{"id":110888,"date":"2023-10-17T03:10:16","date_gmt":"2023-10-17T01:10:16","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-openbsd-7-4"},"modified":"2023-10-17T03:10:16","modified_gmt":"2023-10-17T01:10:16","slug":"vypusk-openbsd-7-4","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/vypusk-openbsd-7-4","title":{"rendered":"Udgivelsen af OpenBSD 7.4","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Den nye version af det frie UNIX-lignende operativsystem OpenBSD 7.4 er blevet pr\u00e6senteret. OpenBSD-projektet blev grundlagt af Theo de Raadt i 1995 efter en konflikt med udviklerne af NetBSD, hvilket resulterede i, at Theo mistede adgangen til CVS-repositoriet for NetBSD. Efter dette skabte Theo de Raadt med en gruppe ligesindede et nyt \u00e5bent operativsystem baseret p\u00e5 kildetr\u00e6et fra NetBSD, hvor de vigtigste m\u00e5l for udviklingen blev b\u00e6rbarhed (underst\u00f8tter 13 hardwareplatforme), standardisering, korrekt funktion, proaktiv sikkerhed og integrerede kryptografiske midler. St\u00f8rrelsen p\u00e5 den komplette installations-ISO af den grundl\u00e6ggende OpenBSD 7.4-system er 630 MB.       <\/p>\n<p>Udover selve operativsystemet er OpenBSD-projektet kendt for sine komponenter, som har f\u00e5et udbredelse i andre systemer og har bevist sig som nogle af de mest sikre og kvalitetsbevidste l\u00f8sninger. Blandt dem er: LibreSSL (en fork af OpenSSL), OpenSSH, pakkefilteret PF, routing daemonerne OpenBGPD og OpenOSPFD, NTP-serveren OpenNTPD, mailserveren OpenSMTPD, multiplexeren til tekstterminalen (analog til GNU screen) tmux, identd daemon med implementation af IDENT-protokollen, BSDL-alternativet til GNU groff-pakken \u2014 mandoc, protokollen til opbygning af fejltolerante systemer CARP (Common Address Redundancy Protocol), en letv\u00e6gts http-server samt v\u00e6rkt\u00f8jet til synkronisering af filer OpenRSYNC.          <\/p>\n<p>Hovedforbedringer:   <\/p>\n<ul>\n<li class=\"l\"> Komponenter til opdatering af mikrokoden til AMD-processorer er blevet tilf\u00f8jet for arkitekturerne amd64 og i386. Nye versioner af mikrokoden installeres automatisk ved opstart. For distribution af bin\u00e6re filer med mikrokod er der lavet en port ved navn &#171;ports\/sysutils\/firmware\/amd&#187;. Installation af den nye mikrokode sker med det indbyggede v\u00e6rkt\u00f8j fw_update. Lignende support til opdatering af mikrokoden for Intel-processorer blev implementeret i 2018 og tilbudt i udgivelsen OpenBSD 6.3.\n<li class=\"l\"> Beskyttelsesmekanismerne IBT (Indirect Branch Tracking, amd64) og BTI (Branch Target Identification, arm64) er blevet inkluderet i kernen og brugerens rum, som er designet til at blokere for brud p\u00e5 den normale udf\u00f8relsesr\u00e6kkef\u00f8lge (control flow) som f\u00f8lge af udnyttelse, der \u00e6ndrer de i hukommelsen gemte funktionspegere (den implementerede beskyttelse forhindrer ondsindet kode i at springe midt ind i en funktion).\n<li class=\"l\"> P\u00e5 systemer med arm64-arkitektur er der blevet inkluderet pegerautentifikation (Pointer Authentication) for at beskytte brugerens rum. Teknologien g\u00f8r det muligt at bruge specialiserede ARM64-instruktioner til at kontrollere returadresser ved hj\u00e6lp af digitale signaturer, der gemmes i de ubenyttede \u00f8verste bits af selve pegeren.