https://git.kernel.org/pub/scm/network/connman/connman.git/patch/?id=416bfaff988882c553c672e5bfc2d4f648d29e8a From 416bfaff988882c553c672e5bfc2d4f648d29e8a Mon Sep 17 00:00:00 2001 From: Daniel Wagner Date: Tue, 5 Jul 2022 09:11:09 +0200 Subject: wispr: Update portal context references Maintain proper portal context references to avoid UAF. Fixes: CVE-2022-32293 --- src/wispr.c | 34 ++++++++++++++++++++++------------ 1 file changed, 22 insertions(+), 12 deletions(-) diff --git a/src/wispr.c b/src/wispr.c index bde7e63b..84bed33f 100644 --- a/src/wispr.c +++ b/src/wispr.c @@ -105,8 +105,6 @@ static bool enable_online_to_ready_transition = false; static void connman_wispr_message_init(struct connman_wispr_message *msg) { - DBG(""); - msg->has_error = false; msg->current_element = NULL; @@ -166,8 +164,6 @@ static void free_wispr_routes(struct connman_wispr_portal_context *wp_context) static void free_connman_wispr_portal_context( struct connman_wispr_portal_context *wp_context) { - DBG("context %p", wp_context); - if (wp_context->wispr_portal) { if (wp_context->wispr_portal->ipv4_context == wp_context) wp_context->wispr_portal->ipv4_context = NULL; @@ -483,9 +479,6 @@ static void portal_manage_status(GWebResult *result, &str)) connman_info("Client-Timezone: %s", str); - if (!enable_online_to_ready_transition) - wispr_portal_context_unref(wp_context); - __connman_service_ipconfig_indicate_state(service, CONNMAN_SERVICE_STATE_ONLINE, type); @@ -546,14 +539,17 @@ static void wispr_portal_request_portal( { DBG(""); + wispr_portal_context_ref(wp_context); wp_context->request_id = g_web_request_get(wp_context->web, wp_context->status_url, wispr_portal_web_result, wispr_route_request, wp_context); - if (wp_context->request_id == 0) + if (wp_context->request_id == 0) { wispr_portal_error(wp_context); + wispr_portal_context_unref(wp_context); + } } static bool wispr_input(const guint8 **data, gsize *length, @@ -618,13 +614,15 @@ static void wispr_portal_browser_reply_cb(struct connman_service *service, return; if (!authentication_done) { - wispr_portal_error(wp_context); free_wispr_routes(wp_context); + wispr_portal_error(wp_context); + wispr_portal_context_unref(wp_context); return; } /* Restarting the test */ __connman_service_wispr_start(service, wp_context->type); + wispr_portal_context_unref(wp_context); } static void wispr_portal_request_wispr_login(struct connman_service *service, @@ -700,11 +698,13 @@ static bool wispr_manage_message(GWebResult *result, wp_context->wispr_result = CONNMAN_WISPR_RESULT_LOGIN; + wispr_portal_context_ref(wp_context); if (__connman_agent_request_login_input(wp_context->service, wispr_portal_request_wispr_login, - wp_context) != -EINPROGRESS) + wp_context) != -EINPROGRESS) { wispr_portal_error(wp_context); - else + wispr_portal_context_unref(wp_context); + } else return true; break; @@ -753,6 +753,7 @@ static bool wispr_portal_web_result(GWebResult *result, gpointer user_data) if (length > 0) { g_web_parser_feed_data(wp_context->wispr_parser, chunk, length); + wispr_portal_context_unref(wp_context); return true; } @@ -770,6 +771,7 @@ static bool wispr_portal_web_result(GWebResult *result, gpointer user_data) switch (status) { case 000: + wispr_portal_context_ref(wp_context); __connman_agent_request_browser(wp_context->service, wispr_portal_browser_reply_cb, wp_context->status_url, wp_context); @@ -781,11 +783,14 @@ static bool wispr_portal_web_result(GWebResult *result, gpointer user_data) if (g_web_result_get_header(result, "X-ConnMan-Status", &str)) { portal_manage_status(result, wp_context); + wispr_portal_context_unref(wp_context); return false; - } else + } else { + wispr_portal_context_ref(wp_context); __connman_agent_request_browser(wp_context->service, wispr_portal_browser_reply_cb, wp_context->redirect_url, wp_context); + } break; case 300: @@ -798,6 +803,7 @@ static bool wispr_portal_web_result(GWebResult *result, gpointer user_data) !g_web_result_get_header(result, "Location", &redirect)) { + wispr_portal_context_ref(wp_context); __connman_agent_request_browser(wp_context->service, wispr_portal_browser_reply_cb, wp_context->status_url, wp_context); @@ -808,6 +814,7 @@ static bool wispr_portal_web_result(GWebResult *result, gpointer user_data) wp_context->redirect_url = g_strdup(redirect); + wispr_portal_context_ref(wp_context); wp_context->request_id = g_web_request_get(wp_context->web, redirect, wispr_portal_web_result, wispr_route_request, wp_context); @@ -820,6 +827,7 @@ static bool wispr_portal_web_result(GWebResult *result, gpointer user_data) break; case 505: + wispr_portal_context_ref(wp_context); __connman_agent_request_browser(wp_context->service, wispr_portal_browser_reply_cb, wp_context->status_url, wp_context); @@ -832,6 +840,7 @@ static bool wispr_portal_web_result(GWebResult *result, gpointer user_data) wp_context->request_id = 0; done: wp_context->wispr_msg.message_type = -1; + wispr_portal_context_unref(wp_context); return false; } @@ -890,6 +899,7 @@ static void proxy_callback(const char *proxy, void *user_data) xml_wispr_parser_callback, wp_context); wispr_portal_request_portal(wp_context); + wispr_portal_context_unref(wp_context); } static gboolean no_proxy_callback(gpointer user_data) -- cgit