Import tests for large DNS messages fix

Tests part of fixes of CVE-2023-4408.

Related: RHEL-25348
; Related: CVE-2023-4408
This commit is contained in:
Petr Menšík 2024-02-19 12:35:59 +01:00
parent 329c53c51c
commit b038cc79ce
3 changed files with 170 additions and 0 deletions

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@ -0,0 +1,88 @@
From d258422d3e653621ce6340ba9af0153f8d4e8c07 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Sur=C3=BD?= <ondrej@isc.org>
Date: Sun, 11 Feb 2024 00:49:32 +0100
Subject: [PATCH] Test case insensitive matching in isc_ht hash table
implementation
The case insensitive matching in isc_ht was basically completely broken
as only the hashvalue computation was case insensitive, but the key
comparison was always case sensitive.
Import only test part from upstream.
(cherry picked from commit 175655b771fd17b06dfb8cfb29eaadf0f3b6a8b5)
(cherry picked from upstream commit f493a8394102b0aeb101d5dc2f963004c8741175)
---
lib/isc/tests/ht_test.c | 53 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 53 insertions(+)
diff --git a/lib/isc/tests/ht_test.c b/lib/isc/tests/ht_test.c
index 74d95c1..65502b5 100644
--- a/lib/isc/tests/ht_test.c
+++ b/lib/isc/tests/ht_test.c
@@ -334,9 +334,62 @@ isc_ht_iterator_test(void **state) {
test_ht_iterator();
}
+static void
+isc_ht_case(void **state) {
+ UNUSED(state);
+
+ isc_ht_t *ht = NULL;
+ void *f = NULL;
+ isc_result_t result = ISC_R_UNSET;
+
+ unsigned char lower[16] = { "test case" };
+ unsigned char same[16] = { "test case" };
+ unsigned char upper[16] = { "TEST CASE" };
+ unsigned char mixed[16] = { "tEsT CaSe" };
+
+ isc_ht_init(&ht, test_mctx, 8, ISC_HT_CASE_SENSITIVE);
+ assert_non_null(ht);
+
+ result = isc_ht_add(ht, lower, 16, (void *)lower);
+ assert_int_equal(result, ISC_R_SUCCESS);
+
+ result = isc_ht_add(ht, same, 16, (void *)same);
+ assert_int_equal(result, ISC_R_EXISTS);
+
+ result = isc_ht_add(ht, upper, 16, (void *)upper);
+ assert_int_equal(result, ISC_R_SUCCESS);
+
+ result = isc_ht_find(ht, mixed, 16, &f);
+ assert_int_equal(result, ISC_R_NOTFOUND);
+ assert_null(f);
+
+ isc_ht_destroy(&ht);
+ assert_null(ht);
+
+ isc_ht_init(&ht, test_mctx, 8, ISC_HT_CASE_INSENSITIVE);
+ assert_non_null(ht);
+
+ result = isc_ht_add(ht, lower, 16, (void *)lower);
+ assert_int_equal(result, ISC_R_SUCCESS);
+
+ result = isc_ht_add(ht, same, 16, (void *)same);
+ assert_int_equal(result, ISC_R_EXISTS);
+
+ result = isc_ht_add(ht, upper, 16, (void *)upper);
+ assert_int_equal(result, ISC_R_EXISTS);
+
+ result = isc_ht_find(ht, mixed, 16, &f);
+ assert_int_equal(result, ISC_R_SUCCESS);
+ assert_ptr_equal(f, &lower);
+
+ isc_ht_destroy(&ht);
+ assert_null(ht);
+}
+
int
main(void) {
const struct CMUnitTest tests[] = {
+ cmocka_unit_test(isc_ht_case),
cmocka_unit_test(isc_ht_20),
cmocka_unit_test(isc_ht_8),
cmocka_unit_test(isc_ht_1),
--
2.43.0

