shadow-utils/SOURCES/shadow-4.5-usermod-unlock.patch

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2022-05-17 10:29:16 +00:00
Index: shadow-4.5/src/usermod.c
===================================================================
--- shadow-4.5.orig/src/usermod.c
+++ shadow-4.5/src/usermod.c
@@ -455,14 +455,17 @@ static char *new_pw_passwd (char *pw_pas
strcat (buf, pw_pass);
pw_pass = buf;
} else if (Uflg && pw_pass[0] == '!') {
- char *s;
+ char *s = pw_pass;
- if (pw_pass[1] == '\0') {
+ while ('!' == *s)
+ ++s;
+
+ if (*s == '\0') {
fprintf (stderr,
_("%s: unlocking the user's password would result in a passwordless account.\n"
"You should set a password with usermod -p to unlock this user's password.\n"),
Prog);
- return pw_pass;
+ return NULL;
}
#ifdef WITH_AUDIT
@@ -471,12 +474,15 @@ static char *new_pw_passwd (char *pw_pas
user_newname, (unsigned int) user_newid, 1);
#endif
SYSLOG ((LOG_INFO, "unlock user '%s' password", user_newname));
- s = pw_pass;
- while ('\0' != *s) {
- *s = *(s + 1);
- s++;
- }
+ memmove (pw_pass, s, strlen (s) + 1);
} else if (pflg) {
+ if (strchr (user_pass, ':') != NULL) {
+ fprintf (stderr,
+ _("%s: The password field cannot contain a colon character.\n"),
+ Prog);
+ return NULL;
+
+ }
#ifdef WITH_AUDIT
audit_logger (AUDIT_USER_CHAUTHTOK, Prog,
"updating-password",
@@ -525,6 +531,8 @@ static void new_pwent (struct passwd *pw
if ( (!is_shadow_pwd)
|| (strcmp (pwent->pw_passwd, SHADOW_PASSWD_STRING) != 0)) {
pwent->pw_passwd = new_pw_passwd (pwent->pw_passwd);
+ if (pwent->pw_passwd == NULL)
+ fail_exit (E_PW_UPDATE);
}
if (uflg) {
@@ -639,6 +647,8 @@ static void new_spent (struct spwd *spen
* + aging has been requested
*/
spent->sp_pwdp = new_pw_passwd (spent->sp_pwdp);
+ if (spent->sp_pwdp == NULL)
+ fail_exit(E_PW_UPDATE);
if (pflg) {
spent->sp_lstchg = (long) gettime () / SCALE;