From 1890e9ce57a4b6dbc732f8f11d78001bea7c5855 Mon Sep 17 00:00:00 2001 From: Filip Tehlar Date: Wed, 2 Oct 2019 09:08:04 +0000 Subject: ikev2: fix dangling pointer Type: fix Change-Id: I8aa9029e0a5cf21aa24a90b39eb2787653f65abb Signed-off-by: Filip Tehlar --- src/plugins/ikev2/ikev2.c | 39 ++++++++++++++++++++++++++------------- src/plugins/ikev2/ikev2_priv.h | 3 ++- 2 files changed, 28 insertions(+), 14 deletions(-) (limited to 'src/plugins/ikev2') diff --git a/src/plugins/ikev2/ikev2.c b/src/plugins/ikev2/ikev2.c index 3b47ee21724..e90f5a3bd3b 100644 --- a/src/plugins/ikev2/ikev2.c +++ b/src/plugins/ikev2/ikev2.c @@ -389,8 +389,9 @@ ikev2_complete_sa_data (ikev2_sa_t * sa, ikev2_sa_t * sai) sa->iaddr.as_u32 = sai->iaddr.as_u32; sa->raddr.as_u32 = sai->raddr.as_u32; sa->is_initiator = sai->is_initiator; - sa->profile = sai->profile; sa->i_id.type = sai->i_id.type; + sa->profile_index = sai->profile_index; + sa->is_profile_index_set = sai->is_profile_index_set; sa->i_id.data = _(sai->i_id.data); sa->i_auth.method = sai->i_auth.method; sa->i_auth.hex = sai->i_auth.hex; @@ -1478,6 +1479,8 @@ static int ikev2_create_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, ikev2_child_sa_t * child) { + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p = 0; ipsec_add_del_tunnel_args_t a; ikev2_sa_transform_t *tr; ikev2_sa_proposal_t *proposals; @@ -1628,11 +1631,14 @@ ikev2_create_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, a.remote_crypto_key_len = vec_len (rem_ckey); clib_memcpy_fast (a.remote_crypto_key, rem_ckey, a.remote_crypto_key_len); - if (sa->profile && sa->profile->lifetime) + if (sa->is_profile_index_set) + p = pool_elt_at_index (km->profiles, sa->profile_index); + + if (p && p->lifetime) { - child->time_to_expiration = vlib_time_now (vnm->vlib_main) - + sa->profile->lifetime; - if (sa->profile->lifetime_jitter) + child->time_to_expiration = + vlib_time_now (vnm->vlib_main) + p->lifetime; + if (p->lifetime_jitter) { // This is not much better than rand(3), which Coverity warns // is unsuitable for security applications; random_u32 is @@ -1642,8 +1648,7 @@ ikev2_create_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, u32 rnd = (u32) (vlib_time_now (vnm->vlib_main) * 1e6); rnd = random_u32 (&rnd); - child->time_to_expiration += - 1 + (rnd % sa->profile->lifetime_jitter); + child->time_to_expiration += 1 + (rnd % p->lifetime_jitter); } } @@ -2996,7 +3001,8 @@ ikev2_initiate_sa_init (vlib_main_t * vm, u8 * name) ikev2_sa_free_proposal_vector (&proposals); sa.is_initiator = 1; - sa.profile = p; + sa.profile_index = km->profiles - p; + sa.is_profile_index_set = 1; sa.state = IKEV2_STATE_SA_INIT; ikev2_generate_sa_init_data (&sa); ikev2_payload_add_ke (chain, sa.dh_group, sa.i_dh_data); @@ -3353,17 +3359,21 @@ static u8 ikev2_mngr_process_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * csa) { ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p = 0; vlib_main_t *vm = km->vlib_main; f64 now = vlib_time_now (vm); u8 res = 0; - if (sa->is_initiator && sa->profile && csa->time_to_expiration + if (sa->is_profile_index_set) + p = pool_elt_at_index (km->profiles, sa->profile_index); + + if (sa->is_initiator && p && csa->time_to_expiration && now > csa->time_to_expiration) { if (!csa->is_expired || csa->rekey_retries > 0) { ikev2_rekey_child_sa_internal (vm, sa, csa); - csa->time_to_expiration = now + sa->profile->handover; + csa->time_to_expiration = now + p->handover; csa->is_expired = 1; if (csa->rekey_retries == 0) { @@ -3399,6 +3409,7 @@ ikev2_mngr_process_ipsec_sa (ipsec_sa_t * ipsec_sa) vlib_main_t *vm = km->vlib_main; ikev2_main_per_thread_data_t *tkm; ikev2_sa_t *fsa = 0; + ikev2_profile_t *p = 0; ikev2_child_sa_t *fchild = 0; f64 now = vlib_time_now (vm); vlib_counter_t counts; @@ -3423,10 +3434,12 @@ ikev2_mngr_process_ipsec_sa (ipsec_sa_t * ipsec_sa) vlib_get_combined_counter (&ipsec_sa_counters, ipsec_sa->stat_index, &counts); - if (fchild && fsa && fsa->profile && fsa->profile->lifetime_maxdata) + if (fsa && fsa->is_profile_index_set) + p = pool_elt_at_index (km->profiles, fsa->profile_index); + + if (fchild && p && p->lifetime_maxdata) { - if (!fchild->is_expired - && counts.bytes > fsa->profile->lifetime_maxdata) + if (!fchild->is_expired && counts.bytes > p->lifetime_maxdata) { fchild->time_to_expiration = now; } diff --git a/src/plugins/ikev2/ikev2_priv.h b/src/plugins/ikev2/ikev2_priv.h index cfdc24f797a..0fedc15310a 100644 --- a/src/plugins/ikev2/ikev2_priv.h +++ b/src/plugins/ikev2/ikev2_priv.h @@ -250,7 +250,8 @@ typedef struct u8 is_initiator; u32 last_init_msg_id; - ikev2_profile_t *profile; + u8 is_profile_index_set; + u32 profile_index; ikev2_child_sa_t *childs; } ikev2_sa_t; -- cgit 1.2.3-korg