import unbound-1.16.2-5.el8

This commit is contained in:
CentOS Sources 2023-05-16 06:04:34 +00:00 committed by Stepan Oksanichenko
parent af20082598
commit caf6c2c1f9
5 changed files with 234 additions and 28 deletions

1
.gitignore vendored
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@ -1 +1,2 @@
SOURCES/icannbundle.pem
SOURCES/unbound-1.16.2.tar.gz

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@ -1 +1,2 @@
9a2f73302a13f38dbf7cb3c5e34eb1665d2f156f SOURCES/icannbundle.pem
9aea0e923b9d6779b5bc360094e24a4017e2bb25 SOURCES/unbound-1.16.2.tar.gz

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@ -1,21 +0,0 @@
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

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@ -0,0 +1,218 @@
From 7af485f0fc9926425681ba0280ab6c2c8dd04530 Mon Sep 17 00:00:00 2001
From: "W.C.A. Wijngaards" <wouter@nlnetlabs.nl>
Date: Wed, 21 Sep 2022 11:10:38 +0200
Subject: [PATCH] - Patch for CVE-2022-3204 Non-Responsive Delegation Attack.
---
unbound-1.16.2/iterator/iter_delegpt.c | 3 +++
unbound-1.16.2/iterator/iter_delegpt.h | 2 ++
unbound-1.16.2/iterator/iter_utils.c | 3 +++
unbound-1.16.2/iterator/iter_utils.h | 9 +++++++
unbound-1.16.2/iterator/iterator.c | 36 +++++++++++++++++++++++++-
unbound-1.16.2/services/cache/dns.c | 3 +++
unbound-1.16.2/services/mesh.c | 7 +++++
unbound-1.16.2/services/mesh.h | 11 ++++++++
8 files changed, 73 insertions(+), 1 deletion(-)
diff --git a/unbound-1.16.2/iterator/iter_delegpt.c b/unbound-1.16.2/iterator/iter_delegpt.c
index 4bffa1b..fd07aaa 100644
--- a/unbound-1.16.2/iterator/iter_delegpt.c
+++ b/unbound-1.16.2/iterator/iter_delegpt.c
@@ -78,6 +78,7 @@ struct delegpt* delegpt_copy(struct delegpt* dp, struct regional* region)
if(!delegpt_add_ns(copy, region, ns->name, ns->lame,
ns->tls_auth_name, ns->port))
return NULL;
+ copy->nslist->cache_lookup_count = ns->cache_lookup_count;
copy->nslist->resolved = ns->resolved;
copy->nslist->got4 = ns->got4;
copy->nslist->got6 = ns->got6;
@@ -121,6 +122,7 @@ delegpt_add_ns(struct delegpt* dp, struct regional* region, uint8_t* name,
ns->namelen = len;
dp->nslist = ns;
ns->name = regional_alloc_init(region, name, ns->namelen);
+ ns->cache_lookup_count = 0;
ns->resolved = 0;
ns->got4 = 0;
ns->got6 = 0;
@@ -620,6 +622,7 @@ int delegpt_add_ns_mlc(struct delegpt* dp, uint8_t* name, uint8_t lame,
}
ns->next = dp->nslist;
dp->nslist = ns;
+ ns->cache_lookup_count = 0;
ns->resolved = 0;
ns->got4 = 0;
ns->got6 = 0;
diff --git a/unbound-1.16.2/iterator/iter_delegpt.h b/unbound-1.16.2/iterator/iter_delegpt.h
index 62c8edc..586597a 100644
--- a/unbound-1.16.2/iterator/iter_delegpt.h
+++ b/unbound-1.16.2/iterator/iter_delegpt.h
@@ -101,6 +101,8 @@ struct delegpt_ns {
uint8_t* name;
/** length of name */
size_t namelen;
+ /** number of cache lookups for the name */
+ int cache_lookup_count;
/**
* If the name has been resolved. false if not queried for yet.
* true if the A, AAAA queries have been generated.
diff --git a/unbound-1.16.2/iterator/iter_utils.c b/unbound-1.16.2/iterator/iter_utils.c
index 3e13e59..56b184a 100644
--- a/unbound-1.16.2/iterator/iter_utils.c
+++ b/unbound-1.16.2/iterator/iter_utils.c
@@ -1209,6 +1209,9 @@ int iter_lookup_parent_glue_from_cache(struct module_env* env,
struct delegpt_ns* ns;
size_t num = delegpt_count_targets(dp);
for(ns = dp->nslist; ns; ns = ns->next) {
+ if(ns->cache_lookup_count > ITERATOR_NAME_CACHELOOKUP_MAX_PSIDE)
+ continue;
+ ns->cache_lookup_count++;
/* get cached parentside A */
akey = rrset_cache_lookup(env->rrset_cache, ns->name,
ns->namelen, LDNS_RR_TYPE_A, qinfo->qclass,
diff --git a/unbound-1.16.2/iterator/iter_utils.h b/unbound-1.16.2/iterator/iter_utils.h
index 8583fde..850be96 100644
--- a/unbound-1.16.2/iterator/iter_utils.h
+++ b/unbound-1.16.2/iterator/iter_utils.h
@@ -62,6 +62,15 @@ struct ub_packed_rrset_key;
struct module_stack;
struct outside_network;
+/* max number of lookups in the cache for target nameserver names.
+ * This stops, for large delegations, N*N lookups in the cache. */
+#define ITERATOR_NAME_CACHELOOKUP_MAX 3
+/* max number of lookups in the cache for parentside glue for nameserver names
+ * This stops, for larger delegations, N*N lookups in the cache.
+ * It is a little larger than the nonpside max, so it allows a couple extra
+ * lookups of parent side glue. */
+#define ITERATOR_NAME_CACHELOOKUP_MAX_PSIDE 5
+
/**
* Process config options and set iterator module state.
* Sets default values if no config is found.
diff --git a/unbound-1.16.2/iterator/iterator.c b/unbound-1.16.2/iterator/iterator.c
index 25e5cfe..da9b799 100644
