openSUSE Recommended Update: Recommended update for sendmail ______________________________________________________________________________ Announcement ID: openSUSE-RU-2021:0293-1 Rating: moderate References: #1171164 #1174572 Affected Products: openSUSE Leap 15.2 ______________________________________________________________________________ An update that has two recommended fixes can now be installed. Description: This update for sendmail fixes the following issues: - Move SMTPD_LISTEN_REMOTE hack into valid code of update script - Change location of update script in fillup/sysconfig files - Add better support for IPv6 Update to sendmail 8.16.1 2020/07/05 (boo#1174572) - SECURITY: If sendmail tried to reuse an SMTP session which had already been closed by the server, then the connection cache could have invalid information about the session. One possible consequence was that STARTTLS was not used even if offered. This problem has been fixed by clearing out all relevant status information when a closed session is encountered. - Initial support for DANE (see RFC 7672 et.al.) is available if the compile time option DANE is set. Only TLSA RR 3-1-x is currently implemented. - New options SSLEngine and SSLEnginePath to support OpenSSL engines. Note: this feature has so far only been tested with the "chil" engine; please report problems with other engines if you encounter any. - New option CRLPath to specify a directory which contains hashes pointing to certificate revocations files. Based on patch from Al Smith. - New rulesets tls_srv_features and tls_clt_features which can return a (semicolon separated) list of TLS related options, e.g., CipherList, CertFile, KeyFile, see doc/op/op.me for details. - To automatically handle TLS interoperability problems for outgoing mail, sendmail can now immediately try a connection again without STARTTLS after a TLS handshake failure. This can be configured globally via the option TLSFallbacktoClear or per session via the 'C' flag of tls_clt_features. This also adds the new value "CLEAR" for the macro {verify}: STARTTLS has been disabled internally for a clear text delivery attempt. - Apply Timeout.starttls also to the server waiting for the TLS handshake to begin. Based on patch from Simon Hradecky. - New compile time option TLS_EC to enable the use of elliptic curve cryptography in STARTTLS (previously available as _FFR_TLS_EC). - Handle MIME boundaries specified in headers which contain CRLF. - Fix detection of loopback net (it was broken when compiled with NETINET6) and only set the macros {if_addr_out} and {if_family_out} if the interface of the outgoing connection does not belong to the loopback net. - Fix logic to enable a milter to delete a recipient in DeliveryMode=interactive even if it might be subject to alias expansion. - Log name of a milter making changes (this was missing for some functions). - Log the actual reply of a server when an SMTP delivery problem occurs in a "reply=" field if possible. - Log user= for failed AUTH attempts if possible. Based on patch from Packet Hack, Jim Hranicky, Kevin A. McGrail, and Joe Quinn. - Add CDB as map type. Note: CDB is a "Constant DataBase", i.e., no changes can be made after it is created, hence it does not work with vacation(1) nor editmap(8) (except for query mode). - Fix some memory leaks (mostly in error cases) and properly handle copied varargs in sm_io_vfprintf(). The issues were found using Coverity Scan and reported (including patches) by Ond��ej Lyson��k of Red Hat. - Do not override ServerSSLOptions and ClientSSLOptions when they are specified on the command line. Based on patch from Hiroki Sato. - Add RFC7505 Null MX support for domains that declare they do not accept mail. - New compile time option LDAP_NETWORK_TIMEOUT which is set automatically when LDAPMAP is used and LDAP_OPT_NETWORK_TIMEOUT is available to enable the new -c option for LDAP maps to specify the network timeout. - CONFIG: New FEATURE(`tls_session_features') to enable standard rules for tls_srv_features and tls_clt_features; for details see cf/README. - CONFIG: New options confSSL_ENGINE and confSSL_ENGINE_PATH for SSLEngine and SSLEnginePath, respectively. - CONFIG: New options confDANE to enable DANE support. - CONFIG: New option confTLS_FALLBACK_TO_CLEAR for TLSFallbacktoClear. - CONFIG: New extension CITag: for TLS restrictions, see cf/README for details. - CONFIG: FEATURE(`blacklist_recipients') renamed to FEATURE(`blocklist_recipients'). - CONTRIB: cidrexpand updated to support IPv6 CIDR ranges and to canonicalize IPv6 addresses; if cidrexpand is used with IPv6 addresses then UseCompressedIPv6Addresses must be disabled. - DOC: The dns map can return multiple values in a single result if the -z option is used. - DOC: Note to set MustQuoteChars=. due to DKIM signatures. - LIBMILTER: Fix typo in a macro. Patch from Ignacio Goyret of Alcatel-Lucent. - LIBMILTER: Fix reference in xxfi_negotiate documentation. Patch from Sven Neuhaus. - LIBMILTER: Fix function name in smfi_addrcpt_par documentation. Patch from G.W. Haywood. - LIBMILTER: Fix a potential memory leak in smfi_setsymlist(). Patch from Martin Svec. - MAKEMAP: New map type "implicit" refers to the first available type, i.e., it depends on the compile time options NEWDB, DBM, and CDB. This can be used in conjunction with the "implicit" map type in sendmail.cf. Note: makemap, libsmdb, and sendmail must be compiled with the same options (and library versions of course). - Portability: - Add support for Darwin 14-18 (Mac OS X 10.x). - New option HAS_GETHOSTBYNAME2: set if your system supports gethostbyname2(2). - Set SM_CONF_SEM=2 for FreeBSD 12 and later due to changes in sys/sem.h - On Linux set MAXHOSTNAMELEN (the maximum length of a FQHN) to 256 if it is less than that value. - Added Files: - cf/feature/blocklist_recipients.m4 - cf/feature/tls_failures.m4 - devtools/OS/Darwin.14.x - devtools/OS/Darwin.15.x - devtools/OS/Darwin.16.x - libsmdb/smcdb.c - sendmail/ratectrl.h - Use DANE and TLS_EC Patch Instructions: To install this openSUSE Recommended Update use the SUSE recommended installation methods like YaST online_update or "zypper patch". Alternatively you can run the command listed for your product: - openSUSE Leap 15.2: zypper in -t patch openSUSE-2021-293=1 Package List: - openSUSE Leap 15.2 (x86_64): libmilter1_0-8.16.1-lp152.10.3.1 libmilter1_0-debuginfo-8.16.1-lp152.10.3.1 rmail-8.16.1-lp152.10.3.1 rmail-debuginfo-8.16.1-lp152.10.3.1 sendmail-8.16.1-lp152.10.3.1 sendmail-debuginfo-8.16.1-lp152.10.3.1 sendmail-debugsource-8.16.1-lp152.10.3.1 sendmail-devel-8.16.1-lp152.10.3.1 - openSUSE Leap 15.2 (noarch): libmilter-doc-8.16.1-lp152.10.3.1 sendmail-starttls-8.16.1-lp152.10.3.1 References: https://bugzilla.suse.com/1171164 https://bugzilla.suse.com/1174572