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| author | Skyler Ferrante <sjf5462@rit.edu> | 2023-05-30 15:00:12 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2023-05-30 14:00:12 -0500 |
| commit | b422e3c31691412f0a5404d09f7b328477e23c48 (patch) | |
| tree | 98a1e929d3a723070c499841e63a0d142c1f9871 | |
| parent | d9f0246611aea527f21c15256a6340c618f22d73 (diff) | |
Check if crypt_method null before dereferencing
Make sure crypto_method set before sha-rounds. Only affects newusers.
| -rw-r--r-- | src/newusers.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/src/newusers.c b/src/newusers.c index ae2224fc..d6b7c3c3 100644 --- a/src/newusers.c +++ b/src/newusers.c @@ -662,6 +662,13 @@ static void process_flags (int argc, char **argv) case 's': sflg = true; bad_s = 0; + + if (!crypt_method){ + fprintf(stderr, + _("%s: Provide '--crypt-method'\n"), + Prog); + usage (EXIT_FAILURE); + } #if defined(USE_SHA_CRYPT) if ( ( ((0 == strcmp (crypt_method, "SHA256")) || (0 == strcmp (crypt_method, "SHA512"))) && (0 == getlong(optarg, &sha_rounds)))) { |