Vulnerabilities To Bind-libs Bind-utils – Possible To Remove These On Webservers

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I think the subject says it all. We don’t run named. It seems there are chronic issues with bind. Can these packages be removed?

We locally authenticate. I see this:

Removing for dependencies:
bind-utils ipa-client sssd sssd-ad sssd-ipa

We shouldn’t need any of that with local authentication (/etc passwd and /etc/shadow) right?

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3 thoughts on - Vulnerabilities To Bind-libs Bind-utils – Possible To Remove These On Webservers

  • Peda, Allan (NYC-GIS) wrote:

    Are you running sssd? Are you connected to the AD?

    mark (we do, and we are)

  • I just tried out removal of bind-utils on a soon to be retired machine. It seems fine with the caveat that we lose /bin/host and /bin/dig

    Perhaps a perl script might suffice to emulate ‘host’ on machines that might need the occasional networking debug session. Just typed this up, so FWIW:

    use Net::DNS;

    my $res = Net::DNS::Resolver->new();
    my $sought = $ARGV[0];
    my $a_query = $res->search($sought);
    if ($a_query) {
    foreach my $rr ($a_query->answer) {
    if( $rr->type eq ‘A’ ){
    printf(“%s has address %s\n”, $sought, $rr->address);
    } elsif( $rr->type eq ‘CNAME’ ){
    printf(“%s is an alias for %s\n”, $sought, $rr->cname);
    $sought = $rr->cname;
    }
    }
    } else {
    warn “Unable to obtain a record for $ARGV[0]: “, $res->errorstring, “\n”;
    }

     > I think the subject says it all. We don’t run named. It seems there are
    > chronic issues with bind. Can these packages be removed?
    >
    > We locally authenticate. I see this:
    >
    > Removing for dependencies:
    > bind-utils ipa-client sssd sssd-ad sssd-ipa
    >
    > We shouldn’t need any of that with local authentication (/etc passwd and
    > /etc/shadow) right?

    Are you running sssd? Are you connected to the AD?

    mark (we do, and we are)