Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler.
Number of rules (primarily dangerous function names) in C/C++ ruleset: 223
Examining data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_common.h
Examining data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/compat.h
Examining data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/error.h
Examining data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/pg_config.h
Examining data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_postgres.c
Examining data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_common.c

FINAL RESULTS:

data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_common.c:185:11:  [4] (buffer) sscanf:
  The scanf() family's %s operation, without a limit specification, permits
  buffer overflows (CWE-120, CWE-20). Specify a limit to %s, or use a
  different input function. If the scanf format is influenceable by an
  attacker, it's exploitable.
  switch (sscanf(date, _fmt_date, &year, &month, &day)) {
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_common.c:203:11:  [4] (buffer) sscanf:
  The scanf() family's %s operation, without a limit specification, permits
  buffer overflows (CWE-120, CWE-20). Specify a limit to %s, or use a
  different input function. If the scanf format is influenceable by an
  attacker, it's exploitable.
  switch (sscanf(date, _fmt_datetime, &year, &month, &day, &hour, &min, &sec, &subsec)) {
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_common.c:245:18:  [4] (buffer) sscanf:
  The scanf() family's %s operation, without a limit specification, permits
  buffer overflows (CWE-120, CWE-20). Specify a limit to %s, or use a
  different input function. If the scanf format is influenceable by an
  attacker, it's exploitable.
  tokens_read  = sscanf(date, fmt_datetime, &year, &month, &day, &hour, &min, &sec, &hour_offset, &minute_offset);
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_postgres.c:22:8:  [4] (format) vsnprintf:
  If format strings can be influenced by an attacker, they can be exploited,
  and note that sprintf variations do not always \0-terminate (CWE-134). Use
  a constant for the format specification.
#undef vsnprintf
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_postgres.c:23:8:  [4] (format) snprintf:
  If format strings can be influenced by an attacker, they can be exploited,
  and note that sprintf variations do not always \0-terminate (CWE-134). Use
  a constant for the format specification.
#undef snprintf
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_postgres.c:24:8:  [4] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf.
#undef sprintf
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_postgres.c:25:8:  [4] (format) printf:
  If format strings can be influenced by an attacker, they can be exploited
  (CWE-134). Use a constant for the format specification.
#undef printf
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_postgres.c:208:3:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
  memcpy(escaped_quotes + 1, escaped, quoted_length * sizeof(unsigned char));
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_postgres.c:546:27:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
      insert_id = INT2NUM(atoi(PQgetvalue(response, 0, 0)));
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_postgres.c:549:29:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
    affected_rows = INT2NUM(atoi(PQcmdTuples(response)));
data/ruby-dataobjects-postgres-0.10.17/ext/do_postgres/do_postgres.c:553:29:  [2] (integer) atoi:
  Unless checked, the resulting number can exceed the expected range
  (CWE-190). If source untrusted, check both minimum and maximum, even if the
  input had no minus sign (large numbers can roll over into negative number;
  consider saving to an unsigned value if that is intended).
    affected_rows = INT2NUM(atoi(PQcmdTuples(response)));

ANALYSIS SUMMARY:

Hits = 11
Lines analyzed = 2480 in approximately 0.08 seconds (32545 lines/second)
Physical Source Lines of Code (SLOC) = 1509
Hits@level = [0]   1 [1]   0 [2]   4 [3]   0 [4]   7 [5]   0
Hits@level+ = [0+]  12 [1+]  11 [2+]  11 [3+]   7 [4+]   7 [5+]   0
Hits/KSLOC@level+ = [0+] 7.95229 [1+] 7.2896 [2+] 7.2896 [3+] 4.63883 [4+] 4.63883 [5+]   0
Dot directories skipped = 1 (--followdotdir overrides)
Minimum risk level = 1
Not every hit is necessarily a security vulnerability.
There may be other security vulnerabilities; review your code!
See 'Secure Programming HOWTO'
(https://dwheeler.com/secure-programs) for more information.