\n<li class=\"l\"> Indstillingerne for systemkompilatoren clang samt clang og gcc fra portene er blevet \u00e6ndret for at anvende de ovenn\u00e6vnte beskyttelsesmekanismer, hvilket har \u00f8get beskyttelsen af alle grundl\u00e6ggende applikationer og de fleste applikationer fra portene mod exploits, der bruger metoder til return-oriented programming (ROP - Return-Oriented Programming). Ved brug af ROP-teknikken fors\u00f8ger angriberen ikke at placere sin kode i hukommelsen, men arbejder med eksisterende stykker maskinkode i de indl\u00e6ste biblioteker, der slutter med en returkommando (normalt afslutningerne af biblioteksfunktioner). Exploitet best\u00e5r i at bygge en k\u00e6de af kald til s\u00e5danne blokke (&#171;gadgets&#187;) for at opn\u00e5 den \u00f8nskede funktionalitet.\n<li class=\"l\"> En ny systemopkald kqueue1 er tilf\u00f8jet, som adskiller sig fra kqueue ved at overf\u00f8re flag. I \u00f8jeblikket underst\u00f8tter kqueue1 kun flaget O_CLOEXEC (close-on-exec) for automatisk at lukke filbeskrivelser i b\u00f8rneprocessen efter kaldet til exec().\n<li class=\"l\"> For arkitekturerne amd64 og i386 er der implementeret support for pseudoudstyr dt til at organisere dynamisk sporing af systemet og applikationer. Der er tilf\u00f8jet et systemopkald utrace til at inds\u00e6tte brugerdefinerede logposter i ktrace.\n<li class=\"l\"> Fejlrettelser, der fjerner usikkert adf\u00e6rd ved brug af MS-DOS-filsystemer, er overf\u00f8rt fra FreeBSD.\n<li class=\"l\"> Muligheden for at montere softdep, der anvendes til udsat gruppering af metadataopdateringer, er deaktiveret.\n<li class=\"l\"> Programmer, der er beskyttet ved hj\u00e6lp af systemopkaldet unveil, f\u00e5r tilladelse til at gemme core dumps i den nuv\u00e6rende arbejdsmappe.\n<li class=\"l\"> For ARM64-arkitekturen er muligheden for at g\u00e5 ind i dybe inaktive tilstande (idle), tilg\u00e6ngelige i Apple M1\/M2-chips, aktiveret for at spare energi og implementere hviletilstand.\n<li class=\"l\"> En omg\u00e5else af beskyttelse mod Zenbleed-s\u00e5rbarheden i AMD-processorer er blevet tilf\u00f8jet.\n<li class=\"l\"> St\u00f8tten til multiprocessorsystemer (SMP) er forbedret. Funktionen arprequest(), koden til h\u00e5ndtering af indkommende ARP-pakker og implementeringen af naboidentifiering i IPv6-stakken er blevet befriet for l\u00e5sninger.\n<li class=\"l\"> Gr\u00e6nsefladen til synkronisering af pfsync-pakkefiltertabellerne er blevet omskrevet for at forbedre arbejdet med l\u00e5sninger og kompatibilitet med fremtidigt arbejde med parallelisering af netv\u00e6rksstakken.\n<li class=\"l\"> Implementeringen af drm (Direct Rendering Manager) er synkroniseret med Linux-kernen 6.1.55 (den tidligere udgivelse var 6.1.15). Ydelsen er forbedret p\u00e5 systemer med Intel-processorer baseret p\u00e5 mikroarkitekturerne Alder Lake og Raptor Lake.