wbinfo: Prevent client segfault with given EOF

Signed-off-by: Garming Sam <garming@catalyst.net.nz>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

diff --git a/nsswitch/wbinfo.c b/nsswitch/wbinfo.c
index 57f2b3be336a5fa53d17a3107c437d1ff295e065..67a97b5bbc04b3e15e049a2ea7bf80f5c2ba9fce 100644 (file)
--- a/nsswitch/wbinfo.c
+++ b/nsswitch/wbinfo.c
@@ -1781,7 +1781,8 @@ static bool wbinfo_auth_crap(char *username, bool use_ntlmv2, bool use_lanman)
                                                get_winbind_netbios_name(),
                                                get_winbind_domain());
 
-               if (!SMBNTLMv2encrypt(NULL, name_user, name_domain, pass,
+               if (pass != NULL &&
+                   !SMBNTLMv2encrypt(NULL, name_user, name_domain, pass,
                                      &server_chal,
                                      &names_blob,
                                      &lm, &nt, NULL, NULL)) {