Additional data points: unauthenticated binds are not allowed, ldapsearch correctly returns when Invalid credentials are entered, 389-dsgw-1.1.11-1.el6.x86_64 on a rhel6 server.

The incorrect behavior can be replicated by taking a brand new server, pointing /etc/dirsrv/dsgw/default.conf at the ldap server, copying dsgw-httpd.conf into /etc/httpd/conf.d, giving apache write access to /var/run/dirsrv/dsgw/cookies, and browsing to http://server/dsgw then trying to authenticate.

The following were created as a workaround, but it causes a separate set of issues:

{{{
[tstrothe@directory dsgw-cgi-bin]$ cat auth.wrapper

! /usr/bin/perl

use CGI qw(:standard);
use strict;
use warnings;

my $DSGWRoot = '/usr/share/dirsrv/dsgw';
my $DSGWConfigFileLocation = "$DSGWRoot/config/dsgw.conf";

output the headers needed for every page

print "Expires: Tue, 18 May 2999 12:00:00 GMT\n";

my $authresult = /usr/lib64/dirsrv/dsgw-cgi-bin/auth.orig;

my $validity = /usr/lib64/dirsrv/dsgw-cgi-bin/dosearch;
if ( index( $validity, "Invalid credentials" ) != -1 )
{
print $validity;
print
;
/usr/lib64/dirsrv/dsgw-cgi-bin/unauth;
print
;
print "<input type=button onClick=parent.location='<a href="https://directory.its.umd.umich.edu/'">https://directory.its.umd.umich.edu/' value='Go Home'>";
print
;
exit 0;
}
else
{
print $authresult;
print "<input type=button onClick=parent.location='<a href="https://directory.its.umd.umich.edu/'">https://directory.its.umd.umich.edu/' value='Go Home'>";
};
[tstrothe@directory dsgw-cgi-bin]$ cat doauth.wrapper

! /usr/bin/perl

use CGI qw(:standard);
use strict;
use warnings;

my $DSGWRoot = '/usr/share/dirsrv/dsgw';
my $DSGWConfigFileLocation = "$DSGWRoot/config/dsgw.conf";

output the headers needed for every page

print "Expires: Tue, 18 May 2999 12:00:00 GMT\n";

my $authresult = /usr/lib64/dirsrv/dsgw-cgi-bin/doauth.orig;
my $validity = /usr/lib64/dirsrv/dsgw-cgi-bin/dosearch;
if ( index( $validity, "Invalid credentials" ) != -1 )
{
print $validity;
print
;
/usr/lib64/dirsrv/dsgw-cgi-bin/unauth;
print
;
print "<input type=button onClick=parent.location='<a href="https://directory.its.umd.umich.edu/'">https://directory.its.umd.umich.edu/' value='Go Home'>";
exit 0;
}
else
{
print $authresult;
};
[tstrothe@directory dsgw-cgi-bin]$ cat lang.wrapper

! /usr/bin/perl

use CGI qw(:standard);
use strict;
use warnings;

my $DSGWRoot = '/usr/share/dirsrv/dsgw';
my $DSGWConfigFileLocation = "$DSGWRoot/config/dsgw.conf";

output the headers needed for every page

print "Expires: Tue, 18 May 2999 12:00:00 GMT\n";

my $cgi = new CGI;
my $UID = $cgi->param('uid');
my $templateName = $cgi->param('templateName');
my $cookie = $cgi->cookie('nsdsgwauth');

my $AuthDN;
if ($cgi->cookie('nsdsgwauth') =~ /^[a-f0-9]+:(.*)$/i)
{
$AuthDN = $1;
};
my ($AuthID) = split(',', $AuthDN);
my ($AuthPassword) = split(':', $cookie);

if ( $AuthPassword eq '[unauthenticated]' )
{
system ( "/usr/lib64/dirsrv/dsgw-cgi-bin/lang.orig" );
}
else
{
my $validity = /usr/lib64/dirsrv/dsgw-cgi-bin/dosearch;

if ( index( $validity, "Invalid credentials" ) != -1 )
{
print $validity;
print
;
system ( "/usr/lib64/dirsrv/dsgw-cgi-bin/unauth" );
print
;
print "<input type=button onClick=parent.location='<a href="https://directory.its.umd.umich.edu/'">https://directory.its.umd.umich.edu/' value='Go Home'>";
exit 0;
};
system ( "/usr/lib64/dirsrv/dsgw-cgi-bin/lang.orig" );
};

