samba/backport-0020-CVE-2020-25722-s4-dsdb-samldb-samldb_schema_add_hand.patch
haochenstar 8378df4821 fix CVE-2020-25717,CVE-2020-25718,CVE-2020-25719,CVE-2020-25721,CVE-2020-25722,CVE-2016-2124,CVE-2021-3738
(cherry picked from commit aee849c6c0708056f62f6445e3b5274d1cec6408)
2022-01-19 11:41:35 +08:00

44 lines
1.3 KiB
Diff

From 466620563bdbb31858e82462cdc0ae62605c9206 Mon Sep 17 00:00:00 2001
From: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Date: Wed, 20 Oct 2021 17:12:49 +1300
Subject: [PATCH 160/266] CVE-2020-25722 s4/dsdb/samldb:
samldb_schema_add_handle_linkid() checks all 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/466620563bdbb31858e82462cdc0ae62605c9206
---
source4/dsdb/samdb/ldb_modules/samldb.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/source4/dsdb/samdb/ldb_modules/samldb.c b/source4/dsdb/samdb/ldb_modules/samldb.c
index 5d3e0f9771c..39533266aeb 100644
--- a/source4/dsdb/samdb/ldb_modules/samldb.c
+++ b/source4/dsdb/samdb/ldb_modules/samldb.c
@@ -739,8 +739,15 @@ static int samldb_schema_add_handle_linkid(struct samldb_ctx *ac)
schema = dsdb_get_schema(ldb, ac);
schema_dn = ldb_get_schema_basedn(ldb);
- el = dsdb_get_single_valued_attr(ac->msg, "linkID",
- ac->req->operation);
+ ret = dsdb_get_expected_new_values(ac,
+ ac->msg,
+ "linkID",
+ &el,
+ ac->req->operation);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
if (el == NULL) {
return LDB_SUCCESS;
}
--
2.23.0