IPv4
        socket_type     = stream
        protocol        = tcp
        wait            = no
        user            = backup
        group           = disk
        groups          = yes
        server          = /usr/lib/amanda/amandad
        server_args     = -auth=bsdtcp amdump amindexd amidxtaped
}



Any help is greatly appreciated.