From: Richard Guy Briggs <rgb@redhat.com> To: Linux-Audit Mailing List <linux-audit@redhat.com>, LKML <linux-kernel@vger.kernel.org>, netfilter-devel@vger.kernel.org Cc: Paul Moore <paul@paul-moore.com>, sgrubb@redhat.com, omosnace@redhat.com, fw@strlen.de, twoerner@redhat.com, eparis@parisplace.org, tgraf@infradead.org, Richard Guy Briggs <rgb@redhat.com> Subject: [PATCH ghak124 v3] audit: log nftables configuration change events Date: Thu, 4 Jun 2020 09:20:49 -0400 [thread overview] Message-ID: <f9da8b5dbf2396b621c77c17b5b1123be5aa484e.1591275439.git.rgb@redhat.com> (raw) iptables, ip6tables, arptables and ebtables table registration, replacement and unregistration configuration events are logged for the native (legacy) iptables setsockopt api, but not for the nftables netlink api which is used by the nft-variant of iptables in addition to nftables itself. Add calls to log the configuration actions in the nftables netlink api. This uses the same NETFILTER_CFG record format but overloads the table field. type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.878:162) : table=?:0;?:0 family=unspecified entries=2 op=nft_register_gen pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.878:162) : table=firewalld:1;?:0 family=inet entries=0 op=nft_register_table pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.911:163) : table=firewalld:1;filter_FORWARD:85 family=inet entries=8 op=nft_register_chain pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.911:163) : table=firewalld:1;filter_FORWARD:85 family=inet entries=101 op=nft_register_rule pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.911:163) : table=firewalld:1;__set0:87 family=inet entries=87 op=nft_register_setelem pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.911:163) : table=firewalld:1;__set0:87 family=inet entries=0 op=nft_register_set pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld For further information please see issue https://github.com/linux-audit/audit-kernel/issues/124 Signed-off-by: Richard Guy Briggs <rgb@redhat.com> --- Changelog: v3: - inline message type rather than table v2: - differentiate between xtables and nftables - add set, setelem, obj, flowtable, gen - use nentries field as appropriate per type - overload the "tables" field with table handle and chain/set/flowtable include/linux/audit.h | 18 ++++++++ kernel/auditsc.c | 24 ++++++++-- net/netfilter/nf_tables_api.c | 103 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 142 insertions(+), 3 deletions(-) diff --git a/include/linux/audit.h b/include/linux/audit.h index 3fcd9ee49734..604ede630580 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -12,6 +12,7 @@ #include <linux/sched.h> #include <linux/ptrace.h> #include <uapi/linux/audit.h> +#include <uapi/linux/netfilter/nf_tables.h> #define AUDIT_INO_UNSET ((unsigned long)-1) #define AUDIT_DEV_UNSET ((dev_t)-1) @@ -98,6 +99,23 @@ enum audit_nfcfgop { AUDIT_XT_OP_REGISTER, AUDIT_XT_OP_REPLACE, AUDIT_XT_OP_UNREGISTER, + AUDIT_NFT_OP_TABLE_REGISTER, + AUDIT_NFT_OP_TABLE_UNREGISTER, + AUDIT_NFT_OP_CHAIN_REGISTER, + AUDIT_NFT_OP_CHAIN_UNREGISTER, + AUDIT_NFT_OP_RULE_REGISTER, + AUDIT_NFT_OP_RULE_UNREGISTER, + AUDIT_NFT_OP_SET_REGISTER, + AUDIT_NFT_OP_SET_UNREGISTER, + AUDIT_NFT_OP_SETELEM_REGISTER, + AUDIT_NFT_OP_SETELEM_UNREGISTER, + AUDIT_NFT_OP_GEN_REGISTER, + AUDIT_NFT_OP_OBJ_REGISTER, + AUDIT_NFT_OP_OBJ_UNREGISTER, + AUDIT_NFT_OP_OBJ_RESET, + AUDIT_NFT_OP_FLOWTABLE_REGISTER, + AUDIT_NFT_OP_FLOWTABLE_UNREGISTER, + AUDIT_NFT_OP_INVALID, }; extern int is_audit_feature_set(int which); diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 468a23390457..3a9100e95fda 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -75,6 +75,7 @@ #include <linux/uaccess.h> #include <linux/fsnotify_backend.h> #include <uapi/linux/limits.h> +#include <uapi/linux/netfilter/nf_tables.h> #include "audit.h" @@ -136,9 +137,26 @@ struct audit_nfcfgop_tab { }; static const struct audit_nfcfgop_tab audit_nfcfgs[] = { - { AUDIT_XT_OP_REGISTER, "register" }, - { AUDIT_XT_OP_REPLACE, "replace" }, - { AUDIT_XT_OP_UNREGISTER, "unregister" }, + { AUDIT_XT_OP_REGISTER, "xt_register" }, + { AUDIT_XT_OP_REPLACE, "xt_replace" }, + { AUDIT_XT_OP_UNREGISTER, "xt_unregister" }, + { AUDIT_NFT_OP_TABLE_REGISTER, "nft_register_table" }, + { AUDIT_NFT_OP_TABLE_UNREGISTER, "nft_unregister_table" }, + { AUDIT_NFT_OP_CHAIN_REGISTER, "nft_register_chain" }, + { AUDIT_NFT_OP_CHAIN_UNREGISTER, "nft_unregister_chain" }, + { AUDIT_NFT_OP_RULE_REGISTER, "nft_register_rule" }, + { AUDIT_NFT_OP_RULE_UNREGISTER, "nft_unregister_rule" }, + { AUDIT_NFT_OP_SET_REGISTER, "nft_register_set" }, + { AUDIT_NFT_OP_SET_UNREGISTER, "nft_unregister_set" }, + { AUDIT_NFT_OP_SETELEM_REGISTER, "nft_register_setelem" }, + { AUDIT_NFT_OP_SETELEM_UNREGISTER, "nft_unregister_setelem" }, + { AUDIT_NFT_OP_GEN_REGISTER, "nft_register_gen" }, + { AUDIT_NFT_OP_OBJ_REGISTER, "nft_register_obj" }, + { AUDIT_NFT_OP_OBJ_UNREGISTER, "nft_unregister_obj" }, + { AUDIT_NFT_OP_OBJ_RESET, "nft_reset_obj" }, + { AUDIT_NFT_OP_FLOWTABLE_REGISTER, "nft_register_flowtable" }, + { AUDIT_NFT_OP_FLOWTABLE_UNREGISTER, "nft_unregister_flowtable" }, + { AUDIT_NFT_OP_INVALID, "nft_invalid" }, }; static int audit_match_perm(struct audit_context *ctx, int mask) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 3558e76e2733..b9e7440cc87d 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -12,6 +12,7 @@ #include <linux/netlink.h> #include <linux/vmalloc.h> #include <linux/rhashtable.h> +#include <linux/audit.h> #include <linux/netfilter.h> #include <linux/netfilter/nfnetlink.h> #include <linux/netfilter/nf_tables.h> @@ -693,6 +694,16 @@ static void nf_tables_table_notify(const struct nft_ctx *ctx, int event) { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;?:0", + ctx->table->name, ctx->table->handle); + + audit_log_nfcfg(buf, + ctx->family, + ctx->table->use, + event == NFT_MSG_NEWTABLE ? + AUDIT_NFT_OP_TABLE_REGISTER : + AUDIT_NFT_OP_TABLE_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -1428,6 +1439,17 @@ static void nf_tables_chain_notify(const struct nft_ctx *ctx, int event) { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu", + ctx->table->name, ctx->table->handle, + ctx->chain->name, ctx->chain->handle); + + audit_log_nfcfg(buf, + ctx->family, + ctx->chain->use, + event == NFT_MSG_NEWCHAIN ? + AUDIT_NFT_OP_CHAIN_REGISTER : + AUDIT_NFT_OP_CHAIN_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -2691,6 +2713,17 @@ static void nf_tables_rule_notify(const struct nft_ctx *ctx, { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu", + ctx->table->name, ctx->table->handle, + ctx->chain->name, ctx->chain->handle); + + audit_log_nfcfg(buf, + ctx->family, + rule->handle, + event == NFT_MSG_NEWRULE ? + AUDIT_NFT_OP_RULE_REGISTER : + AUDIT_NFT_OP_RULE_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -3693,6 +3726,17 @@ static void nf_tables_set_notify(const struct nft_ctx *ctx, struct sk_buff *skb; u32 portid = ctx->portid; int err; + char *buf = kasprintf(gfp_flags, "%s:%llu;%s:%llu", + ctx->table->name, ctx->table->handle, + set->name, set->handle); + + audit_log_nfcfg(buf, + ctx->family, + set->field_count, + event == NFT_MSG_NEWSET ? + AUDIT_NFT_OP_SET_REGISTER : + AUDIT_NFT_OP_SET_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -4809,6 +4853,17 @@ static void nf_tables_setelem_notify(const struct nft_ctx *ctx, u32 portid = ctx->portid; struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu", + ctx->table->name, ctx->table->handle, + set->name, set->handle); + + audit_log_nfcfg(buf, + ctx->family, + set->handle, + event == NFT_MSG_NEWSETELEM ? + AUDIT_NFT_OP_SETELEM_REGISTER : + AUDIT_NFT_OP_SETELEM_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES)) return; @@ -5890,6 +5945,19 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) obj->ops->type->type != filter->type) goto cont; + if (reset) { + char *buf = kasprintf(GFP_KERNEL, + "%s:%llu;?:0", + table->name, + table->handle); + + audit_log_nfcfg(buf, + family, + obj->handle, + AUDIT_NFT_OP_OBJ_RESET); + kfree(buf); + } + if (nf_tables_fill_obj_info(skb, net, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NFT_MSG_NEWOBJ, @@ -6000,6 +6068,17 @@ static int nf_tables_getobj(struct net *net, struct sock *nlsk, if (NFNL_MSG_TYPE(nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET) reset = true; + if (reset) { + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;?:0", + table->name, table->handle); + + audit_log_nfcfg(buf, + family, + obj->handle, + AUDIT_NFT_OP_OBJ_RESET); + kfree(buf); + } + err = nf_tables_fill_obj_info(skb2, net, NETLINK_CB(skb).portid, nlh->nlmsg_seq, NFT_MSG_NEWOBJ, 0, family, table, obj, reset); @@ -6075,6 +6154,16 @@ void nft_obj_notify(struct net *net, const struct nft_table *table, { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;?:0", + table->name, table->handle); + + audit_log_nfcfg(buf, + family, + obj->handle, + event == NFT_MSG_NEWOBJ ? + AUDIT_NFT_OP_OBJ_REGISTER : + AUDIT_NFT_OP_OBJ_UNREGISTER); + kfree(buf); if (!report && !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES)) @@ -6701,6 +6790,17 @@ static void nf_tables_flowtable_notify(struct nft_ctx *ctx, { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu", + flowtable->table->name, flowtable->table->handle, + flowtable->name, flowtable->handle); + + audit_log_nfcfg(buf, + ctx->family, + flowtable->hooknum, + event == NFT_MSG_NEWFLOWTABLE ? + AUDIT_NFT_OP_FLOWTABLE_REGISTER : + AUDIT_NFT_OP_FLOWTABLE_UNREGISTER); + kfree(buf); if (ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -6822,6 +6922,9 @@ static void nf_tables_gen_notify(struct net *net, struct sk_buff *skb, struct sk_buff *skb2; int err; + audit_log_nfcfg("?:0;?:0", 0, net->nft.base_seq, + AUDIT_NFT_OP_GEN_REGISTER); + if (nlmsg_report(nlh) && !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES)) return; -- 1.8.3.1
