import slapi-nis-0.56.6-2.module+el8.4.0+10615+2234cc2c

SOURCES/cve-2021-3480-fix.patch

@@ -0,0 +1,33 @@
+From 2f2b7ecd9d6a0f5044c24e4f96464942a1d873db Mon Sep 17 00:00:00 2001
+From: Alexander Bokovoy <abokovoy@redhat.com>
+Date: Wed, 7 Apr 2021 14:40:52 +0300
+Subject: [PATCH] CVE-2021-3480: invalid bind DN crash
+
+For certain LDAP bind operations 389-ds would pass unvalidated bind DN
+to bind plugins. A first attempt to normalize the DN would find that out
+and should reject the request.
+
+Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
+---
+ src/back-sch.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/back-sch.c b/src/back-sch.c
+index a5e4c04..d806627 100644
+--- a/src/back-sch.c
++++ b/src/back-sch.c
+@@ -1988,6 +1988,11 @@ backend_locate_cb(const char *group, const char *set, bool_t flag,
+ 		rdn = slapi_rdn_new_sdn(cbdata->target_dn);
+ 		if (rdn != NULL) {
+ 			rdnstr = slapi_rdn_get_nrdn(rdn);
++			if (rdnstr == NULL) {
++				/* normalizing RDN failed, break the search */
++				slapi_rdn_free(&rdn);
++				return FALSE;
++			}
+ 			if (map_match(cbdata->state, group, set, &flag,
+ 				      strlen(rdnstr), rdnstr,
+ 				      &ndnlen, &ndn,
+-- 
+2.31.1
+

SPECS/slapi-nis.spec

@@ -11,13 +11,14 @@
 
 Name:		slapi-nis
 Version:	0.56.6
-Release:	1%{?dist}
+Release:	2%{?dist}
 Summary:	NIS Server and Schema Compatibility plugins for Directory Server
 Group:		System Environment/Daemons
 License:	GPLv2
 URL:		http://pagure.io/slapi-nis/
 Source0:	https://releases.pagure.org/slapi-nis/slapi-nis-%{version}.tar.gz
 Source1:	https://releases.pagure.org/slapi-nis/slapi-nis-%{version}.tar.gz.asc
+Patch1: 	cve-2021-3480-fix.patch
 
 BuildRequires:  autoconf
 BuildRequires:  automake
@@ -56,6 +57,7 @@ for attributes from multiple entries in the tree.
 
 %prep
 %setup -q
+%patch1 -p1
 
 %build
 autoconf --force
@@ -84,6 +86,10 @@ make check
 %{_sbindir}/nisserver-plugin-defs
 
 %changelog
+* Wed Apr 07 2021 Alexander Bokovoy <abokovoy@redhat.com> - 0.56.6-2
+- CVE 2021-3480:  idm:DL1/slapi-nis: NULL dereference (DoS) with specially crafted Binding DN
+- Resolves: rhbz#1944713
+
 * Fri Dec 04 2020 Alexander Bokovoy <abokovoy@redhat.com> - 0.56.6-1
 - Upstream release 0.56.6
 - Resolves rhbz#1891741