{"id":107801,"date":"2023-04-11T00:48:22","date_gmt":"2023-04-10T22:48:22","guid":{"rendered":"https:\/\/prohoster.info\/?p=107801"},"modified":"2023-04-12T10:36:33","modified_gmt":"2023-04-12T08:36:33","slug":"vypusk-openbsd-7-3","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-openbsd-7-3","title":{"rendered":"Vyd\u00e1n\u00ed OpenBSD 7.3","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byla p\u0159edstavena verze svobodn\u00e9ho UNIX-podobn\u00e9ho opera\u010dn\u00edho syst\u00e9mu OpenBSD 7.3. Projekt OpenBSD byl zalo\u017een Theo de Raadtem v roce 1995 po konfliktu s v\u00fdvoj\u00e1\u0159i NetBSD, v d\u016fsledku kter\u00e9ho bylo Teovi uzav\u0159eno p\u0159\u00edstupov\u00e9 opr\u00e1vn\u011bn\u00ed k CVS repozit\u00e1\u0159i NetBSD. Pot\u00e9 Theo de Raadt se skupinou p\u0159\u00edznivc\u016f vytvo\u0159il na z\u00e1klad\u011b zdrojov\u00e9ho k\u00f3du NetBSD nov\u00fd otev\u0159en\u00fd opera\u010dn\u00ed syst\u00e9m, jeho\u017e hlavn\u00edmi c\u00edli se staly p\u0159enositelnost (podporov\u00e1no 13 hardwarov\u00fdch platforem), standardizace, spr\u00e1vn\u00e1 funk\u010dnost, proaktivn\u00ed bezpe\u010dnost a integrovan\u00e9 kryptografick\u00e9 n\u00e1stroje. Velikost pln\u00e9ho instala\u010dn\u00edho ISO obrazu z\u00e1kladn\u00edho syst\u00e9mu OpenBSD 7.3 \u010din\u00ed 620 MB.       <\/p>\n<p>Krom\u011b samotn\u00e9ho opera\u010dn\u00edho syst\u00e9mu je projekt OpenBSD zn\u00e1m sv\u00fdmi komponenty, kter\u00e9 se roz\u0161\u00ed\u0159ily v jin\u00fdch syst\u00e9mech a prok\u00e1zaly se jako jedno z nejbezpe\u010dn\u011bj\u0161\u00edch a nejkvalitn\u011bj\u0161\u00edch \u0159e\u0161en\u00ed. Mezi nimi: LibreSSL (fork OpenSSL), OpenSSH, paketov\u00fd filtr PF, d\u00e9mony sm\u011brov\u00e1n\u00ed OpenBGPD a OpenOSPFD, NTP server OpenNTPD, po\u0161tovn\u00ed <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/server\/\"   title=\"server\" data-wpil-keyword-link=\"linked\">server<\/a> OpenSMTPD, multiplexor textov\u00e9ho termin\u00e1lu (analog GNU screen) tmux, d\u00e9mon identd s implementac\u00ed protokolu IDENT, BSDL alternativa bal\u00ed\u010dku GNU groff \u2014 mandoc, protokol pro organizaci syst\u00e9m\u016f s vysokou dostupnost\u00ed CARP (Common Address Redundancy Protocol), lehk\u00fd http server, utilita pro synchronizaci soubor\u016f OpenRSYNC.          <\/p>\n<p>Hlavn\u00ed vylep\u0161en\u00ed:   <\/p>\n<ul>\n<li class=\"l\"> Byly implementov\u00e1ny syst\u00e9mov\u00e9 vol\u00e1n\u00ed waitid (\u010dek\u00e1n\u00ed na zm\u011bnu stavu procesu), pinsyscall (pro p\u0159enos informac\u00ed o vstupn\u00edm bod\u011b execve pro ochranu proti ROP exploit\u016fm), getthrname a setthrname (z\u00edsk\u00e1n\u00ed a nastaven\u00ed n\u00e1zvu vl\u00e1kna).\n<li class=\"l\"> Pro v\u0161echny architektury byl nasazen clockintr, hardwaru nez\u00e1visl\u00fd pl\u00e1nova\u010d p\u0159eru\u0161en\u00ed od \u010dasova\u010de.\n<li class=\"l\"> Byl p\u0159id\u00e1n sysctl kern.autoconf_serial, kter\u00fd lze pou\u017e\u00edt k sledov\u00e1n\u00ed zm\u011bn stavu za\u0159\u00edzen\u00ed tree v j\u00e1d\u0159e z u\u017eivatelsk\u00e9ho prostoru.\n<li class=\"l\"> Byla vylep\u0161ena podpora v\u00edcej\u00e1drov\u00fdch syst\u00e9m\u016f (SMP). Byly p\u0159evedeny do kategorie mp-safe filtry ud\u00e1lost\u00ed pro za\u0159\u00edzen\u00ed tun a tap. Byly odstran\u011bny z\u00e1mky z funkc\u00ed select, pselect, poll, ppoll, getsockopt, setsockopt, mmap, munmap, mprotect, sched_yield, minherit a utrace, stejn\u011b jako ioctl SIOCGIFCONF, SIOCGIFGMEMB, SIOCGIFGATTR a SIOCGIFGLIST. Byla zlep\u0161ena pr\u00e1ce se z\u00e1mky v paketov\u00e9m filtru pf. Zv\u00fd\u0161ila se v\u00fdkonnost syst\u00e9mu a s\u00ed\u0165ov\u00e9ho z\u00e1sobn\u00edku na v\u00edcej\u00e1drov\u00fdch syst\u00e9mech.\n<li class=\"l\">  Implementace frameworku drm (Direct Rendering Manager) je synchronizov\u00e1na s j\u00e1drem Linux 6.1.15 (v p\u0159edchoz\u00edm vyd\u00e1n\u00ed \u2014 5.15.69). Do ovlada\u010de amdgpu byla p\u0159id\u00e1na podpora GPU Ryzen 7000 \u201eRaphael\u201c, Ryzen 7020 \u201eMendocino\u201c, Ryzen 7045 \u201eDragon Range\u201c, Radeon RX 7900 XT\/XTX \u201eNavi 31\u201c, Radeon RX 7600M (XT), 7700S a 7600S \u201eNavi 33\u201c. Do amdgpu byla p\u0159id\u00e1na podpora pro \u0159\u00edzen\u00ed podsv\u00edcen\u00ed a byla zaji\u0161t\u011bna funk\u010dnost xbacklight p\u0159i pou\u017eit\u00ed ovlada\u010de X.Org modesetting. V Mesa je v\u00fdchoz\u00ed nastaven\u00ed pro ukl\u00e1d\u00e1n\u00ed do mezipam\u011bti shader\u016f.\n<li class=\"l\"> Byla provedena vylep\u0161en\u00ed v hypervisoru VMM.\n<li class=\"l\"> Byly zavedeny mo\u017enosti pro dal\u0161\u00ed ochranu pam\u011bti proces\u016f v u\u017eivatelsk\u00e9m prostoru: syst\u00e9mov\u00e9 vol\u00e1n\u00ed mimmutable a jemu odpov\u00eddaj\u00edc\u00ed funkce v knihovn\u011b, kter\u00e1 umo\u017e\u0148uje zafixovat p\u0159\u00edstupov\u00e1 pr\u00e1va p\u0159i mapov\u00e1n\u00ed do pam\u011bti (memory mappings). Po zafixov\u00e1n\u00ed nelze d\u00e1le m\u011bnit vystaven\u00e1 p\u0159\u00edstupov\u00e1 pr\u00e1va pro oblast pam\u011bti, nap\u0159\u00edklad z\u00e1kaz z\u00e1pisu a prov\u00e1d\u011bn\u00ed, prost\u0159ednictv\u00edm n\u00e1sleduj\u00edc\u00edch vol\u00e1n\u00ed funkc\u00ed mmap(), mprotect() a munmap(), kter\u00e9 p\u0159i pokusu o zm\u011bnu budou vracet chybu EPERM.