[tstrothe@directory dsgw-cgi-bin]$ cat search.wrapper

! /usr/bin/perl

use CGI qw(:standard);
use strict;
use warnings;

my $DSGWRoot = '/usr/share/dirsrv/dsgw';
my $DSGWConfigFileLocation = "$DSGWRoot/config/dsgw.conf";

output the headers needed for every page

print "Expires: Tue, 18 May 2999 12:00:00 GMT\n";

my $cgi = new CGI;
my $UID = $cgi->param('uid');
my $templateName = $cgi->param('templateName');
my $cookie = $cgi->cookie('nsdsgwauth');

my $AuthDN;
if ($cgi->cookie('nsdsgwauth') =~ /^[a-f0-9]+:(.*)$/i)
{
$AuthDN = $1;
};
my ($AuthID) = split(',', $AuthDN);
my ($AuthPassword) = split(':', $cookie);

if ( $AuthPassword eq '[unauthenticated]' )
{
system ( "/usr/lib64/dirsrv/dsgw-cgi-bin/search.orig" );
}
else
{
my $validity = /usr/lib64/dirsrv/dsgw-cgi-bin/dosearch;

if ( index( $validity, "Invalid credentials" ) != -1 )
{
print $validity;
print
;
system ( "/usr/lib64/dirsrv/dsgw-cgi-bin/unauth" );
print
;
print "<input type=button onClick=parent.location='<a href="https://directory.its.umd.umich.edu/'">https://directory.its.umd.umich.edu/' value='Go Home'>";
exit 0
};
system ( "/usr/lib64/dirsrv/dsgw-cgi-bin/search.orig" );
};

}}}

Here is a patch that fixed it:

[tstrothe@directory-dev 389-dsgw-tstrothe]$ diff -Naur /usr/local/src/389-dsgw-orig/doauth.c doauth.c
--- /usr/local/src/389-dsgw-orig/doauth.c 2013-08-20 16:08:15.000000000 -0400
+++ doauth.c 2016-06-14 15:18:37.458767411 -0400
@@ -65,13 +65,18 @@

 cred.bv_val = password;
 cred.bv_len = strlen(password);

• if( ldap_sasl_bind_s( ld, binddn, LDAP_SASL_SIMPLE, &cred, NULL, NULL, &msgid )
• != LDAP_SUCCESS ) {
• rc = dsgw_ldap_get_lderrno( ld, NULL, &lderrtxt );
• do_autherror( rc, NULL, lderrtxt, authdesturl == NULL );
• exit( 0 );
• }
  if( ldap_sasl_bind( ld, binddn, LDAP_SASL_SIMPLE, &cred, NULL, NULL, &msgid )
  != LDAP_SUCCESS ) {
  rc = dsgw_ldap_get_lderrno( ld, NULL, &lderrtxt );
  do_autherror( rc, NULL, lderrtxt, authdesturl == NULL );
  exit( 0 );
  } else {
  -
  char ckbuf;
  LDAPControl ctrls = NULL;
  LDAPMessage res;

Replying to [comment:5 tstrothe]:

Here is a patch that fixed it:
Thank you so much for providing a patch. Could it be possible to create a git patch file and attach it to this ticket? Thanks!

The modification was made to the source tarball: http://www.port389.org/binaries/389-dsgw-1.1.11.tar.bz2

And it was done by a co-worker (cche@umich.edu) so unfortunately I can't do a git patch

attachment
0001-auth-regression-fix-47795.patch

DSGW is deprecated, closing ticket

389-ds-base is moving from Pagure to Github. This means that new issues and pull requests
will be accepted only in 389-ds-base's github repository.

This issue has been cloned to Github and is available here:
- https://github.com/389ds/389-ds-base/issues/1126

If you want to receive further updates on the issue, please navigate to the github issue
and click on subscribe button.

Thank you for understanding. We apologize for all inconvenience.