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["ricleal@xxxxxxxxx" <ricleal@xxxxxxxxx>]

Public bug reported:

My LDAP authentication stopped working with the error: "The signature
algorithm is not supported"

This is GNUTLS Error code: -106 GNUTLS_E_UNSUPPORTED_SIGNATURE_ALGORITHM

LDAP search reproduces it:

$ ldapsearch -H ldaps://xxx.xxx.gov/ -b "OU=xxx" -x -d1
ldap_url_parse_ext(ldaps://xxx.xxx.gov/)
ldap_create
ldap_url_parse_ext(ldaps://xxx.xxx.gov:636/??base)
ldap_sasl_bind
ldap_send_initial_request
ldap_new_connection 1 1 0
ldap_int_open_connection
ldap_connect_to_host: TCP xxx.xxx.gov:636
ldap_new_socket: 3
ldap_prepare_socket: 3
ldap_connect_to_host: Trying 128.219.164.41:636
ldap_pvt_connect: fd: 3 tm: -1 async: 0
TLS: can't connect: The signature algorithm is not supported..
ldap_err2string
ldap_sasl_bind(SIMPLE): Can't contact LDAP server (-1)

It looks like the SHA1 support was removed from gnutls26...

Other packages:
ldap-utils:
Version: 2.4.31-1+nmu2ubuntu8.2

libsasl2-2:
Version: 2.1.25.dfsg1-17build1

libldap-2.4-2:
Version: 2.4.31-1+nmu2ubuntu8.2

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: libgnutls26 2.12.23-12ubuntu2.4
ProcVersionSignature: Ubuntu 3.13.0-75.119-generic 3.13.11-ckt32
Uname: Linux 3.13.0-75-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 2.14.1-0ubuntu3.19
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Jan 14 11:38:36 2016
InstallationDate: Installed on 2014-10-08 (462 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: gnutls26
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnutls26 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

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https://bugs.launchpad.net/bugs/1534230

Title:
  LDAP TLS connection stopped working

Status in gnutls26 package in Ubuntu:
  New

Bug description:
  My LDAP authentication stopped working with the error: "The signature
  algorithm is not supported"

  This is GNUTLS Error code: -106
  GNUTLS_E_UNSUPPORTED_SIGNATURE_ALGORITHM

  LDAP search reproduces it:

  $ ldapsearch -H ldaps://xxx.xxx.gov/ -b "OU=xxx" -x -d1
  ldap_url_parse_ext(ldaps://xxx.xxx.gov/)
  ldap_create
  ldap_url_parse_ext(ldaps://xxx.xxx.gov:636/??base)
  ldap_sasl_bind
  ldap_send_initial_request
  ldap_new_connection 1 1 0
  ldap_int_open_connection
  ldap_connect_to_host: TCP xxx.xxx.gov:636
  ldap_new_socket: 3
  ldap_prepare_socket: 3
  ldap_connect_to_host: Trying 128.219.164.41:636
  ldap_pvt_connect: fd: 3 tm: -1 async: 0
  TLS: can't connect: The signature algorithm is not supported..
  ldap_err2string
  ldap_sasl_bind(SIMPLE): Can't contact LDAP server (-1)

  It looks like the SHA1 support was removed from gnutls26...

  Other packages:
  ldap-utils:
  Version: 2.4.31-1+nmu2ubuntu8.2

  libsasl2-2:
  Version: 2.1.25.dfsg1-17build1

  libldap-2.4-2:
  Version: 2.4.31-1+nmu2ubuntu8.2

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: libgnutls26 2.12.23-12ubuntu2.4
  ProcVersionSignature: Ubuntu 3.13.0-75.119-generic 3.13.11-ckt32
  Uname: Linux 3.13.0-75-generic x86_64
  NonfreeKernelModules: fglrx
  ApportVersion: 2.14.1-0ubuntu3.19
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Jan 14 11:38:36 2016
  InstallationDate: Installed on 2014-10-08 (462 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  SourcePackage: gnutls26
  UpgradeStatus: No upgrade log present (probably fresh install)

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