\n<li class=\"l\"> Na architektu\u0159e AMD64 byl zaveden mechanismus ochrany RETGUARD pro syst\u00e9mov\u00e1 vol\u00e1n\u00ed, kter\u00fd m\u00e1 za c\u00edl zt\u00ed\u017eit realizaci exploit\u016f zalo\u017een\u00fdch na p\u0159evzet\u00ed kus\u016f k\u00f3du a technik\u00e1ch n\u00e1vratov\u011b orientovan\u00e9ho programov\u00e1n\u00ed.\n<li class=\"l\"> Byla aktivov\u00e1na ochrana proti exploitaci zranitelnost\u00ed, kter\u00e1 je zalo\u017eena na n\u00e1hodn\u00e9 reorganizaci spustiteln\u00e9ho souboru sshd p\u0159i ka\u017ed\u00e9m spu\u0161t\u011bn\u00ed syst\u00e9mu. Reorganizace \u010din\u00ed posuny funkc\u00ed v sshd m\u00e9n\u011b p\u0159edv\u00eddateln\u00fdmi, co\u017e komplikuje vytv\u00e1\u0159en\u00ed exploit\u016f vyu\u017e\u00edvaj\u00edc\u00edch metody n\u00e1vratov\u011b orientovan\u00e9ho programov\u00e1n\u00ed.\n<li class=\"l\"> Byla zaji\u0161t\u011bna agresivn\u011bj\u0161\u00ed randomizace um\u00edst\u011bn\u00ed z\u00e1sobn\u00edku na 64bitov\u00fdch syst\u00e9mech.\n<li class=\"l\"> Byla p\u0159id\u00e1na ochrana proti zranitelnosti Spectre-BHB v mikroarchitektonick\u00fdch struktur\u00e1ch procesor\u016f.\n<li class=\"l\"> Na procesorech ARM64 byl aktivov\u00e1n p\u0159\u00edznak DIT (Data Independent Timing) pro u\u017eivatelsk\u00fd prostor a j\u00e1dro, kter\u00fd br\u00e1n\u00ed \u00fatok\u016fm prost\u0159ednictv\u00edm vedlej\u0161\u00edch kan\u00e1l\u016f, manipuluj\u00edc\u00edm z\u00e1vislost\u00ed \u010dasu prov\u00e1d\u011bn\u00ed instrukc\u00ed na \u00fadaj\u00edch zpracov\u00e1van\u00fdch v t\u011bchto instrukc\u00edch.\n<li class=\"l\"> Byla poskytnuta mo\u017enost vyu\u017eit\u00ed lladdr p\u0159i ur\u010dov\u00e1n\u00ed s\u00ed\u0165ov\u00fdch konfigurac\u00ed. Nap\u0159\u00edklad krom\u011b vazby na n\u00e1zev rozhran\u00ed (hostname.fxp0) lze pou\u017e\u00edt vazbu na MAC adresu (hostname.00:00:6e:00:34:8f).\n<li class=\"l\"> Byla vylep\u0161ena podpora p\u0159echodu do re\u017eimu sp\u00e1nku pro syst\u00e9my na b\u00e1zi architektury ARM64.\n<li class=\"l\"> Byla v\u00fdznamn\u011b roz\u0161\u00ed\u0159ena podpora ARM \u010dip\u016f Apple.