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129
package/network/services/samba36/patches/025-CVE-2016-2112-v3-6.patch Normal file
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@@ -0,0 +1,129 @@
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.*/