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-rw-r--r--source3/web/swat.c25
1 files changed, 19 insertions, 6 deletions
diff --git a/source3/web/swat.c b/source3/web/swat.c
index 69d9fec64f..1ecaa5795d 100644
--- a/source3/web/swat.c
+++ b/source3/web/swat.c
@@ -199,16 +199,29 @@ bool verify_xsrf_token(const char *formname)
const char *pass = cgi_user_pass();
const char *token = cgi_variable_nonull(XSRF_TOKEN);
const char *time_str = cgi_variable_nonull(XSRF_TIME);
+ char *p = NULL;
+ long long xsrf_time_ll = 0;
time_t xsrf_time = 0;
time_t now = time(NULL);
- if (sizeof(time_t) == sizeof(int)) {
- xsrf_time = atoi(time_str);
- } else if (sizeof(time_t) == sizeof(long)) {
- xsrf_time = atol(time_str);
- } else if (sizeof(time_t) == sizeof(long long)) {
- xsrf_time = atoll(time_str);
+ errno = 0;
+ xsrf_time_ll = strtoll(time_str, &p, 10);
+ if (errno != 0) {
+ return false;
+ }
+ if (p == NULL) {
+ return false;
+ }
+ if (PTR_DIFF(p, time_str) > strlen(time_str)) {
+ return false;
+ }
+ if (xsrf_time_ll > _TYPE_MAXIMUM(time_t)) {
+ return false;
+ }
+ if (xsrf_time_ll < _TYPE_MINIMUM(time_t)) {
+ return false;
}
+ xsrf_time = xsrf_time_ll;
if (abs(now - xsrf_time) > XSRF_TIMEOUT) {
return false;