touch-packages team mailing list archive

[David <1534230@xxxxxxxxxxxxxxxxxx>]

As an additional data point, I've run into the same issue for
certificates signed using RSA-SHA256.

When using "gnutls-cli -p 636 ldap --priority 'SECURE256'", I get an
error back stating that "The signature algorithm is not supported".  If
I change the priority string to 'SECURE256:+SIGN-ALL', I am able to
establish a connection.  Even stranger, the priority string 'SECURE256
:+SIGN-RSA-SHA256' gives me an error stating "The signature algorithm is
not supported".

It's almost as if the default signature algorithms changed behind the
scenes, breaking everything during an unattended-upgrade.  Additionally,
setting the signature algorithm directly doesn't work.

This is occurring for the following versions of gnutls-cli:
* 2.12.14-5ubuntu3.11
* 2.12.23-12ubuntu2.4

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to gnutls26 in Ubuntu.
https://bugs.launchpad.net/bugs/1534230

Title:
  LDAP TLS connection stopped working

Status in gnutls26 package in Ubuntu:
  Invalid

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)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/gnutls26/+bug/1534230/+subscriptions