openSUSE Security Update: Security update for exim ______________________________________________________________________________ Announcement ID: openSUSE-SU-2024:0007-1 Rating: important References: #1218387 Cross-References: CVE-2022-3559 CVE-2023-42114 CVE-2023-42115 CVE-2023-42116 CVE-2023-42117 CVE-2023-42119 CVE-2023-51766 CVSS scores: CVE-2022-3559 (NVD) : 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected Products: openSUSE Backports SLE-15-SP5 ______________________________________________________________________________ An update that fixes 7 vulnerabilities is now available. Description: This update for exim fixes the following issues: exim was updated to 4.97.1 (boo#1218387, CVE-2023-51766): * Fixes for the smtp protocol smuggling (CVE-2023-51766) exim was updated to exim 4.96: * Move from using the pcre library to pcre2. * Constification work in the filters module required a major version bump for the local-scan API. Specifically, the "headers_charset" global which is visible via the API is now const and may therefore not be modified by local-scan code. * Bug 2819: speed up command-line messages being read in. Previously a time check was being done for every character; replace that with one per buffer. * Bug 2815: Fix ALPN sent by server under OpenSSL. Previously the string sent was prefixed with a length byte. * Change the SMTP feature name for pipelining connect to be compliant with RFC 5321. Previously Dovecot (at least) would log errors during submission. * Fix macro-definition during "-be" expansion testing. The move to write-protected store for macros had not accounted for these runtime additions; fix by removing this protection for "-be" mode. * Convert all uses of select() to poll(). * Fix use of $sender_host_name in daemon process. When used in certain main-section options or in a connect ACL, the value from the first ever connection was never replaced for subsequent connections. * Bug 2838: Fix for i32lp64 hard-align platforms * Bug 2845: Fix handling of tls_require_ciphers for OpenSSL when a value with underbars is given. * Bug 1895: TLS: Deprecate RFC 5114 Diffie-Hellman parameters. * Debugging initiated by an ACL control now continues through into routing and transport processes. * The "expand" debug selector now gives more detail, specifically on the result of expansion operators and items. * Bug 2751: Fix include_directory in redirect routers. Previously a bad comparison between the option value and the name of the file to be included was done, and a mismatch was wrongly identified. * Support for Berkeley DB versions 1 and 2 is withdrawn. * When built with NDBM for hints DB's check for nonexistence of a name supplied as the db file-pair basename. * Remove the "allow_insecure_tainted_data" main config option and the "taint" log_selector. * Fix static address-list lookups to properly return the matched item. Previously only the domain part was returned. * The ${run} expansion item now expands its command string elements after splitting. Previously it was before; the new ordering makes handling zero-length arguments simpler. * Taint-check exec arguments for transport-initiated external processes. Previously, tainted values could be used. This affects "pipe", "lmtp" and "queryprogram" transport, transport-filter, and ETRN commands. The ${run} expansion is also affected: in "preexpand" mode no part of the command line may be tainted, in default mode the executable name may not be tainted. * Fix CHUNKING on a continued-transport. Previously the usabilility of the facility was not passed across execs, and only the first message passed over a connection could use BDAT; any further ones using DATA. * Support the PIPECONNECT facility in the smtp transport when the helo_data uses $sending_ip_address and an interface is specified. * OpenSSL: fix transport-required OCSP stapling verification under session resumption. * TLS resumption: the key for session lookup in the client now includes more info that a server could potentially use in configuring a TLS session, avoiding oferring mismatching sessions to such a server. * Fix string_copyn() for limit greater than actual string length. * Bug 2886: GnuTLS: Do not free the cached creds on transport connection close; it may be needed for a subsequent connection. * Fix CHUNKING for a second message on a connection when the first was rejected. * Fix ${srs_encode ...} to handle an empty sender address, now returning an empty address. * Bug 2855: Handle a v4mapped sender address given us by a frontending proxy. update to exim 4.95 * includes taintwarn (taintwarn.patch) * fast-ramp queue run * native SRS * TLS resumption * LMDB lookups with single key * smtp transport option "message_linelength_limit" * optionally ignore lookup caches * quota checking for appendfile transport during message reception * sqlite lookups allow a "file=<path>" option * lsearch lookups allow a "ret=full" option * command line option for the notifier socket * faster TLS startup * new main config option "proxy_protocol_timeout" * expand "smtp_accept_max_per_connection" * log selector "queue_size_exclusive" * main config option "smtp_backlog_monitor" * main config option "hosts_require_helo" * main config option "allow_insecure_tainted_data" Patch Instructions: To install this openSUSE Security 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 Backports SLE-15-SP5: zypper in -t patch openSUSE-2024-7=1 Package List: - openSUSE Backports SLE-15-SP5 (aarch64 ppc64le s390x x86_64): exim-4.97.1-bp155.5.9.1 eximon-4.97.1-bp155.5.9.1 eximstats-html-4.97.1-bp155.5.9.1 References: https://www.suse.com/security/cve/CVE-2022-3559.html https://www.suse.com/security/cve/CVE-2023-42114.html https://www.suse.com/security/cve/CVE-2023-42115.html https://www.suse.com/security/cve/CVE-2023-42116.html https://www.suse.com/security/cve/CVE-2023-42117.html https://www.suse.com/security/cve/CVE-2023-42119.html https://www.suse.com/security/cve/CVE-2023-51766.html https://bugzilla.suse.com/1218387