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/itop-0.1/src/itop.c
Examining data/itop-0.1/src/config.h

FINAL RESULTS:

data/itop-0.1/src/itop.c:139:2:  [4] (shell) system:
  This causes a new program to execute and is difficult to use safely
  (CWE-78). try using a library call that implements the same functionality
  if available.
	system("top");
data/itop-0.1/src/itop.c:156:2:  [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.
	printf(CLEAR);
data/itop-0.1/src/itop.c:43:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char name[MAX_NAME_LEN+1];
data/itop-0.1/src/itop.c:47:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char buf[256];
data/itop-0.1/src/itop.c:51:12:  [2] (misc) fopen:
  Check when opening files - can an attacker redirect it (via symlinks),
  force the opening of special file type (e.g., device files), move things
  around to create a race condition, control its ancestors, or change its
  contents? (CWE-362).
  if((proc=fopen("/proc/interrupts","rt"))==NULL) {
data/itop-0.1/src/itop.c:66:12:  [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).
    cur_no=atoi(tmpptr);
data/itop-0.1/src/itop.c:71:11:  [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).
    count=atoi(tmpptr);
data/itop-0.1/src/itop.c:118:12:  [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).
      loop=atoi(argv[++count]);
data/itop-0.1/src/itop.c:61:9:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    buf[strlen(buf)-1]=0;
data/itop-0.1/src/itop.c:74:5:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
    strncpy(interrupts[cur_no].name,buf+33,MAX_NAME_LEN+1);
data/itop-0.1/src/itop.c:90:10:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
    if ((strlen(interrupts[count].name)>0) || (interrupts[count].count>0))
data/itop-0.1/src/itop.c:132:22:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    if ((loop<0) && (read(fileno(stdin),&key,1)==1)) {

ANALYSIS SUMMARY:

Hits = 12
Lines analyzed = 172 in approximately 0.02 seconds (7933 lines/second)
Physical Source Lines of Code (SLOC) = 135
Hits@level = [0]   7 [1]   4 [2]   6 [3]   0 [4]   2 [5]   0
Hits@level+ = [0+]  19 [1+]  12 [2+]   8 [3+]   2 [4+]   2 [5+]   0
Hits/KSLOC@level+ = [0+] 140.741 [1+] 88.8889 [2+] 59.2593 [3+] 14.8148 [4+] 14.8148 [5+]   0
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.