\n<li class=\"l\"> Der er foretaget forbedringer i hypervisoren VMM. I vmd er der implementeret underst\u00f8ttelse af en multiprocessormodel for block- og netv\u00e6rks virtio-enheder. Der er tilf\u00f8jet underst\u00f8ttelse af vektoreindgang\/udgang i zero-copy mode til block virtio-enheden. Adgangen for g\u00e6stesystemer til AMD-processorer iht. p-state er begr\u00e6nset. Ejere <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/vps\/\"   title=\"virtual machines\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2146\">virtual machines<\/a> har tilladelse til at overskrive det indl\u00e6ste kerne via vmctl.\n<li class=\"l\"> En ny header-fil uchar.h er tilf\u00f8jet med typerne char32_t og char16_t, samt funktionerne c32rtomb(), mbrtoc32(), c16rtomb() og mbrtoc16(), som er defineret i C11-standarden.\n<li class=\"l\"> Funktionen malloc har f\u00e5et tilf\u00f8jet en &#171;D&#187; mulighed for at bestemme hukommelsesl\u00e6kager ved hj\u00e6lp af ktrace (&#171;MALLOC_OPTIONS=D ktrace -tu program&#187;) og kdump (&#171;kdump -u malloc &#8230;&#187;).\n<li class=\"l\"> Der er tilf\u00f8jet underst\u00f8ttelse af variablen ${.VARIABLES} i make-kommandoen for at udskrive navnene p\u00e5 alle definerede globale variabler.\n<li class=\"l\"> Der er tilf\u00f8jet en &#171;-u&#187; mulighed til kdump-v\u00e6rkt\u00f8jet for at v\u00e6lge utrace-tracingpunkter efter en given etiket.\n<li class=\"l\"> Der er tilf\u00f8jet &#171;&#8212;size-only&#187; og &#171;&#8212;ignore-times&#187; muligheder til openrsync-v\u00e6rkt\u00f8jet.\n<li class=\"l\"> I cron og crontab er der tilf\u00f8jet support til tilf\u00e6ldige skift ved angivelse af v\u00e6rdier inden for bestemte intervaller med et givet trin, hvilket g\u00f8r det muligt at undg\u00e5 samtidig anmodning om ressourcen fra forskellige maskiner, der har de samme regler i cron. For eksempel vil angivelsen &#171;0~59\/30&#187; eller &#171;~\/30&#187; i feltet for minutter f\u00f8re til, at kommandoen k\u00f8res to gange i timen igennem sekventielt tilf\u00e6ldigt udvalgte intervaller.\n<li class=\"l\"> Der er tilf\u00f8jet muligheden for knap-mapping til to- eller tre-finger-tryk p\u00e5 touchpad'en i wsconsctl-kommandoen.\n<li class=\"l\"> Underst\u00f8ttelse af nyt hardware er blevet tilf\u00f8jet, og nye drivere er inkluderet.\n<li class=\"l\"> Installation p\u00e5 systemer med armv7 og arm64-processorer er blevet forbedret.\n<li class=\"l\"> Underst\u00f8ttelsen af at indl\u00e6se filer fra EFI-systempartitionen (EFI System Partition) er blevet tilf\u00f8jet.\n<li class=\"l\"> Installatoren har f\u00e5et forbedret underst\u00f8ttelse af software RAID (softraid). Der er blevet tilf\u00f8jet mulighed for at placere rodpartitionen i softraid p\u00e5 riscv64- og arm64-systemer. Softraid er tilf\u00f8jet til ramdisk for powerpc64-arkitekturen. For arm64 er der implementeret underst\u00f8ttelse af disk-kryptering (Guided Disk Encryption).\n<li class=\"l\"> I malloc-funktionen er der tilf\u00f8jet kontrol af alle blokke i listen over udskudt frigivelse af hukommelse for at identificere situationer med skrivning til frigivet hukommelsesomr\u00e5de.