WARNING: multiple messages have this Message-ID (diff)
From: Richard Guy Briggs <rgb@redhat.com> To: Linux-Audit Mailing List <linux-audit@redhat.com>, LKML <linux-kernel@vger.kernel.org>, netfilter-devel@vger.kernel.org Cc: Richard Guy Briggs <rgb@redhat.com>, fw@strlen.de, twoerner@redhat.com, eparis@parisplace.org, tgraf@infradead.org Subject: [PATCH ghak124 v3] audit: log nftables configuration change events Date: Thu, 4 Jun 2020 09:20:49 -0400 [thread overview] Message-ID: <f9da8b5dbf2396b621c77c17b5b1123be5aa484e.1591275439.git.rgb@redhat.com> (raw) iptables, ip6tables, arptables and ebtables table registration, replacement and unregistration configuration events are logged for the native (legacy) iptables setsockopt api, but not for the nftables netlink api which is used by the nft-variant of iptables in addition to nftables itself. Add calls to log the configuration actions in the nftables netlink api. This uses the same NETFILTER_CFG record format but overloads the table field. type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.878:162) : table=?:0;?:0 family=unspecified entries=2 op=nft_register_gen pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.878:162) : table=firewalld:1;?:0 family=inet entries=0 op=nft_register_table pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.911:163) : table=firewalld:1;filter_FORWARD:85 family=inet entries=8 op=nft_register_chain pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.911:163) : table=firewalld:1;filter_FORWARD:85 family=inet entries=101 op=nft_register_rule pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.911:163) : table=firewalld:1;__set0:87 family=inet entries=87 op=nft_register_setelem pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld ... type=NETFILTER_CFG msg=audit(2020-05-28 17:46:41.911:163) : table=firewalld:1;__set0:87 family=inet entries=0 op=nft_register_set pid=396 subj=system_u:system_r:firewalld_t:s0 comm=firewalld For further information please see issue https://github.com/linux-audit/audit-kernel/issues/124 Signed-off-by: Richard Guy Briggs <rgb@redhat.com> --- Changelog: v3: - inline message type rather than table v2: - differentiate between xtables and nftables - add set, setelem, obj, flowtable, gen - use nentries field as appropriate per type - overload the "tables" field with table handle and chain/set/flowtable include/linux/audit.h | 18 ++++++++ kernel/auditsc.c | 24 ++++++++-- net/netfilter/nf_tables_api.c | 103 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 142 insertions(+), 3 deletions(-) diff --git a/include/linux/audit.h b/include/linux/audit.h index 3fcd9ee49734..604ede630580 100644 --- a/include/linux/audit.h +++ b/include/linux/audit.h @@ -12,6 +12,7 @@ #include <linux/sched.h> #include <linux/ptrace.h> #include <uapi/linux/audit.h> +#include <uapi/linux/netfilter/nf_tables.h> #define AUDIT_INO_UNSET ((unsigned long)-1) #define AUDIT_DEV_UNSET ((dev_t)-1) @@ -98,6 +99,23 @@ enum audit_nfcfgop { AUDIT_XT_OP_REGISTER, AUDIT_XT_OP_REPLACE, AUDIT_XT_OP_UNREGISTER, + AUDIT_NFT_OP_TABLE_REGISTER, + AUDIT_NFT_OP_TABLE_UNREGISTER, + AUDIT_NFT_OP_CHAIN_REGISTER, + AUDIT_NFT_OP_CHAIN_UNREGISTER, + AUDIT_NFT_OP_RULE_REGISTER, + AUDIT_NFT_OP_RULE_UNREGISTER, + AUDIT_NFT_OP_SET_REGISTER, + AUDIT_NFT_OP_SET_UNREGISTER, + AUDIT_NFT_OP_SETELEM_REGISTER, + AUDIT_NFT_OP_SETELEM_UNREGISTER, + AUDIT_NFT_OP_GEN_REGISTER, + AUDIT_NFT_OP_OBJ_REGISTER, + AUDIT_NFT_OP_OBJ_UNREGISTER, + AUDIT_NFT_OP_OBJ_RESET, + AUDIT_NFT_OP_FLOWTABLE_REGISTER, + AUDIT_NFT_OP_FLOWTABLE_UNREGISTER, + AUDIT_NFT_OP_INVALID, }; extern int is_audit_feature_set(int which); diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 468a23390457..3a9100e95fda 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -75,6 +75,7 @@ #include <linux/uaccess.h> #include <linux/fsnotify_backend.h> #include <uapi/linux/limits.h> +#include <uapi/linux/netfilter/nf_tables.h> #include "audit.h" @@ -136,9 +137,26 @@ struct audit_nfcfgop_tab { }; static const struct audit_nfcfgop_tab audit_nfcfgs[] = { - { AUDIT_XT_OP_REGISTER, "register" }, - { AUDIT_XT_OP_REPLACE, "replace" }, - { AUDIT_XT_OP_UNREGISTER, "unregister" }, + { AUDIT_XT_OP_REGISTER, "xt_register" }, + { AUDIT_XT_OP_REPLACE, "xt_replace" }, + { AUDIT_XT_OP_UNREGISTER, "xt_unregister" }, + { AUDIT_NFT_OP_TABLE_REGISTER, "nft_register_table" }, + { AUDIT_NFT_OP_TABLE_UNREGISTER, "nft_unregister_table" }, + { AUDIT_NFT_OP_CHAIN_REGISTER, "nft_register_chain" }, + { AUDIT_NFT_OP_CHAIN_UNREGISTER, "nft_unregister_chain" }, + { AUDIT_NFT_OP_RULE_REGISTER, "nft_register_rule" }, + { AUDIT_NFT_OP_RULE_UNREGISTER, "nft_unregister_rule" }, + { AUDIT_NFT_OP_SET_REGISTER, "nft_register_set" }, + { AUDIT_NFT_OP_SET_UNREGISTER, "nft_unregister_set" }, + { AUDIT_NFT_OP_SETELEM_REGISTER, "nft_register_setelem" }, + { AUDIT_NFT_OP_SETELEM_UNREGISTER, "nft_unregister_setelem" }, + { AUDIT_NFT_OP_GEN_REGISTER, "nft_register_gen" }, + { AUDIT_NFT_OP_OBJ_REGISTER, "nft_register_obj" }, + { AUDIT_NFT_OP_OBJ_UNREGISTER, "nft_unregister_obj" }, + { AUDIT_NFT_OP_OBJ_RESET, "nft_reset_obj" }, + { AUDIT_NFT_OP_FLOWTABLE_REGISTER, "nft_register_flowtable" }, + { AUDIT_NFT_OP_FLOWTABLE_UNREGISTER, "nft_unregister_flowtable" }, + { AUDIT_NFT_OP_INVALID, "nft_invalid" }, }; static int audit_match_perm(struct audit_context *ctx, int mask) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index 3558e76e2733..b9e7440cc87d 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -12,6 +12,7 @@ #include <linux/netlink.h> #include <linux/vmalloc.h> #include <linux/rhashtable.h> +#include <linux/audit.h> #include <linux/netfilter.h> #include <linux/netfilter/nfnetlink.h> #include <linux/netfilter/nf_tables.h> @@ -693,6 +694,16 @@ static void nf_tables_table_notify(const struct nft_ctx *ctx, int event) { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;?:0", + ctx->table->name, ctx->table->handle); + + audit_log_nfcfg(buf, + ctx->family, + ctx->table->use, + event == NFT_MSG_NEWTABLE ? + AUDIT_NFT_OP_TABLE_REGISTER : + AUDIT_NFT_OP_TABLE_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -1428,6 +1439,17 @@ static void nf_tables_chain_notify(const struct nft_ctx *ctx, int event) { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu", + ctx->table->name, ctx->table->handle, + ctx->chain->name, ctx->chain->handle); + + audit_log_nfcfg(buf, + ctx->family, + ctx->chain->use, + event == NFT_MSG_NEWCHAIN ? + AUDIT_NFT_OP_CHAIN_REGISTER : + AUDIT_NFT_OP_CHAIN_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -2691,6 +2713,17 @@ static void nf_tables_rule_notify(const struct nft_ctx *ctx, { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu", + ctx->table->name, ctx->table->handle, + ctx->chain->name, ctx->chain->handle); + + audit_log_nfcfg(buf, + ctx->family, + rule->handle, + event == NFT_MSG_NEWRULE ? + AUDIT_NFT_OP_RULE_REGISTER : + AUDIT_NFT_OP_RULE_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -3693,6 +3726,17 @@ static void nf_tables_set_notify(const struct nft_ctx *ctx, struct sk_buff *skb; u32 portid = ctx->portid; int err; + char *buf = kasprintf(gfp_flags, "%s:%llu;%s:%llu", + ctx->table->name, ctx->table->handle, + set->name, set->handle); + + audit_log_nfcfg(buf, + ctx->family, + set->field_count, + event == NFT_MSG_NEWSET ? + AUDIT_NFT_OP_SET_REGISTER : + AUDIT_NFT_OP_SET_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -4809,6 +4853,17 @@ static void nf_tables_setelem_notify(const struct nft_ctx *ctx, u32 portid = ctx->portid; struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu", + ctx->table->name, ctx->table->handle, + set->name, set->handle); + + audit_log_nfcfg(buf, + ctx->family, + set->handle, + event == NFT_MSG_NEWSETELEM ? + AUDIT_NFT_OP_SETELEM_REGISTER : + AUDIT_NFT_OP_SETELEM_UNREGISTER); + kfree(buf); if (!ctx->report && !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES)) return; @@ -5890,6 +5945,19 @@ static int nf_tables_dump_obj(struct sk_buff *skb, struct netlink_callback *cb) obj->ops->type->type != filter->type) goto cont; + if (reset) { + char *buf = kasprintf(GFP_KERNEL, + "%s:%llu;?:0", + table->name, + table->handle); + + audit_log_nfcfg(buf, + family, + obj->handle, + AUDIT_NFT_OP_OBJ_RESET); + kfree(buf); + } + if (nf_tables_fill_obj_info(skb, net, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, NFT_MSG_NEWOBJ, @@ -6000,6 +6068,17 @@ static int nf_tables_getobj(struct net *net, struct sock *nlsk, if (NFNL_MSG_TYPE(nlh->nlmsg_type) == NFT_MSG_GETOBJ_RESET) reset = true; + if (reset) { + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;?:0", + table->name, table->handle); + + audit_log_nfcfg(buf, + family, + obj->handle, + AUDIT_NFT_OP_OBJ_RESET); + kfree(buf); + } + err = nf_tables_fill_obj_info(skb2, net, NETLINK_CB(skb).portid, nlh->nlmsg_seq, NFT_MSG_NEWOBJ, 0, family, table, obj, reset); @@ -6075,6 +6154,16 @@ void nft_obj_notify(struct net *net, const struct nft_table *table, { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;?:0", + table->name, table->handle); + + audit_log_nfcfg(buf, + family, + obj->handle, + event == NFT_MSG_NEWOBJ ? + AUDIT_NFT_OP_OBJ_REGISTER : + AUDIT_NFT_OP_OBJ_UNREGISTER); + kfree(buf); if (!report && !