From 1a5dc817c0c9379bbaab14c676681b42b0039a3c Mon Sep 17 00:00:00 2001 From: Joseph Sutton Date: Tue, 18 Jan 2022 12:02:45 +1300 Subject: [PATCH] CVE-2022-0336: s4/dsdb/samldb: Don't return early when an SPN is re-added to an object If an added SPN already exists on an object, we still want to check the rest of the element values for conflicts. BUG: https://bugzilla.samba.org/show_bug.cgi?id=14950 Signed-off-by: Joseph Sutton Reviewed-by: Douglas Bagnall --- selftest/knownfail.d/ldap_spn | 1 - source4/dsdb/samdb/ldb_modules/samldb.c | 3 +-- 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/selftest/knownfail.d/ldap_spn b/selftest/knownfail.d/ldap_spn index 16dafa91b66..63f9fe02ef7 100644 --- a/selftest/knownfail.d/ldap_spn +++ b/selftest/knownfail.d/ldap_spn @@ -1,2 +1 @@ samba.tests.ldap_spn.+LdapSpnTest.test_spn_dodgy_spns -samba.tests.ldap_spn.+LdapSpnSambaOnlyTest.test_spn_add_a_conflict_along_with_a_re_added_SPN diff --git a/source4/dsdb/samdb/ldb_modules/samldb.c b/source4/dsdb/samdb/ldb_modules/samldb.c index db3883eb527..24971d521aa 100644 --- a/source4/dsdb/samdb/ldb_modules/samldb.c +++ b/source4/dsdb/samdb/ldb_modules/samldb.c @@ -4006,8 +4006,7 @@ static int samldb_spn_uniqueness_check(struct samldb_ctx *ac, ac->msg->dn); if (ret == LDB_ERR_COMPARE_TRUE) { DBG_INFO("SPN %s re-added to the same object\n", spn); - talloc_free(tmp_ctx); - return LDB_SUCCESS; + continue; } if (ret != LDB_SUCCESS) { DBG_ERR("SPN %s failed direct uniqueness check\n", spn);