Coverity SECURE_CODING - CID 10695

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CID: 10695
Checker: SECURE_CODING
Category: No category available
CWE definition: http://cwe.mitre.org/data/definitions/676.html
File: /tmp/buildd/indicator-datetime-0.3.90/src/datetime-prefs.c
Function: input_time_text()
Code snippet:
404
405 if (is_locale_12h ()) { // TODO: make this look-at/watch gsettings?
406 char ampm[51];
407
CID 10695 - SECURE_CODING
[VERY RISKY]. Using "sscanf" can cause a buffer overflow when done incorrectly. sscanf() assumes an arbitrarily large string, so callers must use correct precision specifiers or never use sscanf(). Use correct precision specifiers or do your own parsing.
408 scanned = sscanf (text, "%u:%u:%u %50s", &hour_in, &minute_in, &second_in, ampm);
409 passed = (scanned == 4);
410
411 if (passed) {
412 const char *pm_str = nl_langinfo (PM_STR);
413 if (g_ascii_strcasecmp (pm_str, ampm) == 0) {