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES)) @@ -6701,6 +6790,17 @@ static void nf_tables_flowtable_notify(struct nft_ctx *ctx, { struct sk_buff *skb; int err; + char *buf = kasprintf(GFP_KERNEL, "%s:%llu;%s:%llu", + flowtable->table->name, flowtable->table->handle, + flowtable->name, flowtable->handle); + + audit_log_nfcfg(buf, + ctx->family, + flowtable->hooknum, + event == NFT_MSG_NEWFLOWTABLE ? + AUDIT_NFT_OP_FLOWTABLE_REGISTER : + AUDIT_NFT_OP_FLOWTABLE_UNREGISTER); + kfree(buf); if (ctx->report && !nfnetlink_has_listeners(ctx->net, NFNLGRP_NFTABLES)) @@ -6822,6 +6922,9 @@ static void nf_tables_gen_notify(struct net *net, struct sk_buff *skb, struct sk_buff *skb2; int err; + audit_log_nfcfg("?:0;?:0", 0, net->nft.base_seq, + AUDIT_NFT_OP_GEN_REGISTER); + if (nlmsg_report(nlh) && !nfnetlink_has_listeners(net, NFNLGRP_NFTABLES)) return; -- 1.8.3.1 -- Linux-audit mailing list Linux-audit@redhat.com https://www.redhat.com/mailman/listinfo/linux-audit
next reply other threads:[~2020-06-04 13:22 UTC|newest] Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-06-04 13:20 Richard Guy Briggs [this message] 2020-06-04 13:20 ` [PATCH ghak124 v3] audit: log nftables configuration change events Richard Guy Briggs 2020-06-04 17:03 ` Steve Grubb 2020-06-04 17:03 ` Steve Grubb 2020-06-04 17:57 ` Richard Guy Briggs 2020-06-04 17:57 ` Richard Guy Briggs 2020-06-04 18:51 ` Steve Grubb 2020-06-04 18:51 ` Steve Grubb 2020-06-24 0:34 ` Paul Moore 2020-06-24 0:34 ` Paul Moore 2020-06-24 10:03 ` Pablo Neira Ayuso 2020-06-24 10:03 ` Pablo Neira Ayuso 2020-06-24 12:34 ` Richard Guy Briggs 2020-06-24 12:34 ` Richard Guy Briggs 2020-06-24 13:03 ` Pablo Neira Ayuso 2020-06-24 13:03 ` Pablo Neira Ayuso 2020-06-24 13:26 ` Richard Guy Briggs 2020-06-24 13:26 ` Richard Guy Briggs 2021-02-11 15:16 ` Phil Sutter 2021-02-11 16:29 ` Paul Moore 2021-02-11 16:29 ` Paul Moore 2021-02-11 20:26 ` Richard Guy Briggs 2021-02-11 20:26 ` Richard Guy Briggs 2021-02-11 22:09 ` Florian Westphal 2021-02-17 23:41 ` Richard Guy Briggs 2021-02-17 23:41 ` Richard Guy Briggs 2021-02-18 8:22 ` Florian Westphal 2021-02-18 8:22 ` Florian Westphal 2021-02-18 12:42 ` Richard Guy Briggs 2021-02-18 12:42 ` Richard Guy Briggs 2021-02-18 12:52 ` Florian Westphal 2021-02-18 12:52 ` Florian Westphal 2021-02-18 13:28 ` Richard Guy Briggs 2021-02-18 13:28 ` Richard Guy Briggs 2021-02-18 13:41 ` Florian Westphal 2021-02-18 13:41 ` Florian Westphal 2021-02-18 21:20 ` Richard Guy Briggs 2021-02-18 21:20 ` Richard Guy Briggs 2021-02-18 22:42 ` Florian Westphal 2021-02-18 22:42 ` Florian Westphal 2021-02-19 6:26 ` Richard Guy Briggs 2021-02-19 6:26 ` Richard Guy Briggs 2021-02-19 19:25 ` Richard Guy Briggs 2021-02-19 19:25 ` Richard Guy Briggs 2021-02-12 20:48 ` Richard Guy Briggs 2021-02-12 20:48 ` Richard Guy Briggs 2021-02-11 21:02 ` Steve Grubb 2021-02-11 21:02 ` Steve Grubb 2021-02-12 12:11 ` Phil Sutter 2021-02-12 20:54 ` Richard Guy Briggs 2021-02-12 20:54 ` Richard Guy Briggs
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