import slapi-nis-0.56.6-3.module+el8.5.0+11645+9d3a3007

This commit is contained in:
CentOS Sources 2021-10-05 07:13:01 -04:00 committed by Stepan Oksanichenko
parent 836b184911
commit cc94b227a8
4 changed files with 141 additions and 1 deletions

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@ -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

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@ -0,0 +1,41 @@
From d18b1d105c928363eddec87af37fda0757cfb440 Mon Sep 17 00:00:00 2001
From: Alexander Bokovoy <abokovoy@redhat.com>
Date: Thu, 1 Jul 2021 11:37:38 +0300
Subject: [PATCH] back-sch: reuse backend_should_descend
When backend_search_find_set_dn_cb() is called, use the same logic as in
other callbacks -- identify whether we should descend into the group by
using backend_should_descend().
The issue was introduced in 2015 with ID Views support but was masked
until 61ea8f6a104da25329e301a8f56944f860de8177 as we always felt through
to the full scan of the groups anyway. with the latter change the
fell-through part was removed.
Resolves: rhbz#1958909
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
Signed-off-by: Thierry Bordaz <tbordaz@redhat.com>
---
src/back-sch.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/src/back-sch.c b/src/back-sch.c
index d806627..0ed06fb 100644
--- a/src/back-sch.c
+++ b/src/back-sch.c
@@ -1369,8 +1369,9 @@ backend_search_find_set_dn_cb(const char *group, void *cb_data)
/* Check the group itself. */
group_dn = slapi_sdn_new_dn_byval(group);
- if (slapi_sdn_scope_test(group_dn, cbdata->target_dn,
- cbdata->scope) == 1) {
+ if (backend_should_descend(group_dn,
+ cbdata->target_dn,
+ cbdata->scope)) {
cbdata->answer = TRUE;
slapi_sdn_free(&group_dn);
return TRUE;
--
2.31.1

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@ -0,0 +1,52 @@
From 0f700cf71f5531fb6c863990216aa1eb88970dc8 Mon Sep 17 00:00:00 2001
From: Alexander Bokovoy <abokovoy@redhat.com>
Date: Wed, 16 Jun 2021 11:08:21 +0300
Subject: [PATCH] back-sch-nss: only loop if asked to try again
slapi-nis uses sss-idmap library to discover user group membership. Its
sss_nss_getgrouplist_timeout() function can return timeout errors as
well which might cause a busy looping. sss_nss_getgrouplist_timeout()
will return ERANGE which is translated by slapi-nis to NSS_STATUS_TRYAGAIN.
Fixes: rhbz#1967179
Signed-off-by: Alexander Bokovoy <abokovoy@redhat.com>
---
src/back-sch-nss.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/src/back-sch-nss.c b/src/back-sch-nss.c
index df04a96..b595f3b 100644
--- a/src/back-sch-nss.c
+++ b/src/back-sch-nss.c
@@ -589,19 +589,22 @@ repeat:
return NULL;
}
- do {
+ for(rc = NSS_STATUS_TRYAGAIN; rc == NSS_STATUS_TRYAGAIN;) {
rc = backend_nss_getgrouplist(ctx, user_name, pwd.pw_gid,
grouplist, &ngroups,
&lerrno);
- if ((rc != NSS_STATUS_SUCCESS)) {
- tmp_list = realloc(grouplist, ngroups * sizeof(gid_t));
- if (tmp_list == NULL) {
+ if (rc == NSS_STATUS_TRYAGAIN) {
+ tmp_list = NULL;
+ if (lerrno == ERANGE) {
+ tmp_list = realloc(grouplist, ngroups * sizeof(gid_t));
+ }
+ if ((tmp_list == NULL) || (lerrno == ENOMEM)) {
free(grouplist);
return NULL;
}
grouplist = tmp_list;
}
- } while (rc != NSS_STATUS_SUCCESS);
+ }
entries = calloc(ngroups + 1, sizeof(entries[0]));
if (entries == NULL) {
--
2.31.1

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@ -11,13 +11,16 @@
Name: slapi-nis
Version: 0.56.6
Release: 1%{?dist}
Release: 3%{?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
Patch2: slapi-nis-bz1978189.patch
Patch3: slapi-nis-bz1958909.patch
BuildRequires: autoconf
BuildRequires: automake
@ -56,6 +59,9 @@ for attributes from multiple entries in the tree.
%prep
%setup -q
%patch1 -p1
%patch2 -p1
%patch3 -p1
%build
autoconf --force
@ -84,6 +90,14 @@ make check
%{_sbindir}/nisserver-plugin-defs
%changelog
* Thu Jul 01 2021 Alexander Bokovoy <abokovoy@redhat.com> - 0.56.6-3
- Resolves: rhbz#1958909 - fix regression for scoped searches in compat tree
- Resolves: rhbz#1978189 - better handle error response from libsss_nss_idmap
* 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