[PATCH 5/6 RFC] netfilter: add audit operation field
Paul Moore
paul at paul-moore.com
Fri Jun 2 15:28:25 UTC 2017
On Thu, May 18, 2017 at 1:21 PM, Richard Guy Briggs <rgb at redhat.com> wrote:
> Add the operation performed (register or replace) to the NETFILTER_CFG and
> NETFILTER_CFGSOLO records.
>
> Here are sample records for accompanied:
> type=NETFILTER_CFG msg=audit(1494981627.248:9764): op=replace family=7 table=broute entries=0
>
> and unaccompanied cases:
> type=UNKNOWN[1331] msg=audit(1494815998.178:167): auid=4294967295 uid=0 gid=0 ses=4294967295 subj=system_u:system_r:iptables_t:s0 pid=598 comm="ip6tables-resto" exe="/usr/sbin/xtables-multi" op=replace family=10 table=filter entries=4
A reminder to add new fields to the end of the record.
> See: https://github.com/linux-audit/audit-kernel/issues/25
>
> Signed-off-by: Richard Guy Briggs <rgb at redhat.com>
> ---
> net/bridge/netfilter/ebtables.c | 8 ++++----
> net/netfilter/x_tables.c | 5 +++--
> 2 files changed, 7 insertions(+), 6 deletions(-)
>
> diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
> index 7499232..59b63a8 100644
> --- a/net/bridge/netfilter/ebtables.c
> +++ b/net/bridge/netfilter/ebtables.c
> @@ -1075,7 +1075,7 @@ static int do_replace_finish(struct net *net, struct ebt_replace *repl,
> ab = audit_log_start(current->audit_context, GFP_KERNEL,
> AUDIT_NETFILTER_CFG);
> if (ab) {
> - audit_log_format(ab, "family=%u table=%s entries=%u",
> + audit_log_format(ab, "op=replace family=%u table=%s entries=%u",
> AF_BRIDGE, repl->name,
> repl->nentries);
> audit_log_end(ab);
> @@ -1085,7 +1085,7 @@ static int do_replace_finish(struct net *net, struct ebt_replace *repl,
> AUDIT_NETFILTER_CFGSOLO);
> if (ab) {
> audit_log_task(ab);
> - audit_log_format(ab, " family=%u table=%s entries=%u",
> + audit_log_format(ab, " op=replace family=%u table=%s entries=%u",
> AF_BRIDGE, repl->name,
> repl->nentries);
> audit_log_end(ab);
> @@ -1259,7 +1259,7 @@ struct ebt_table * ebt_register_table(struct net *net,
> ab = audit_log_start(current->audit_context, GFP_KERNEL,
> AUDIT_NETFILTER_CFG);
> if (ab) {
> - audit_log_format(ab, "family=%u table=%s entries=%u",
> + audit_log_format(ab, "op=register family=%u table=%s entries=%u",
> AF_BRIDGE, repl->name,
> repl->nentries);
> audit_log_end(ab);
> @@ -1269,7 +1269,7 @@ struct ebt_table * ebt_register_table(struct net *net,
> AUDIT_NETFILTER_CFGSOLO);
> if (ab) {
> audit_log_task(ab);
> - audit_log_format(ab, " family=%u table=%s entries=%u",
> + audit_log_format(ab, " op=register family=%u table=%s entries=%u",
> AF_BRIDGE, repl->name,
> repl->nentries);
> audit_log_end(ab);
> diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c
> index 8d28fff..395ebd3 100644
> --- a/net/netfilter/x_tables.c
> +++ b/net/netfilter/x_tables.c
> @@ -1199,7 +1199,8 @@ struct xt_table_info *xt_replace_table(struct xt_table *table,
> ab = audit_log_start(current->audit_context, GFP_KERNEL,
> AUDIT_NETFILTER_CFG);
> if (ab) {
> - audit_log_format(ab, "family=%u table=%s entries=%u",
> + audit_log_format(ab, "op=%s family=%u table=%s entries=%u",
> + private->number ? "replace" : "register",
> table->af, table->name,
> private->number);
> audit_log_end(ab);
> @@ -1209,7 +1210,7 @@ struct xt_table_info *xt_replace_table(struct xt_table *table,
> AUDIT_NETFILTER_CFGSOLO);
> if (ab) {
> audit_log_task(ab);
> - audit_log_format(ab, " family=%u table=%s entries=%u",
> + audit_log_format(ab, " op=replace family=%u table=%s entries=%u",
> table->af, table->name,
> private->number);
> audit_log_end(ab);
> --
> 1.7.1
--
paul moore
www.paul-moore.com
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