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File _service:tar_scm_kernel_repo:backport-0028-CVE-2020-25722-s4-dsdb-samldb-samldb_service_princip.patch of Package samba
From fdd25972d26455c1b1254de3d1697786ae0678a3 Mon Sep 17 00:00:00 2001 From: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Date: Wed, 20 Oct 2021 17:18:10 +1300 Subject: [PATCH 168/266] CVE-2020-25722 s4/dsdb/samldb: samldb_service_principal_names_change checks values BUG: https://bugzilla.samba.org/show_bug.cgi?id=14876 Signed-off-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org> Conflict:NA Reference:https://gitlab.com/samba-team/samba/-/commit/fdd25972d26455c1b1254de3d1697786ae0678a3 --- source4/dsdb/samdb/ldb_modules/samldb.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/source4/dsdb/samdb/ldb_modules/samldb.c b/source4/dsdb/samdb/ldb_modules/samldb.c index 391437d759d..80ca1e3afc0 100644 --- a/source4/dsdb/samdb/ldb_modules/samldb.c +++ b/source4/dsdb/samdb/ldb_modules/samldb.c @@ -4047,10 +4047,22 @@ static int samldb_service_principal_names_change(struct samldb_ctx *ac) unsigned int i, j; int ret; - el = dsdb_get_single_valued_attr(ac->msg, "dNSHostName", - ac->req->operation); - el2 = dsdb_get_single_valued_attr(ac->msg, "sAMAccountName", - ac->req->operation); + ret = dsdb_get_expected_new_values(ac, + ac->msg, + "dNSHostName", + &el, + ac->req->operation); + if (ret != LDB_SUCCESS) { + return ret; + } + ret = dsdb_get_expected_new_values(ac, + ac->msg, + "sAMAccountName", + &el2, + ac->req->operation); + if (ret != LDB_SUCCESS) { + return ret; + } if ((el == NULL) && (el2 == NULL)) { /* we are not affected */ return LDB_SUCCESS; -- 2.23.0
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