diff options
Diffstat (limited to 'src/lib/krb4/kuserok.c')
| -rw-r--r-- | src/lib/krb4/kuserok.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/lib/krb4/kuserok.c b/src/lib/krb4/kuserok.c index 0aee893..20587cb 100644 --- a/src/lib/krb4/kuserok.c +++ b/src/lib/krb4/kuserok.c @@ -118,8 +118,11 @@ kuserok(kdata, luser) if ((pwd = getpwnam(luser)) == NULL) { return(NOTOK); } - (void) strcpy(pbuf, pwd->pw_dir); - (void) strcat(pbuf, "/.klogin"); + if (strlen (pwd->pw_dir) + sizeof ("/.klogin") >= sizeof (pbuf)) + return NOTOK; + (void) strncpy(pbuf, pwd->pw_dir, sizeof(pbuf) - 1); + pbuf[sizeof(pbuf) - 1] = '\0'; + (void) strncat(pbuf, "/.klogin", sizeof(pbuf) - 1 - strlen(pbuf)); if (access(pbuf, F_OK)) { /* not accessible */ /* |