From: Howard Chu <hyc@openldap.org>
Date: Thu, 20 Oct 2022 11:38:02 +0000 (+0100)
Subject: ITS#9937 libldap: fix put_simple_filter() with invalid filter
X-Git-Tag: OPENLDAP_REL_ENG_2_5_14~55
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6cda961a8deb294e7375af4595a9605c17f1c8fb;p=thirdparty%2Fopenldap.git

ITS#9937 libldap: fix put_simple_filter() with invalid filter

Add check for trivial input string.
---

diff --git a/libraries/libldap/filter.c b/libraries/libldap/filter.c
index 064b2ea381..e158fd1fe3 100644
--- a/libraries/libldap/filter.c
+++ b/libraries/libldap/filter.c
@@ -555,6 +555,8 @@ put_simple_filter(
 	Debug1( LDAP_DEBUG_TRACE, "put_simple_filter: \"%s\"\n",
 		str );
 
+	if ( str[0] == '=' ) return -1;
+
 	str = LDAP_STRDUP( str );
 	if( str == NULL ) return -1;