--- a/unbound-1.16.2/iterator/iterator.c
+++ b/unbound-1.16.2/iterator/iterator.c
@@ -1218,6 +1218,15 @@ generate_dnskey_prefetch(struct module_qstate* qstate,
(qstate->query_flags&BIT_RD) && !(qstate->query_flags&BIT_CD)){
return;
}
+ /* we do not generate this prefetch when the query list is full,
+ * the query is fetched, if needed, when the validator wants it.
+ * At that time the validator waits for it, after spawning it.
+ * This means there is one state that uses cpu and a socket, the
+ * spawned while this one waits, and not several at the same time,
+ * if we had created the lookup here. And this helps to keep
+ * the total load down, but the query still succeeds to resolve. */
+ if(mesh_jostle_exceeded(qstate->env->mesh))
+ return;
/* if the DNSKEY is in the cache this lookup will stop quickly */
log_nametypeclass(VERB_ALGO, "schedule dnskey prefetch",
@@ -1911,6 +1920,14 @@ query_for_targets(struct module_qstate* qstate, struct iter_qstate* iq,
return 0;
}
query_count++;
+ /* If the mesh query list is full, exit the loop here.
+ * This makes the routine spawn one query at a time,
+ * and this means there is no query state load
+ * increase, because the spawned state uses cpu and a
+ * socket while this state waits for that spawned
+ * state. Next time we can look up further targets */
+ if(mesh_jostle_exceeded(qstate->env->mesh))
+ break;
}
/* Send the A request. */
if(ie->supports_ipv4 &&
@@ -1925,6 +1942,9 @@ query_for_targets(struct module_qstate* qstate, struct iter_qstate* iq,
return 0;
}
query_count++;
+ /* If the mesh query list is full, exit the loop. */
+ if(mesh_jostle_exceeded(qstate->env->mesh))
+ break;
}
/* mark this target as in progress. */
@@ -2085,6 +2105,15 @@ processLastResort(struct module_qstate* qstate, struct iter_qstate* iq,
}
ns->done_pside6 = 1;
query_count++;
+ if(mesh_jostle_exceeded(qstate->env->mesh)) {
+ /* Wait for the lookup; do not spawn multiple
+ * lookups at a time. */
+ verbose(VERB_ALGO, "try parent-side glue lookup");
+ iq->num_target_queries += query_count;
+ target_count_increase(iq, query_count);
+ qstate->ext_state[id] = module_wait_subquery;
+ return 0;
+ }
}
if(ie->supports_ipv4 && !ns->done_pside4) {
/* Send the A request. */
@@ -2560,7 +2589,12 @@ processQueryTargets(struct module_qstate* qstate, struct iter_qstate* iq,
if(iq->depth < ie->max_dependency_depth
&& iq->num_target_queries == 0
&& (!iq->target_count || iq->target_count[TARGET_COUNT_NX]==0)
- && iq->sent_count < TARGET_FETCH_STOP) {
+ && iq->sent_count < TARGET_FETCH_STOP
+ /* if the mesh query list is full, then do not waste cpu
+ * and sockets to fetch promiscuous targets. They can be
+ * looked up when needed. */
+ && !mesh_jostle_exceeded(qstate->env->mesh)
+ ) {
tf_policy = ie->target_fetch_policy[iq->depth];
}
diff --git a/unbound-1.16.2/services/cache/dns.c b/unbound-1.16.2/services/cache/dns.c
index 6bca8d8..b6e5697 100644
--- a/unbound-1.16.2/services/cache/dns.c
+++ b/unbound-1.16.2/services/cache/dns.c
@@ -404,6 +404,9 @@ cache_fill_missing(struct module_env* env, uint16_t qclass,
struct ub_packed_rrset_key* akey;
time_t now = *env->now;
for(ns = dp->nslist; ns; ns = ns->next) {
+ if(ns->cache_lookup_count > ITERATOR_NAME_CACHELOOKUP_MAX)
+ continue;
+ ns->cache_lookup_count++;
akey = rrset_cache_lookup(env->rrset_cache, ns->name,
ns->namelen, LDNS_RR_TYPE_A, qclass, 0, now, 0);
if(akey) {
diff --git a/unbound-1.16.2/services/mesh.c b/unbound-1.16.2/services/mesh.c
index 30bcf7c..2a41194 100644
--- a/unbound-1.16.2/services/mesh.c
+++ b/unbound-1.16.2/services/mesh.c
@@ -2240,3 +2240,10 @@ mesh_serve_expired_callback(void* arg)
mesh_do_callback(mstate, LDNS_RCODE_NOERROR, msg->rep, c, &tv);
}
}
+
+int mesh_jostle_exceeded(struct mesh_area* mesh)
+{
+ if(mesh->all.count < mesh->max_reply_states)
+ return 0;
+ return 1;
+}
diff --git a/unbound-1.16.2/services/mesh.h b/unbound-1.16.2/services/mesh.h
index 3be9b63..25121a6 100644
--- a/unbound-1.16.2/services/mesh.h
+++ b/unbound-1.16.2/services/mesh.h
@@ -685,4 +685,15 @@ struct dns_msg*
mesh_serve_expired_lookup(struct module_qstate* qstate,
struct query_info* lookup_qinfo);
+/**
+ * See if the mesh has space for more queries. You can allocate queries
+ * anyway, but this checks for the allocated space.
+ * @param mesh: mesh area.
+ * @return true if the query list is full.
+ * It checks the number of all queries, not just number of reply states,
+ * that have a client address. So that spawned queries count too,
+ * that were created by the iterator, or other modules.
+ */
+int mesh_jostle_exceeded(struct mesh_area* mesh);
+
#endif /* SERVICES_MESH_H */
--
2.37.3

