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authorSimon L. B. Nielsen <simon@FreeBSD.org>2010-01-06 21:45:30 +0000
committerSimon L. B. Nielsen <simon@FreeBSD.org>2010-01-06 21:45:30 +0000
commitfbcab568df003324cb5791cfaa44e0b01e5d66e6 (patch)
tree0307959ca3ced1b86952e056df13220108df95a8
parent84a603b232bc54dcf086c4d99668bcb91d378a77 (diff)
downloadsrc-fbcab568df003324cb5791cfaa44e0b01e5d66e6.tar.gz
src-fbcab568df003324cb5791cfaa44e0b01e5d66e6.zip
Fix BIND named(8) cache poisoning with DNSSEC validation.
[SA-10:01] Fix ntpd mode 7 denial of service. [SA-10:02] Fix ZFS ZIL playback with insecure permissions. [SA-10:03] Various FreeBSD 8.0-RELEASE improvements. [EN-10:01] Security: FreeBSD-SA-10:01.bind Security: FreeBSD-SA-10:02.ntpd Security: FreeBSD-SA-10:03.zfs Errata: FreeBSD-EN-10:01.freebsd Approved by: so (simon)
Notes
Notes: svn path=/releng/7.2/; revision=201679
-rw-r--r--UPDATING9
-rw-r--r--contrib/bind9/bin/named/query.c66
-rw-r--r--contrib/bind9/lib/dns/include/dns/types.h50
-rw-r--r--contrib/bind9/lib/dns/masterdump.c3
-rw-r--r--contrib/bind9/lib/dns/rbtdb.c4
-rw-r--r--contrib/bind9/lib/dns/resolver.c31
-rw-r--r--contrib/bind9/lib/dns/validator.c10
-rw-r--r--contrib/ntp/ntpd/ntp_request.c11
-rw-r--r--sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c12
-rw-r--r--sys/conf/newvers.sh2
10 files changed, 149 insertions, 49 deletions
diff --git a/UPDATING b/UPDATING
index db3e16335390..4bbe43081a16 100644
--- a/UPDATING
+++ b/UPDATING
@@ -8,6 +8,15 @@ Items affecting the ports and packages system can be found in
/usr/ports/UPDATING. Please read that file before running
portupgrade.
+20100106: p6 FreeBSD-SA-10:01.bind, FreeBSD-SA-10:02.ntpd,
+ FreeBSD-SA-10:03.zfs
+ Fix BIND named(8) cache poisoning with DNSSEC validation.
+ [SA-10:01]
+
+ Fix ntpd mode 7 denial of service. [SA-10:02]
+
+ Fix ZFS ZIL playback with insecure permissions. [SA-10:03]
+
20091203: p5 FreeBSD-SA-09:15.ssl, FreeBSD-SA-09:16.rtld,
FreeBSD-SA-09:17.freebsd-update
Disable SSL renegotiation in order to protect against a serious
diff --git a/contrib/bind9/bin/named/query.c b/contrib/bind9/bin/named/query.c
index 5cafbc9e45a8..181565b3db63 100644
--- a/contrib/bind9/bin/named/query.c
+++ b/contrib/bind9/bin/named/query.c
@@ -109,6 +109,8 @@
#define DNS_GETDB_NOLOG 0x02U
#define DNS_GETDB_PARTIAL 0x04U
+#define PENDINGOK(x) (((x) & DNS_DBFIND_PENDINGOK) != 0)
+
typedef struct client_additionalctx {
ns_client_t *client;
dns_rdataset_t *rdataset;
@@ -1721,8 +1723,8 @@ query_addadditional2(void *arg, dns_name_t *name, dns_rdatatype_t qtype) {
*/
if (result == ISC_R_SUCCESS &&
additionaltype == dns_rdatasetadditional_fromcache &&
- (rdataset->trust == dns_trust_pending ||
- rdataset->trust == dns_trust_glue) &&
+ (DNS_TRUST_PENDING(rdataset->trust) ||
+ DNS_TRUST_GLUE(rdataset->trust)) &&
!validate(client, db, fname, rdataset, sigrdataset)) {
dns_rdataset_disassociate(rdataset);
if (dns_rdataset_isassociated(sigrdataset))
@@ -1761,8 +1763,8 @@ query_addadditional2(void *arg, dns_name_t *name, dns_rdatatype_t qtype) {
*/
if (result == ISC_R_SUCCESS &&
additionaltype == dns_rdatasetadditional_fromcache &&
- (rdataset->trust == dns_trust_pending ||
- rdataset->trust == dns_trust_glue) &&
+ (DNS_TRUST_PENDING(rdataset->trust) ||
+ DNS_TRUST_GLUE(rdataset->trust)) &&
!validate(client, db, fname, rdataset, sigrdataset)) {
dns_rdataset_disassociate(rdataset);
if (dns_rdataset_isassociated(sigrdataset))
@@ -2547,14 +2549,14 @@ query_addbestns(ns_client_t *client) {
/*
* Attempt to validate RRsets that are pending or that are glue.
