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eap-aka: round to nearest word on message buffers

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One of these message buffers was overflowing due to padding not
being taken into account (caught by sanitizers). Wrapped the length
of all message buffers with EAP_SIM_ROUND as to account for any
padding that attributes may add.
This commit is contained in:
James Prestwood 2021-07-30 08:07:26 -07:00 committed by Denis Kenzior
parent e2e625fa18
commit 4bcfa21ca4
1 changed files with 3 additions and 3 deletions
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6
src/eap-aka.c
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@ -189,7 +189,7 @@ static void check_milenage_cb(const uint8_t *res, const uint8_t *ck,
struct eap_aka_handle *aka = eap_get_data(eap); struct eap_aka_handle *aka = eap_get_data(eap);
size_t resp_len = aka->protected ? 44 : 40; size_t resp_len = aka->protected ? 44 : 40;
uint8_t response[resp_len + 4]; uint8_t response[EAP_SIM_ROUND(resp_len + 4)];
uint8_t *pos = response; uint8_t *pos = response;
if (auts) { if (auts) {
@ -512,7 +512,7 @@ static void handle_notification(struct eap_state *eap, const uint8_t *pkt,
if (value == EAP_SIM_SUCCESS && aka->protected && if (value == EAP_SIM_SUCCESS && aka->protected &&
aka->state == EAP_AKA_STATE_CHALLENGE) { aka->state == EAP_AKA_STATE_CHALLENGE) {
/* header + MAC + MAC header */ /* header + MAC + MAC header */
uint8_t response[8 + EAP_SIM_MAC_LEN + 4]; uint8_t response[EAP_SIM_ROUND(8 + EAP_SIM_MAC_LEN + 4)];
uint8_t *pos = response; uint8_t *pos = response;
/* /*
@ -564,7 +564,7 @@ static void handle_identity(struct eap_state *eap, const uint8_t *pkt,
size_t len) size_t len)
{ {
struct eap_aka_handle *aka = eap_get_data(eap); struct eap_aka_handle *aka = eap_get_data(eap);
uint8_t response[8 + strlen(aka->identity) + 4]; uint8_t response[EAP_SIM_ROUND(8 + strlen(aka->identity) + 4)];
uint8_t *pos = response; uint8_t *pos = response;
if (aka->state != EAP_AKA_STATE_UNCONNECTED) { if (aka->state != EAP_AKA_STATE_UNCONNECTED) {