Given the following code containing errors, provide Common Weakness Enumeration (CWE) identifiers and corresponding messages in JSON format. Each identified weakness should have a unique entry in the JSON array.
    Code: am_cache_entry_t *am_cache_new(server_rec *s, const char *key)
{
    am_cache_entry_t *t;
    am_mod_cfg_rec *mod_cfg;
    void *table;
    apr_time_t current_time;
    int i;
    apr_time_t age;
    int rv;
    char buffer[512];

    /* Check if we have a valid session key. We abort if we don't. */
    if(key == NULL || strlen(key) != AM_ID_LENGTH) {
        return NULL;
    }


    mod_cfg = am_get_mod_cfg(s);


    /* Lock the table. */
    if((rv = apr_global_mutex_lock(mod_cfg->lock)) != APR_SUCCESS) {
        ap_log_error(APLOG_MARK, APLOG_ERR, 0, s,
                     "apr_global_mutex_lock() failed [%d]: %s",
                     rv, apr_strerror(rv, buffer, sizeof(buffer)));
        return NULL;
    }

    table = apr_shm_baseaddr_get(mod_cfg->cache);

    /* Get current time. If we find a entry with expires <= the current
     * time, then we can use it.
     */
    current_time = apr_time_now();

    /* We will use 't' to remember the best/oldest entry. We
     * initalize it to the first entry in the table to simplify the
     * following code (saves test for t == NULL).
     */
    t = am_cache_entry_ptr(mod_cfg, table, 0);

    /* Iterate over the session table. Update 't' to match the "best"
     * entry (the least recently used). 't' will point a free entry
     * if we find one. Otherwise, 't' will point to the least recently
     * used entry.
     */
    for(i = 0; i < mod_cfg->init_cache_size; i++) {
        am_cache_entry_t *e = am_cache_entry_ptr(mod_cfg, table, i);
        if (e->key[0] == '\0') {
            /* This entry is free. Update 't' to this entry
             * and exit loop.
             */
            t = e;
            break;
        }

        if (e->expires <= current_time) {
            /* This entry is expired, and is therefore free.
             * Update 't' and exit loop.
             */
            t = e;
            break;
        }

        if (e->access < t->access) {
            /* This entry is older than 't' - update 't'. */
            t = e;
        }
    }


    if(t->key[0] != '\0' && t->expires > current_time) {
        /* We dropped a LRU entry. Calculate the age in seconds. */
        age = (current_time - t->access) / 1000000;

        if(age < 3600) {
            ap_log_error(APLOG_MARK, APLOG_NOTICE, 0, s,
                         "Dropping LRU entry entry with age = %" APR_TIME_T_FMT
                         "s, which is less than one hour. It may be a good"
                         " idea to increase MellonCacheSize.",
                         age);
        }
    }

    /* Now 't' points to the entry we are going to use. We initialize
     * it and returns it.
     */

    strcpy(t->key, key);

    /* Far far into the future. */
    t->expires = 0x7fffffffffffffffLL;

    t->logged_in = 0;
    t->size = 0;

    am_cache_storage_null(&t->user);
    am_cache_storage_null(&t->lasso_identity);
    am_cache_storage_null(&t->lasso_session);
    am_cache_storage_null(&t->lasso_saml_response);
    am_cache_entry_env_null(t);

    t->pool_size = am_cache_entry_pool_size(mod_cfg);
    t->pool[0] = '\0';
    t->pool_used = 1;

    return t;
} ; Sample JSON Format Confermily Expected output: "examples" => "cwe": "xxx"; "message": "xxx"
    
 'cwe': ['CWE-79'], 'message': 'Fix Cross-Site Session Transfer vulnerability

mod_auth_mellon did not verify that the site the session was created
for was the same site as the site the user accessed. This allows an
attacker with access to one web site on a server to use the same
session to get access to a different site running on the same server.

This patch fixes this vulnerability by storing the cookie parameters
used when creating the session in the session, and verifying those
parameters when the session is loaded.

Thanks to François Kooman for reporting this vulnerability.

This vulnerability has been assigned CVE-2017-6807.'