*/
- if ((rdataset->trust == dns_trust_pending ||
- (sigrdataset != NULL && sigrdataset->trust == dns_trust_pending))
+ if ((DNS_TRUST_PENDING(rdataset->trust) ||
+ (sigrdataset != NULL && DNS_TRUST_PENDING(sigrdataset->trust)))
&& !validate(client, db, fname, rdataset, sigrdataset) &&
- (client->query.dboptions & DNS_DBFIND_PENDINGOK) == 0)
+ !PENDINGOK(client->query.dboptions))
goto cleanup;
- if ((rdataset->trust == dns_trust_glue ||
- (sigrdataset != NULL && sigrdataset->trust == dns_trust_glue)) &&
+ if ((DNS_TRUST_GLUE(rdataset->trust) ||
+ (sigrdataset != NULL && DNS_TRUST_GLUE(sigrdataset->trust))) &&
!validate(client, db, fname, rdataset, sigrdataset) &&
SECURE(client) && WANTDNSSEC(client))
goto cleanup;
@@ -3344,6 +3346,8 @@ query_find(ns_client_t *client, dns_fetchevent_t *event, dns_rdatatype_t qtype)
isc_boolean_t empty_wild;
dns_rdataset_t *noqname;
isc_boolean_t resuming;
+ dns_rdataset_t tmprdataset;
+ unsigned int dboptions;
CTRACE("query_find");
@@ -3555,9 +3559,49 @@ query_find(ns_client_t *client, dns_fetchevent_t *event, dns_rdatatype_t qtype)
/*
* Now look for an answer in the database.
*/
+ dboptions = client->query.dboptions;
+ if (sigrdataset == NULL && client->view->enablednssec) {
+ /*
+ * If the client doesn't want DNSSEC we still want to
+ * look for any data pending validation to save a remote
+ * lookup if possible.
+ */
+ dns_rdataset_init(&tmprdataset);
+ sigrdataset = &tmprdataset;
+ dboptions |= DNS_DBFIND_PENDINGOK;
+ }
+ refind:
result = dns_db_find(db, client->query.qname, version, type,
- client->query.dboptions, client->now,
- &node, fname, rdataset, sigrdataset);
+ dboptions, client->now, &node, fname,
+ rdataset, sigrdataset);
+ /*
+ * If we have found pending data try to validate it.
+ * If the data does not validate as secure and we can't
+ * use the unvalidated data requery the database with
+ * pending disabled to prevent infinite looping.
