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Patch from Paul Wouters to handle crypt() returning NULL 

Resolves: #814803
This commit is contained in:
Honza Horák 2012-04-23 14:37:15 +02:00
parent 379be8cd72
commit 1604bf4577
2 changed files with 75 additions and 1 deletions
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68
yp-tools-2.12-crypt.patch Normal file
View File

@ -0,0 +1,68 @@
diff -up yp-tools-2.12/src/yppasswd.c.crypt yp-tools-2.12/src/yppasswd.c
--- yp-tools-2.12/src/yppasswd.c.crypt 2012-04-23 13:01:35.599721168 +0200
+++ yp-tools-2.12/src/yppasswd.c 2012-04-23 13:16:18.251261293 +0200
@@ -448,13 +448,19 @@ verifypassword (struct passwd *pwd, char
}
passwdlen = get_passwd_len (pwd->pw_passwd);
- if (pwd->pw_passwd[0]
+ if (pwd->pw_passwd[0]
&& 0 != strcmp (pwd->pw_passwd, "x") /* don't check shadow passwords */
- && !strncmp (pwd->pw_passwd, crypt (pwdstr, pwd->pw_passwd), passwdlen)
&& uid)
{
- fputs (_("You cannot reuse the old password.\n"), stderr);
- return 0;
+ char *crypted = crypt(pwdstr, pwd->pw_passwd);
+ if(crypted == NULL) {
+ fputs (_("crypt() call failed.\n"), stderr);
+ return 0;
+ }
+ if(!strncmp (pwd->pw_passwd, crypted, passwdlen)) {
+ fputs (_("You cannot reuse the old password.\n"), stderr);
+ return 0;
+ }
}
r = 0;
@@ -772,9 +778,16 @@ main (int argc, char **argv)
{
int passwdlen = get_passwd_len (pwd->pw_passwd);
char *sane_passwd = alloca (passwdlen + 1);
+ char *crypted;
strncpy (sane_passwd, pwd->pw_passwd, passwdlen);
sane_passwd[passwdlen] = 0;
- if (strcmp (crypt (s, sane_passwd), sane_passwd))
+ crypted = crypt (s, sane_passwd);
+ if(crypted == NULL)
+ {
+ fprintf (stderr, _("Sorry - crypt() failed.\n"));
+ return 1;
+ }
+ if (strcmp (crypted, sane_passwd))
{
fprintf (stderr, _("Sorry.\n"));
return 1;
@@ -789,6 +802,7 @@ main (int argc, char **argv)
char *error_msg;
#endif /* USE_CRACKLIB */
char *buf, salt[37], *p = NULL;
+ char *crypted;
int tries = 0;
buf = (char *) malloc (129);
@@ -869,7 +883,13 @@ main (int argc, char **argv)
break;
}
- yppwd.newpw.pw_passwd = strdup (crypt (buf, salt));
+ crypted = crypt (buf, salt);
+ if(crypted == NULL) {
+ fprintf (stderr, _("Sorry - crypt() failed.\n"));
+ return 1;
+ } else {
+ yppwd.newpw.pw_passwd = strdup (crypted);
+ }
}
if (f_flag)

8
yp-tools.spec
View File

@ -1,7 +1,7 @@
Summary: NIS (or YP) client programs
Name: yp-tools
Version: 2.12
Release: 8%{?dist}
Release: 9%{?dist}
License: GPLv2
Group: System Environment/Base
Source: ftp://ftp.kernel.org/pub/linux/utils/net/NIS/yp-tools-%{version}.tar.bz2
@ -10,6 +10,7 @@ Patch0: yp-tools-2.11-shadow.patch
Patch1: yp-tools-2.12-typo.patch
Patch2: yp-tools-2.12-gethost.patch
Patch3: yp-tools-2.12-hash.patch
Patch4: yp-tools-2.12-crypt.patch
Url: http://www.linux-nis.org/nis/yp-tools/index.html
Requires: ypbind
@ -39,6 +40,7 @@ you'll need to install the ypserv package on one machine on the network.
%patch1 -p1 -b .typo
%patch2 -p1 -b .gethost
%patch3 -p1 -b .hash
%patch4 -p1 -b .crypt
%build
%configure --disable-domainname
@ -60,6 +62,10 @@ make DESTDIR="$RPM_BUILD_ROOT" INSTALL_PROGRAM=install install
/var/yp/nicknames
%changelog
* Mon Apr 23 2012 Honza Horak <hhorak@redhat.com> - 2.12-9
- Patch from Paul Wouters to handle crypt() returning NULL
Resolves: #814803
* Sat Jan 14 2012 Fedora Release Engineering <rel-eng@lists.fedoraproject.org> - 2.12-8
- Rebuilt for https://fedoraproject.org/wiki/Fedora_17_Mass_Rebuild