Hope this helps: $ gnutls-cli -d 5 -p 636 xx.xx.xx.xx Resolving 'xx.xx.xx.xx'... Connecting to 'xx.xx.xx.xx:636'... |<4>| REC[0x18dd150]: Allocating epoch #0 |<2>| ASSERT: gnutls_constate.c:695 |<4>| REC[0x18dd150]: Allocating epoch #1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_RSA_AES_128_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_RSA_AES_128_CBC_SHA256 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_RSA_CAMELLIA_128_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_RSA_AES_256_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_RSA_AES_256_CBC_SHA256 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_RSA_CAMELLIA_256_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_RSA_3DES_EDE_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_DSS_AES_128_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_DSS_AES_128_CBC_SHA256 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_DSS_CAMELLIA_128_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_DSS_AES_256_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_DSS_AES_256_CBC_SHA256 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_DSS_CAMELLIA_256_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_DSS_3DES_EDE_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: DHE_DSS_ARCFOUR_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: RSA_AES_128_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: RSA_AES_128_CBC_SHA256 |<3>| HSK[0x18dd150]: Keeping ciphersuite: RSA_CAMELLIA_128_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: RSA_AES_256_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: RSA_AES_256_CBC_SHA256 |<3>| HSK[0x18dd150]: Keeping ciphersuite: RSA_CAMELLIA_256_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: RSA_3DES_EDE_CBC_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: RSA_ARCFOUR_SHA1 |<3>| HSK[0x18dd150]: Keeping ciphersuite: RSA_ARCFOUR_MD5 |<2>| EXT[0x18dd150]: Sending extension SERVER NAME (17 bytes) |<2>| EXT[0x18dd150]: Sending extension SAFE RENEGOTIATION (1 bytes) |<2>| EXT[0x18dd150]: Sending extension SESSION TICKET (0 bytes) |<2>| EXT[SIGA]: sent signature algo (4.2) DSA-SHA256 |<2>| EXT[SIGA]: sent signature algo (4.1) RSA-SHA256 |<2>| EXT[SIGA]: sent signature algo (2.1) RSA-SHA1 |<2>| EXT[SIGA]: sent signature algo (2.2) DSA-SHA1 |<2>| EXT[0x18dd150]: Sending extension SIGNATURE ALGORITHMS (10 bytes) |<3>| HSK[0x18dd150]: CLIENT HELLO was sent [137 bytes] |<4>| REC[0x18dd150]: Sending Packet[0] Handshake(22) with length: 137 |<4>| REC[0x18dd150]: Sent Packet[1] Handshake(22) with length: 142 |<4>| REC[0x18dd150]: Expected Packet[0] Handshake(22) with length: 1 |<4>| REC[0x18dd150]: Received Packet[0] Handshake(22) with length: 1828 |<4>| REC[0x18dd150]: Decrypted Packet[0] Handshake(22) with length: 1828 |<3>| HSK[0x18dd150]: SERVER HELLO was received [81 bytes] |<3>| HSK[0x18dd150]: Server's version: 3.3 |<3>| HSK[0x18dd150]: SessionID length: 32 |<3>| HSK[0x18dd150]: SessionID: 2b0122b46beded9d4f13d425eec48fa6e98846a1196077633b78ba8d40e62caa |<3>| HSK[0x18dd150]: Selected cipher suite: RSA_CAMELLIA_256_CBC_SHA1 |<2>| EXT[0x18dd150]: Parsing extension 'SAFE RENEGOTIATION/65281' (1 bytes) |<3>| HSK[0x18dd150]: Safe renegotiation succeeded |<3>| HSK[0x18dd150]: CERTIFICATE was received [1743 bytes] |<2>| ASSERT: auth_cert.c:1127 |<2>| ASSERT: gnutls_kx.c:705 |<2>| ASSERT: gnutls_handshake.c:2777 *** Fatal error: The signature algorithm is not supported. |<4>| REC: Sending Alert[2|40] - Handshake failed |<4>| REC[0x18dd150]: Sending Packet[1] Alert(21) with length: 2 |<4>| REC[0x18dd150]: Sent Packet[2] Alert(21) with length: 7 *** Handshake has failed GnuTLS error: The signature algorithm is not supported. |<4>| REC[0x18dd150]: Epoch #0 freed |<4>| REC[0x18dd150]: Epoch #1 freed
And more info: $ gnutls-cli-debug -p 636 xx.xx.xx.xx Resolving 'xx.xx.xx.xx'... Connecting to 'xx.xx.xx.xx:636'... Checking for SSL 3.0 support... yes Checking whether %COMPAT is required... no Checking for TLS 1.0 support... yes Checking for TLS 1.1 support... yes Checking fallback from TLS 1.1 to... N/A Checking for TLS 1.2 support... no Checking whether we need to disable TLS 1.0... N/A Checking for Safe renegotiation support... yes Checking for Safe renegotiation support (SCSV)... yes Checking for HTTPS server name... not checked Checking for version rollback bug in RSA PMS... no Checking for version rollback bug in Client Hello... no Checking whether the server ignores the RSA PMS version... no Checking whether the server can accept Hello Extensions... yes Checking whether the server can accept cipher suites not in SSL 3.0 spec... yes Checking whether the server can accept a bogus TLS record version in the client hello... yes Checking for certificate information... N/A Checking for trusted CAs... N/A Checking whether the server understands TLS closure alerts... partially Checking whether the server supports session resumption... yes Checking for export-grade ciphersuite support... no Checking RSA-export ciphersuite info... N/A Checking for anonymous authentication support... no Checking anonymous Diffie-Hellman group info... N/A Checking for ephemeral Diffie-Hellman support... no Checking ephemeral Diffie-Hellman group info... N/A Checking for AES cipher support (TLS extension)... yes Checking for CAMELLIA cipher support (TLS extension)... yes Checking for 3DES cipher support... yes Checking for ARCFOUR 128 cipher support... no Checking for ARCFOUR 40 cipher support... no Checking for MD5 MAC support... no Checking for SHA1 MAC support... yes Checking for max record size (TLS extension)... no Checking for OpenPGP authentication support (TLS extension)... no -- 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: Incomplete 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 -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