+ */
+ if (result != ISC_R_SUCCESS || !DNS_TRUST_PENDING(rdataset->trust))
+ goto validation_done;
+ if (validate(client, db, fname, rdataset, sigrdataset))
+ goto validation_done;
+ if (rdataset->trust != dns_trust_pending_answer ||
+ !PENDINGOK(client->query.dboptions)) {
+ dns_rdataset_disassociate(rdataset);
+ if (sigrdataset != NULL &&
+ dns_rdataset_isassociated(sigrdataset))
+ dns_rdataset_disassociate(sigrdataset);
+ if (sigrdataset == &tmprdataset)
+ sigrdataset = NULL;
+ dns_db_detachnode(db, &node);
+ dboptions &= ~DNS_DBFIND_PENDINGOK;
+ goto refind;
+ }
+ validation_done:
+ if (sigrdataset == &tmprdataset) {
+ if (dns_rdataset_isassociated(sigrdataset))
+ dns_rdataset_disassociate(sigrdataset);
+ sigrdataset = NULL;
+ }
resume:
CTRACE("query_find: resume");
diff --git a/contrib/bind9/lib/dns/include/dns/types.h b/contrib/bind9/lib/dns/include/dns/types.h
index 8dcbe57444b4..6f8944e2816d 100644
--- a/contrib/bind9/lib/dns/include/dns/types.h
+++ b/contrib/bind9/lib/dns/include/dns/types.h
@@ -241,40 +241,52 @@ enum {
dns_trust_none = 0,
#define dns_trust_none ((dns_trust_t)dns_trust_none)
- /*% Subject to DNSSEC validation but has not yet been validated */
- dns_trust_pending = 1,
-#define dns_trust_pending ((dns_trust_t)dns_trust_pending)
-
+ /*%
+ * Subject to DNSSEC validation but has not yet been validated
+ * dns_trust_pending_additional (from the additional section).
+ */
+ dns_trust_pending_additional = 1,
+#define dns_trust_pending_additional \
+ ((dns_trust_t)dns_trust_pending_additional)
+
+ dns_trust_pending_answer = 2,
+#define dns_trust_pending_answer ((dns_trust_t)dns_trust_pending_answer)
+
/*% Received in the additional section of a response. */
- dns_trust_additional = 2,
+ dns_trust_additional = 3,
#define dns_trust_additional ((dns_trust_t)dns_trust_additional)
-
- /* Received in a referral response. */
- dns_trust_glue = 3,
+
+ /* Received in a referral response. */
+ dns_trust_glue = 4,
#define dns_trust_glue ((dns_trust_t)dns_trust_glue)
-
- /* Answser from a non-authoritative server */
- dns_trust_answer = 4,
+
+ /* Answer from a non-authoritative server */
+ dns_trust_answer = 5,
#define dns_trust_answer ((dns_trust_t)dns_trust_answer)
-
+
/* Received in the authority section as part of an
authoritative response */
- dns_trust_authauthority = 5,
+ dns_trust_authauthority = 6,
#define dns_trust_authauthority ((dns_trust_t)dns_trust_authauthority)
- /* Answser from an authoritative server */
- dns_trust_authanswer = 6,
+ /* Answer from an authoritative server */
+ dns_trust_authanswer = 7,
#define dns_trust_authanswer ((dns_trust_t)dns_trust_authanswer)
-
- /* Successfully DNSSEC validated */
- dns_trust_secure = 7,
+
+ /* Successfully DNSSEC validated */
+ dns_trust_secure = 8,
#define dns_trust_secure ((dns_trust_t)dns_trust_secure)
/* This server is authoritative */
- dns_trust_ultimate = 8
+ dns_trust_ultimate = 9
#define dns_trust_ultimate ((dns_trust_t)dns_trust_ultimate)
};
+#define DNS_TRUST_PENDING(x) ((x) == dns_trust_pending_answer || \
+ (x) == dns_trust_pending_additional)
+#define DNS_TRUST_GLUE(x) ((x) == dns_trust_glue)
+
+
/*%
* Name checking severites.