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@ -0,0 +1,75 @@
From aa1b0fc4b24d26233db30c85ae3609e54e9fa6d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ond=C5=99ej=20Sur=C3=BD?= <ondrej@isc.org>
Date: Sun, 11 Feb 2024 09:13:43 +0100
Subject: [PATCH] Add a system test for mixed-case data for the same owner
We were missing a test where a single owner name would have multiple
types with a different case. The generated RRSIGs and NSEC records will
then have different case than the signed records and message parser have
to cope with that and treat everything as the same owner.
(cherry picked from commit a114042059ecbbc94ae0f604ca681323a75af480)
(cherry picked from upstream commit b9c10a194da3358204f5ba7d91e55332db435614)
---
bin/tests/system/dnssec/ns3/secure.example.db.in | 5 +++++
bin/tests/system/dnssec/ns3/sign.sh | 4 +++-
bin/tests/system/dnssec/tests.sh | 15 +++++++++++++++
3 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/bin/tests/system/dnssec/ns3/secure.example.db.in b/bin/tests/system/dnssec/ns3/secure.example.db.in
index 27f2b24..599566e 100644
--- a/bin/tests/system/dnssec/ns3/secure.example.db.in
+++ b/bin/tests/system/dnssec/ns3/secure.example.db.in
@@ -45,3 +45,8 @@ rrsigonly A 10.0.0.29
cnameandkey CNAME @
cnamenokey CNAME @
dnameandkey DNAME @
+
+mixedcase A 10.0.0.30
+mixedCASE TXT "mixed case"
+MIXEDcase AAAA 2002::
+mIxEdCaSe LOC 37 52 56.788 N 121 54 55.02 W 1120m 10m 100m 10m
diff --git a/bin/tests/system/dnssec/ns3/sign.sh b/bin/tests/system/dnssec/ns3/sign.sh
index 80d412e..d94f382 100644
--- a/bin/tests/system/dnssec/ns3/sign.sh
+++ b/bin/tests/system/dnssec/ns3/sign.sh
@@ -86,7 +86,9 @@ keyname=$("$KEYGEN" -q -a "$DEFAULT_ALGORITHM" -b "$DEFAULT_BITS" -n zone "$zone
cat "$infile" "$cnameandkey.key" "$dnameandkey.key" "$keyname.key" > "$zonefile"
-"$SIGNER" -P -o "$zone" "$zonefile" > /dev/null
+"$SIGNER" -P -D -o "$zone" "$zonefile" >/dev/null
+cat "$zonefile" "$zonefile".signed >"$zonefile".tmp
+mv "$zonefile".tmp "$zonefile".signed
zone=bogus.example.
infile=bogus.example.db.in
diff --git a/bin/tests/system/dnssec/tests.sh b/bin/tests/system/dnssec/tests.sh
index fe95c8d..0c03970 100644
--- a/bin/tests/system/dnssec/tests.sh
+++ b/bin/tests/system/dnssec/tests.sh
@@ -762,6 +762,21 @@ n=$((n+1))
test "$ret" -eq 0 || echo_i "failed"
status=$((status+ret))
+echo_i "checking mixed-case positive validation ($n)"
+ret=0
+for type in a txt aaaa loc; do
+ dig_with_opts +noauth mixedcase.secure.example. \
+ @10.53.0.3 $type >dig.out.$type.ns3.test$n || ret=1
+ dig_with_opts +noauth mixedcase.secure.example. \
+ @10.53.0.4 $type >dig.out.$type.ns4.test$n || ret=1
+ digcomp --lc dig.out.$type.ns3.test$n dig.out.$type.ns4.test$n || ret=1
+ grep "status: NOERROR" dig.out.$type.ns4.test$n >/dev/null || ret=1
+ grep "flags:.*ad.*QUERY" dig.out.$type.ns4.test$n >/dev/null || ret=1
+done
+n=$((n + 1))
+test "$ret" -eq 0 || echo_i "failed"
+status=$((status + ret))
+
echo_i "checking multi-stage positive validation NSEC/NSEC3 ($n)"
ret=0
dig_with_opts +noauth a.nsec3.example. \
--
2.43.0

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@ -134,6 +134,10 @@ Patch195: bind-9.16-CVE-2023-5517.patch
Patch196: bind-9.16-CVE-2023-5679.patch
Patch197: bind-9.16-CVE-2023-6516.patch
Patch198: bind-9.16-CVE-2023-50387.patch
# https://gitlab.isc.org/isc-projects/bind9/commit/f493a8394102b0aeb101d5dc2f963004c8741175
Patch199: bind-9.16-CVE-2023-4408-test1.patch
# https://gitlab.isc.org/isc-projects/bind9/commit/b9c10a194da3358204f5ba7d91e55332db435614
Patch200: bind-9.16-CVE-2023-4408-test2.patch
%{?systemd_ordering}
Requires: coreutils
@ -452,6 +456,8 @@ in HTML and PDF format.
%patch196 -p1 -b .CVE-2023-5679
%patch197 -p1 -b .CVE-2023-6516
%patch198 -p1 -b .CVE-2023-50387
%patch199 -p1
%patch200 -p1
%if %{with PKCS11}
%patch135 -p1 -b .config-pkcs11
@ -1180,6 +1186,7 @@ fi;
condition (CVE-2023-6516)
- Prevent increased CPU consumption in DNSSEC validator (CVE-2023-50387
CVE-2023-50868)
- Import tests for large DNS messages fix
* Wed Sep 20 2023 Petr Menšík <pemensik@redhat.com> - 32:9.16.23-0.16
- Limit the amount of recursion possible in control channel (CVE-2023-3341)