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Bug#572524: marked as done (libnss-ldap: Broken Kerberos keytab support)

Your message dated Wed, 16 Nov 2022 01:20:11 +0000
with message-id <E1ov763-0016tp-7a@fasolo.debian.org>
and subject line Bug#1024140: Removed package(s) from unstable
has caused the Debian Bug report #572524,
regarding libnss-ldap: Broken Kerberos keytab support
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner@bugs.debian.org
immediately.)


-- 
572524: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=572524
Debian Bug Tracking System
Contact owner@bugs.debian.org with problems
--- Begin Message --- 
Package: libnss-ldap
Version: 261-2.1
Severity: normal
Tags: patch

I noticed that Kerberos keytab support was commented out in the debian/rules
file. When I enabled the feature by enabling the commented line, I found
that this doesn't really help.

Digging further into the code I found the source of the problem to be a
mismatch of the actual and the expected output of the krb5_kt_get_name()
function. The current code expects a file name, whereas the function returns
the name including the 'FILE:' prefix. I wrote a patch to fix the issue.

I use the following configuration in /etc/libnss-ldap.conf
use_sasl yes
krb5_usekeytab 1
krb5_autorenew 1
krb5_keytabname FILE:/etc/krb5.keytab
sasl_auth_id host/<fqdn>@<REALM>

--- nss_ldap-261.orig/ldap-init-krb5-cache.c	2008-07-03 04:32:10.000000000 +0200
+++ nss_ldap-261/ldap-init-krb5-cache.c	2010-03-04 18:04:22.000000000 +0100
@@ -236,9 +236,11 @@
 	      setregid (egid, rgid);
 	    }
 	  krb5_kt_get_name (context, __keytab, buf, KT_PATH_MAX);
+      /* Skip the 'FILE:' prefix*/
+      char *filename = buf + 5;
 	  debug ("==> krb5_cache_kt_is_accessible: kt_get_name gives %s",
-		 buf);
-	  code = access (buf, R_OK);
+		 filename);
+	  code = access (filename, R_OK);
 	  if (ruid != euid)
 	    {
 	      setreuid (ruid, euid);

-- System Information:
Debian Release: 5.0.4
  APT prefers stable
  APT policy: (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.26-2-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages libnss-ldap depends on:
ii  debconf [debcon 1.5.24                   Debian configuration management sy
ii  libc6           2.7-18lenny2             GNU C Library: Shared libraries
ii  libcomerr2      1.41.3-1                 common error description library
ii  libkrb53        1.6.dfsg.4~beta1-5lenny2 MIT Kerberos runtime libraries
ii  libldap-2.4-2   2.4.11-1+lenny1          OpenLDAP libraries
ii  libsasl2-2      2.1.22.dfsg1-23+lenny1   Cyrus SASL - authentication abstra

Versions of packages libnss-ldap recommends:
pn  libpam-ldap                 <none>       (no description available)
ii  nscd                        2.7-18lenny2 GNU C Library: Name Service Cache 

libnss-ldap suggests no packages.

-- debconf information excluded

--- End Message ---
--- Begin Message --- 
Version: 265-6+rm

Dear submitter,

as the package libnss-ldap has just been removed from the Debian archive
unstable we hereby close the associated bug reports.  We are sorry
that we couldn't deal with your issue properly.

For details on the removal, please see https://bugs.debian.org/1024140

The version of this package that was in Debian prior to this removal
can still be found using http://snapshot.debian.org/.

Please note that the changes have been done on the master archive and
will not propagate to any mirrors until the next dinstall run at the
earliest.

This message was generated automatically; if you believe that there is
a problem with it please contact the archive administrators by mailing
ftpmaster@ftp-master.debian.org.

Debian distribution maintenance software
pp.
Scott Kitterman (the ftpmaster behind the curtain)

--- End Message ---
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