*/
diff --git a/contrib/bind9/lib/dns/masterdump.c b/contrib/bind9/lib/dns/masterdump.c
index 1ffdfcb717ab..8b637ef1e243 100644
--- a/contrib/bind9/lib/dns/masterdump.c
+++ b/contrib/bind9/lib/dns/masterdump.c
@@ -774,7 +774,8 @@ dump_order_compare(const void *a, const void *b) {
static const char *trustnames[] = {
"none",
- "pending",
+ "pending-additional",
+ "pending-answer",
"additional",
"glue",
"answer",
diff --git a/contrib/bind9/lib/dns/rbtdb.c b/contrib/bind9/lib/dns/rbtdb.c
index 462a718dfa0e..4b0b4af307a3 100644
--- a/contrib/bind9/lib/dns/rbtdb.c
+++ b/contrib/bind9/lib/dns/rbtdb.c
@@ -3072,7 +3072,7 @@ cache_zonecut_callback(dns_rbtnode_t *node, dns_name_t *name, void *arg) {
}
if (dname_header != NULL &&
- (dname_header->trust != dns_trust_pending ||
+ (!DNS_TRUST_PENDING(dname_header->trust) ||
(search->options & DNS_DBFIND_PENDINGOK) != 0)) {
/*
* We increment the reference count on node to ensure that
@@ -3586,7 +3586,7 @@ cache_find(dns_db_t *db, dns_name_t *name, dns_dbversion_t *version,
if (found == NULL ||
(found->trust == dns_trust_glue &&
((options & DNS_DBFIND_GLUEOK) == 0)) ||
- (found->trust == dns_trust_pending &&
+ (DNS_TRUST_PENDING(found->trust) &&
((options & DNS_DBFIND_PENDINGOK) == 0))) {
/*
* If there is an NS rdataset at this node, then this is the
diff --git a/contrib/bind9/lib/dns/resolver.c b/contrib/bind9/lib/dns/resolver.c
index dc648c9c3673..db1a69876213 100644
--- a/contrib/bind9/lib/dns/resolver.c
+++ b/contrib/bind9/lib/dns/resolver.c
@@ -3887,6 +3887,7 @@ cache_name(fetchctx_t *fctx, dns_name_t *name, dns_adbaddrinfo_t *addrinfo,
* for it, unless it is glue.
*/
if (secure_domain && rdataset->trust != dns_trust_glue) {
+ dns_trust_t trust;
/*
* RRSIGs are validated as part of validating the
* type they cover.
@@ -3923,12 +3924,34 @@ cache_name(fetchctx_t *fctx, dns_name_t *name, dns_adbaddrinfo_t *addrinfo,
}
/*
+ * Reject out of bailiwick additional records
+ * without RRSIGs as they can't possibly validate
+ * as "secure" and as we will never never want to
+ * store these as "answers" after validation.
+ */
+ if (rdataset->trust == dns_trust_additional &&
+ sigrdataset == NULL && EXTERNAL(rdataset))
+ continue;
+
+ /*
+ * XXXMPA: If we store as "answer" after validating
+ * then we need to do bailiwick processing and
+ * also need to track whether RRsets are in or
+ * out of bailiwick. This will require a another
+ * pending trust level.
+ *
* Cache this rdataset/sigrdataset pair as
- * pending data.
+ * pending data. Track whether it was additional
+ * or not.
*/
- rdataset->trust = dns_trust_pending;
+ if (rdataset->trust == dns_trust_additional)
+ trust = dns_trust_pending_additional;
+ else
+ trust = dns_trust_pending_answer;
+
+ rdataset->trust = trust;
if (sigrdataset != NULL)
- sigrdataset->trust = dns_trust_pending;
+ sigrdataset->trust = trust;
if (!need_validation)
addedrdataset = ardataset;
else
@@ -4276,7 +4299,7 @@ ncache_message(fetchctx_t *fctx, dns_adbaddrinfo_t *addrinfo,
for (trdataset = ISC_LIST_HEAD(tname->list);
trdataset != NULL;
trdataset = ISC_LIST_NEXT(trdataset, link))
- trdataset->trust = dns_trust_pending;
+ trdataset->trust = dns_trust_pending_answer;
result = dns_message_nextname(fctx->rmessage,
DNS_SECTION_AUTHORITY);
}
diff --git a/contrib/bind9/lib/dns/validator.c b/contrib/bind9/lib/dns/validator.c
index 685434bf299e..582527972da5 100644
--- a/contrib/bind9/lib/dns/validator.c
+++ b/contrib/bind9/lib/dns/validator.c
@@ -1174,7 +1174,7 @@ get_key(dns_validator_t *val, dns_rdata_rrsig_t *siginfo) {
* We have an rrset for the given keyname.
*/
val->keyset = &val->frdataset;
- if (val->frdataset.trust == dns_trust_pending &&
+ if (DNS_TRUST_PENDING(val->frdataset.trust) &&
dns_rdataset_isassociated(&val->fsigrdataset))
{
/*
@@ -1189,7 +1189,7 @@ get_key(dns_validator_t *val, dns_rdata_rrsig_t *siginfo) {
if (result != ISC_R_SUCCESS)
return (result);
return (DNS_R_WAIT);
- } else if (val->frdataset.trust == dns_trust_pending) {
+ } else if (DNS_TRUST_PENDING(val->frdataset.trust)) {
/*
* Having a pending key with no signature means that
* something is broken.
