1414f1647d
This fixes the following security problems: * CVE-2015-7560 * CVE-2015-5370 * CVE-2016-2110 * CVE-2016-2111 * CVE-2016-2112 * CVE-2016-2115 * CVE-2016-2118 Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> SVN-Revision: 49175
130 lines
4.3 KiB
Diff
130 lines
4.3 KiB
Diff
From 126e3e992bed7174d60ee19212db9b717647ab2e Mon Sep 17 00:00:00 2001
|
|
From: Andreas Schneider <asn@cryptomilk.org>
|
|
Date: Wed, 30 Mar 2016 16:55:44 +0200
|
|
Subject: [PATCH 1/3] CVE-2016-2112: s3:ntlmssp: Implement missing
|
|
ntlmssp_have_feature()
|
|
|
|
Signed-off-by: Andreas Schneider <asn@samba.org>
|
|
---
|
|
source3/include/proto.h | 1 +
|
|
source3/libsmb/ntlmssp.c | 30 ++++++++++++++++++++++++++++++
|
|
2 files changed, 31 insertions(+)
|
|
|
|
--- a/source3/include/proto.h
|
|
+++ b/source3/include/proto.h
|
|
@@ -1260,6 +1260,7 @@ NTSTATUS ntlmssp_set_password(struct ntl
|
|
NTSTATUS ntlmssp_set_domain(struct ntlmssp_state *ntlmssp_state, const char *domain) ;
|
|
void ntlmssp_want_feature_list(struct ntlmssp_state *ntlmssp_state, char *feature_list);
|
|
void ntlmssp_want_feature(struct ntlmssp_state *ntlmssp_state, uint32_t feature);
|
|
+bool ntlmssp_have_feature(struct ntlmssp_state *ntlmssp_state, uint32_t feature);
|
|
NTSTATUS ntlmssp_update(struct ntlmssp_state *ntlmssp_state,
|
|
const DATA_BLOB in, DATA_BLOB *out) ;
|
|
NTSTATUS ntlmssp_server_start(TALLOC_CTX *mem_ctx,
|
|
--- a/source3/libsmb/ntlmssp.c
|
|
+++ b/source3/libsmb/ntlmssp.c
|
|
@@ -162,6 +162,36 @@ NTSTATUS ntlmssp_set_domain(struct ntlms
|
|
return NT_STATUS_OK;
|
|
}
|
|
|
|
+bool ntlmssp_have_feature(struct ntlmssp_state *ntlmssp_state,
|
|
+ uint32_t feature)
|
|
+{
|
|
+ if (feature & NTLMSSP_FEATURE_SIGN) {
|
|
+ if (ntlmssp_state->session_key.length == 0) {
|
|
+ return false;
|
|
+ }
|
|
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SIGN) {
|
|
+ return true;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (feature & NTLMSSP_FEATURE_SEAL) {
|
|
+ if (ntlmssp_state->session_key.length == 0) {
|
|
+ return false;
|
|
+ }
|
|
+ if (ntlmssp_state->neg_flags & NTLMSSP_NEGOTIATE_SEAL) {
|
|
+ return true;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ if (feature & NTLMSSP_FEATURE_SESSION_KEY) {
|
|
+ if (ntlmssp_state->session_key.length > 0) {
|
|
+ return true;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ return false;
|
|
+}
|
|
+
|
|
/**
|
|
* Request features for the NTLMSSP negotiation
|
|
*
|
|
--- a/source3/libads/sasl.c
|
|
+++ b/source3/libads/sasl.c
|
|
@@ -261,6 +261,37 @@ static ADS_STATUS ads_sasl_spnego_ntlmss
|
|
/* we have a reference conter on ntlmssp_state, if we are signing
|
|
then the state will be kept by the signing engine */
|
|
|
|
+ if (ads->ldap.wrap_type >= ADS_SASLWRAP_TYPE_SEAL) {
|
|
+ bool ok;
|
|
+
|
|
+ ok = ntlmssp_have_feature(ntlmssp_state,
|
|
+ NTLMSSP_FEATURE_SEAL);
|
|
+ if (!ok) {
|
|
+ DEBUG(0,("The ntlmssp feature sealing request, but unavailable\n"));
|
|
+ TALLOC_FREE(ntlmssp_state);
|
|
+ return ADS_ERROR_NT(NT_STATUS_INVALID_NETWORK_RESPONSE);
|
|
+ }
|
|
+
|
|
+ ok = ntlmssp_have_feature(ntlmssp_state,
|
|
+ NTLMSSP_FEATURE_SIGN);
|
|
+ if (!ok) {
|
|
+ DEBUG(0,("The ntlmssp feature signing request, but unavailable\n"));
|
|
+ TALLOC_FREE(ntlmssp_state);
|
|
+ return ADS_ERROR_NT(NT_STATUS_INVALID_NETWORK_RESPONSE);
|
|
+ }
|
|
+
|
|
+ } else if (ads->ldap.wrap_type >= ADS_SASLWRAP_TYPE_SIGN) {
|
|
+ bool ok;
|
|
+
|
|
+ ok = ntlmssp_have_feature(ntlmssp_state,
|
|
+ NTLMSSP_FEATURE_SIGN);
|
|
+ if (!ok) {
|
|
+ DEBUG(0,("The gensec feature signing request, but unavailable\n"));
|
|
+ TALLOC_FREE(ntlmssp_state);
|
|
+ return ADS_ERROR_NT(NT_STATUS_INVALID_NETWORK_RESPONSE);
|
|
+ }
|
|
+ }
|
|
+
|
|
if (ads->ldap.wrap_type > ADS_SASLWRAP_TYPE_PLAIN) {
|
|
ads->ldap.out.max_unwrapped = ADS_SASL_WRAPPING_OUT_MAX_WRAPPED - NTLMSSP_SIG_SIZE;
|
|
ads->ldap.out.sig_size = NTLMSSP_SIG_SIZE;
|
|
--- a/docs-xml/smbdotconf/ldap/clientldapsaslwrapping.xml
|
|
+++ b/docs-xml/smbdotconf/ldap/clientldapsaslwrapping.xml
|
|
@@ -34,11 +34,9 @@
|
|
</para>
|
|
|
|
<para>
|
|
- The default value is <emphasis>plain</emphasis> which is not irritable
|
|
- to KRB5 clock skew errors. That implies synchronizing the time
|
|
- with the KDC in the case of using <emphasis>sign</emphasis> or
|
|
- <emphasis>seal</emphasis>.
|
|
+ The default value is <emphasis>sign</emphasis>. That implies synchronizing the time
|
|
+ with the KDC in the case of using <emphasis>Kerberos</emphasis>.
|
|
</para>
|
|
</description>
|
|
-<value type="default">plain</value>
|
|
+<value type="default">sign</value>
|
|
</samba:parameter>
|
|
--- a/source3/param/loadparm.c
|
|
+++ b/source3/param/loadparm.c
|
|
@@ -5392,6 +5392,8 @@ static void init_globals(bool reinit_glo
|
|
Globals.ldap_debug_level = 0;
|
|
Globals.ldap_debug_threshold = 10;
|
|
|
|
+ Globals.client_ldap_sasl_wrapping = ADS_AUTH_SASL_SIGN;
|
|
+
|
|
/* This is what we tell the afs client. in reality we set the token
|
|
* to never expire, though, when this runs out the afs client will
|
|
* forget the token. Set to 0 to get NEVERDATE.*/
|