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package/openldap: add upstream security fix for CVE-2021-27212

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In OpenLDAP through 2.4.57 and 2.5.x through 2.5.1alpha, an assertion
failure in slapd can occur in the issuerAndThisUpdateCheck function via a
crafted packet, resulting in a denial of service (daemon exit) via a short
timestamp.  This is related to schema_init.c and checkTime.

For more details, see the bugtracker:
https://bugs.openldap.org/show_bug.cgi?id=9454

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
This commit is contained in:
Peter Korsgaard 2021-02-27 00:13:17 +01:00 committed by Yann E. MORIN
parent 6ca1a7c277
commit 2d6a0ea93e
2 changed files with 29 additions and 0 deletions
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26
package/openldap/0005-ITS-9454-fix-issuerAndThisUpdateCheck.patch Normal file
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@ -0,0 +1,26 @@
From 9badb73425a67768c09bcaed1a9c26c684af6c30 Mon Sep 17 00:00:00 2001
From: Howard Chu <hyc@openldap.org>
Date: Sat, 6 Feb 2021 20:52:06 +0000
Subject: [PATCH] ITS#9454 fix issuerAndThisUpdateCheck
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
---
servers/slapd/schema_init.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/servers/slapd/schema_init.c b/servers/slapd/schema_init.c
index 31be1154e..8b1e25539 100644
--- a/servers/slapd/schema_init.c
+++ b/servers/slapd/schema_init.c
@@ -3900,6 +3900,8 @@ issuerAndThisUpdateCheck(
break;
}
}
+ if ( tu->bv_len < STRLENOF("YYYYmmddHHmmssZ") ) return LDAP_INVALID_SYNTAX;
+
x.bv_val += tu->bv_len + 1;
x.bv_len -= tu->bv_len + 1;
--
2.20.1

3
package/openldap/openldap.mk
View File

@ -13,6 +13,9 @@ OPENLDAP_CPE_ID_VENDOR = openldap
OPENLDAP_INSTALL_STAGING = YES
OPENLDAP_DEPENDENCIES = host-pkgconf
# 0005-ITS-9454-fix-issuerAndThisUpdateCheck.patch
OPENLDAP_IGNORE_CVES += CVE-2021-27212
ifeq ($(BR2_PACKAGE_OPENSSL),y)
OPENLDAP_TLS = openssl
OPENLDAP_DEPENDENCIES += openssl