@@ -1805,7 +1805,7 @@ validatezonekey(dns_validator_t *val) {
* We have DS records.
*/
val->dsset = &val->frdataset;
- if (val->frdataset.trust == dns_trust_pending &&
+ if (DNS_TRUST_PENDING(val->frdataset.trust) &&
dns_rdataset_isassociated(&val->fsigrdataset))
{
result = create_validator(val,
@@ -1818,7 +1818,7 @@ validatezonekey(dns_validator_t *val) {
if (result != ISC_R_SUCCESS)
return (result);
return (DNS_R_WAIT);
- } else if (val->frdataset.trust == dns_trust_pending) {
+ } else if (DNS_TRUST_PENDING(val->frdataset.trust)) {
/*
* There should never be an unsigned DS.
*/
@@ -2667,7 +2667,7 @@ proveunsecure(dns_validator_t *val, isc_boolean_t have_ds, isc_boolean_t resume)
* There is no DS. If this is a delegation,
* we maybe done.
*/
- if (val->frdataset.trust == dns_trust_pending) {
+ if (DNS_TRUST_PENDING(val->frdataset.trust)) {
result = create_fetch(val, tname,
dns_rdatatype_ds,
dsfetched2,
diff --git a/contrib/ntp/ntpd/ntp_request.c b/contrib/ntp/ntpd/ntp_request.c
index b1bc99d6f3f8..67bad2a8b9fd 100644
--- a/contrib/ntp/ntpd/ntp_request.c
+++ b/contrib/ntp/ntpd/ntp_request.c
@@ -409,6 +409,7 @@ process_private(
int mod_okay
)
{
+ static u_long quiet_until;
struct req_pkt *inpkt;
struct req_pkt_tail *tailinpkt;
struct sockaddr_storage *srcadr;
@@ -444,8 +445,14 @@ process_private(
|| (++ec, INFO_MBZ(inpkt->mbz_itemsize) != 0)
|| (++ec, rbufp->recv_length < REQ_LEN_HDR)
) {
- msyslog(LOG_ERR, "process_private: INFO_ERR_FMT: test %d failed, pkt from %s", ec, stoa(srcadr));
- req_ack(srcadr, inter, inpkt, INFO_ERR_FMT);
+ NLOG(NLOG_SYSEVENT)
+ if (current_time >= quiet_until) {
+ msyslog(LOG_ERR,
+ "process_private: drop test %d"
+ " failed, pkt from %s",
+ ec, stoa(srcadr));
+ quiet_until = current_time + 60;
+ }
return;
}
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c
index 0b600efa8f56..f8fd738192f9 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_replay.c
@@ -59,10 +59,14 @@ zfs_init_vattr(vattr_t *vap, uint64_t mask, uint64_t mode,
{
VATTR_NULL(vap);
vap->va_mask = (uint_t)mask;
- vap->va_type = IFTOVT(mode);
- vap->va_mode = mode & MODEMASK;
- vap->va_uid = (uid_t)uid;
- vap->va_gid = (gid_t)gid;
+ if (mask & AT_TYPE)
+ vap->va_type = IFTOVT(mode);
+ if (mask & AT_MODE)
+ vap->va_mode = mode & MODEMASK;
+ if (mask & AT_UID)
+ vap->va_uid = (uid_t)uid;
+ if (mask & AT_GID)
+ vap->va_gid = (gid_t)gid;
vap->va_rdev = zfs_cmpldev(rdev);
vap->va_nodeid = nodeid;
}
diff --git a/sys/conf/newvers.sh b/sys/conf/newvers.sh
index 25819e3fd444..873715820898 100644
--- a/sys/conf/newvers.sh
+++ b/sys/conf/newvers.sh
@@ -32,7 +32,7 @@
TYPE="FreeBSD"
REVISION="7.2"
-BRANCH="RELEASE-p5"
+BRANCH="RELEASE-p6"
if [ "X${BRANCH_OVERRIDE}" != "X" ]; then
BRANCH=${BRANCH_OVERRIDE}
fi