\n<li class=\"l\"> For the shutdown command, you now need to add the user to the group \u00ab_shutdown\u00bb, which allows separating the powers related to system shutdown and direct reading from disk devices.\n<li class=\"l\"> Using the unveil system call, the patch utility is restricted to access only the current directory, the temporary files directory, and the files listed in the command line.\n<li class=\"l\"> Added sysctl net.inet6.icmp6.nd6_queued to show the number of packets waiting for ND6 responses (similar to ARP).\n<li class=\"l\"> When configuring an IPv6 address on a network interface, announcements are sent to neighboring routers via multicast address.\n<li class=\"l\"> Initial support added for TSO (TCP Segmentation Offload) and LRO (TCP Large Receive Offload) for processing segments and merging packets on the network card side.\n<li class=\"l\"> The loading from the pf packet filter rules kernel has been accelerated by the pfctl utility. Processing of the actions \u00abkeep state\u00bb and \u00abnat-to\u00bb for ICMP error return messages has been included.\n<li class=\"l\"> Checksum calculations for IP, TCP, and UDP have been disabled for loopback interfaces.\n<li class=\"l\"> Tilf\u00f8jet tidlig underst\u00f8ttelse af <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/vpn\/\"   title=\"VPN\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"243\">VPN<\/a> IPsec that depends on routing (route-based).\n<li class=\"l\"> Support for Flowspec has been added to bgpd (RFC5575, currently only supports the announcement of flowspec rules). The implementation of ASPA (Autonomous System Provider Authorization) has been aligned with the specifications of draft-ietf-sidrops-aspa-verification-16 and draft-ietf-sidrops-aspa-profile-16, and switched to using AFI-independent lookup tables.\n<li class=\"l\"> Performance of rpki-client has been improved by 30-50%. Added support for gzip and deflate compression.\n<li class=\"l\"> Updated packages for LibreSSL and OpenSSH. A detailed overview of improvements can be found in the reviews for LibreSSL 3.8.0, OpenSSH 9.4, and OpenSSH 9.5.\n<li class=\"l\"> The number of ports for the AMD64 architecture reached 11845 (previously 11764), for aarch64 \u2014 11508 (previously 11561), for i386 \u2014 10603 (previously 10572). Among the application versions in the ports:\n<ul>\n<li>Asterisk 16.30.1, 18.19.0, 20.4.0      <\/li>\n<li>Audacity 3.3.3      <\/li>\n<li>CMake 3.27.5      <\/li>\n<li>Chromium 117.0.5938.149      <\/li>\n<li>Emacs 29.1      <\/li>\n<li>Firefox 123.0.1, ESR 115.8.0      <\/li>\n<li>GCC 8.4.0 og 11.2.0      <\/li>\n<li>GHC 9.2.7      <\/li>\n<li>GNOME 44      <\/li>\n<li>Go 1.21.1      <\/li>\n<li>JDK 8u382, 11.0.20, and 17.0.8      <\/li>\n<li>KDE Applications 23.08.0      <\/li>\n<li>KDE Frameworks 5.110.0      <\/li>\n<li>Krita 5.1.5      <\/li>\n<li>LLVM\/Clang 13.0.0 and 16.0.6      <\/li>\n<li>LibreOffice 7.6.2.1      <\/li>\n<li>Lua 5.1.5, 5.2.4, 5.3.6, and 5.4.6      <\/li>\n<li>MariaDB 10.9.6      <\/li>\n<li>Mono 6.12.0.199      <\/li>\n<li>Mozilla Firefox 118.0.1 and ESR 115.3.1      <\/li>\n<li>Mozilla Thunderbird 115.3.1      <\/li>\n<li>Mutt 2.2.12 and NeoMutt 20230517      <\/li>\n<li>Node.js 