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
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