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@ -34,7 +34,7 @@
Summary: Validating, recursive, and caching DNS(SEC) resolver
Name: unbound
Version: 1.16.2
Release: 2%{?extra_version:.%{extra_version}}%{?dist}
Release: 5%{?extra_version:.%{extra_version}}%{?dist}
License: BSD
Url: https://www.unbound.net/
Source: https://www.unbound.net/downloads/%{name}-%{version}%{?extra_version}.tar.gz
@ -60,6 +60,8 @@ Source18: https://nlnetlabs.nl/downloads/%{name}/%{name}-%{version}%{?extra_vers
# Makes possible backward binary compatibility with a new features
Patch1: unbound-1.15-soversion2-compat.patch
Patch2: unbound-1.15-source-compat.patch
# https://github.com/NLnetLabs/unbound/commit/137719522a8ea5b380fbb6206d2466f402f5b554
Patch3: unbound-1.16-CVE-2022-3204.patch
BuildRequires: gdb
BuildRequires: gcc, make
@ -161,6 +163,7 @@ pushd %{pkgname}
%patch1 -p2 -b .solib2-compat
%patch2 -p1 -b .srccompat
%patch3 -p2 -b .CVE-2022-3204
# copy common doc files - after here, since it may be patched
@ -272,12 +275,6 @@ rm %{buildroot}%{python2_sitearch}/*.la
rm %{buildroot}%{python3_sitearch}/*.la
%endif # with_python3
# create softlink for all functions of libunbound man pages
for mpage in ub_ctx ub_result ub_ctx_create ub_ctx_delete ub_ctx_set_option ub_ctx_get_option ub_ctx_config ub_ctx_set_fwd ub_ctx_resolvconf ub_ctx_hosts ub_ctx_add_ta ub_ctx_add_ta_file ub_ctx_trustedkeys ub_ctx_debugout ub_ctx_debuglevel ub_ctx_async ub_poll ub_wait ub_fd ub_process ub_resolve ub_resolve_async ub_cancel ub_resolve_free ub_strerror ub_ctx_print_local_zones ub_ctx_zone_add ub_ctx_zone_remove ub_ctx_data_add ub_ctx_data_remove;
do
echo ".so man3/libunbound.3" > %{buildroot}%{_mandir}/man3/$mpage ;
done
mkdir -p %{buildroot}%{_localstatedir}/run/unbound
# Install directories for easier config file drop in
@ -433,6 +430,16 @@ popd
%verify(not md5 size mtime) %{_sharedstatedir}/%{name}/root.key
%changelog
* Sat Oct 15 2022 Petr Menšík <pemensik@redhat.com> - 1.16.2-5
- Stop creating wrong devel manual pages (#2135322)
* Sat Oct 15 2022 Petr Menšík <pemensik@redhat.com> - 1.16.2-4
- Apply correctly previous change (CVE-2022-3204)
* Tue Oct 11 2022 Petr Menšík <pemensik@redhat.com> - 1.16.2-3
- Fix NRDelegation attack leading to uncontrolled resource consumption
(CVE-2022-3204)
* Tue Aug 09 2022 Petr Menšík <pemensik@redhat.com> - 1.16.2-2
- Require openssl tool for unbound-keygen (#2018806)