18.18.0      <\/li>\n<li>OpenLDAP 2.6.6      <\/li>\n<li>PHP 7.4.33, 8.0.30, 8.1.24, and 8.2.11      <\/li>\n<li>Postfix 3.7.3      <\/li>\n<li>PostgreSQL 15.4      <\/li>\n<li>Python 2.7.18, 3.9.18, 3.10.13, and 3.11.5      <\/li>\n<li>Qt 5.15.10 and 6.5.2      <\/li>\n<li>Ruby 3.1.4, 3.2.3, 3.3.0      <\/li>\n<li>Ruby 3.0.6, 3.1.4, and 3.2.2      <\/li>\n<li>Rust 1.72.1      <\/li>\n<li>SQLite 3.42.0      <\/li>\n<li>Suricata 7.0.3      <\/li>\n<li>Sudo 1.9.14.2      <\/li>\n<li>Suricata 6.0.12      <\/li>\n<li>Tcl\/Tk 8.5.19 og 8.6.13      <\/li>\n<li>TeX Live 2022      <\/li>\n<li>Vim 9.0.1897 and Neovim 0.9.1      <\/li>\n<li>Xfce 4.18    <\/li>\n<\/ul>\n<li class=\"l\"> Komponenter fra tredjepartsudviklere, der indg\u00e5r i OpenBSD 7.3, er opdateret:\n<ul>\n<li class=\"l\"> Xenocara graphical stack based on X.Org 7.7 with xserver 21.1.8 + patches, freetype 2.13.0, fontconfig 2.14.2, Mesa 22.3.7, xterm 378, xkeyboard-config 2.20, fonttosfnt 1.2.2.  <\/li>\n<li class=\"l\">    LLVM\/Clang 13.0.0 (+ patches)  <\/li>\n<li class=\"l\">    GCC 4.2.1 (+ patches) og 3.3.6 (+ patches)  <\/li>\n<li class=\"l\">    Perl 5.36.1 (+ patches)  <\/li>\n<li class=\"l\">    NSD 4.7.0  <\/li>\n<li class=\"l\">    Unbound 1.18  <\/li>\n<li class=\"l\">    Ncurses 5.7  <\/li>\n<li class=\"l\">    Binutils 2.17 (+ patches)  <\/li>\n<li class=\"l\">  Gdb 6.3 (+ patch)  <\/li>\n<li class=\"l\">  Awk 12.9.2023  <\/li>\n<li class=\"l\">  Expat 2.5.0.  <\/li>\n<\/ul>\n<\/ul>\n<p>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=59942\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 UNIX-\u043f\u043e\u0434\u043e\u0431\u043d\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b OpenBSD 7.4. \u041f\u0440\u043e\u0435\u043a\u0442 OpenBSD \u0431\u044b\u043b \u043e\u0441\u043d\u043e\u0432\u0430\u043d \u0422\u044d\u043e \u0434\u0435 \u0420\u0430\u0430\u0434\u0442\u043e\u043c (Theo de Raadt) \u0432 1995 \u0433\u043e\u0434\u0443 \u043f\u043e\u0441\u043b\u0435 \u043a\u043e\u043d\u0444\u043b\u0438\u043a\u0442\u0430 \u0441 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c\u0438 NetBSD, \u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0434\u043b\u044f \u0422\u044d\u043e \u0431\u044b\u043b \u0437\u0430\u043a\u0440\u044b\u0442 \u0434\u043e\u0441\u0442\u0443\u043f \u043a CVS \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044e NetBSD. \u041f\u043e\u0441\u043b\u0435 \u044d\u0442\u043e\u0433\u043e \u0422\u044d\u043e \u0434\u0435 \u0420\u0430\u0430\u0434\u0442 \u0441 \u0433\u0440\u0443\u043f\u043f\u043e\u0439 \u0435\u0434\u0438\u043d\u043e\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u043e\u0432 \u0441\u043e\u0437\u0434\u0430\u043b \u043d\u0430 \u0431\u0430\u0437\u0435 \u0434\u0435\u0440\u0435\u0432\u0430 \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0445 \u0442\u0435\u043a\u0441\u0442\u043e\u0432 NetBSD \u043d\u043e\u0432\u0443\u044e \u043e\u0442\u043a\u0440\u044b\u0442\u0443\u044e [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-110888","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0432\u044b\u043f\u0443\u0441\u043a 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