\n<li class=\"l\"> Byla p\u0159id\u00e1na podpora nov\u00e9ho hardwaru a zahrnuty nov\u00e9 ovlada\u010de.\n<li class=\"l\"> V ovlada\u010di bwfm pro bezdr\u00e1tov\u00e9 karty na b\u00e1zi \u010dip\u016f Broadcom a Cypress byla zavedena podpora \u0161ifrov\u00e1n\u00ed pro WEP.\n<li class=\"l\"> V instal\u00e1toru byla vylep\u0161ena pr\u00e1ce se softwarov\u00fdmi RAID a byla zavedena z\u00e1kladn\u00ed podpora pro \u0161ifrov\u00e1n\u00ed disk\u016f (Guided Disk Encryption).\n<li class=\"l\"> V tmux (\u201eterminal multiplexer\u201c) byly p\u0159id\u00e1ny nov\u00e9 p\u0159\u00edkazy scroll-top a scroll-bottom pro posun kurzoru na za\u010d\u00e1tek a konec. Byly aktualizov\u00e1ny bal\u00ed\u010dky LibreSSL a OpenSSH. Podrobn\u00fd p\u0159ehled vylep\u0161en\u00ed si m\u016f\u017eete prohl\u00e9dnout v recenz\u00edch LibreSSL 3.7.0, OpenSSH 9.2 a OpenSSH 9.3.\n<li class=\"l\"> Po\u010det port\u016f pro architekturu AMD64 dos\u00e1hl 11764 (bylo 11451), pro aarch64 \u2014 11561 (bylo 11261), pro i386 \u2014 10572 (bylo 10225). Mezi verzemi aplikac\u00ed v portech:\n<ul>\n<li>Asterisk 16.30.0, 18.17.0 a 20.2.0      <\/li>\n<li>Audacity 3.2.5      <\/li>\n<li>CMake 3.25.2      <\/li>\n<li>Chromium 111.0.5563.110      <\/li>\n<li>Emacs 28.2      <\/li>\n<li>FFmpeg 4.4.3      <\/li>\n<li>GCC 8.4.0 a 11.2.0      <\/li>\n<li>GHC 9.2.7      <\/li>\n<li>GNOME 43.3      <\/li>\n<li>Go 1.20.1      <\/li>\n<li>JDK 8u362, 11.0.18 a 17.0.6      <\/li>\n<li>KDE Gears 22.12.3      <\/li>\n<li>KDE Frameworks 5.103.0      <\/li>\n<li>Krita 5.1.5      <\/li>\n<li>LLVM\/Clang 13.0.0      <\/li>\n<li>LibreOffice 7.5.1.2      <\/li>\n<li>Lua 5.1.5, 5.2.4, 5.3.6 a 5.4.4      <\/li>\n<li>MariaDB 10.9.4      <\/li>\n<li>Mono 6.12.0.182      <\/li>\n<li>Mozilla Firefox 111.0 a ESR 102.9.0      <\/li>\n<li>Mozilla Thunderbird 102.9.0      <\/li>\n<li>Mutt 2.2.9 a NeoMutt 20220429      <\/li>\n<li>Node.js 18.15.0      <\/li>\n<li>OCaml 4.12.1      <\/li>\n<li>OpenLDAP 2.6.4      <\/li>\n<li>PHP 7.4.33, 8.0.28, 8.1.16 a 8.2.3      <\/li>\n<li>Postfix 3.5.17 a 3.7.3      <\/li>\n<li>PostgreSQL 15.2      <\/li>\n<li>Python 2.7.18, 3.9.16, 3.10.10 a 3.11.2      <\/li>\n<li>Qt 5.15.8 a 6.4.2      <\/li>\n<li>R 4.2.1      <\/li>\n<li>Ruby 3.0.5, 3.1.3 a 3.2.1      <\/li>\n<li>Rust 1.68.0      <\/li>\n<li>SQLite 2.8.17 a 3.41.0      <\/li>\n<li>Shotcut 22.12.21      <\/li>\n<li>Sudo 1.9.13.3      <\/li>\n<li>Suricata 6.0.10      <\/li>\n<li>Tcl\/Tk 8.5.19 a 8.6.13      <\/li>\n<li>TeX Live 2022      <\/li>\n<li>Vim 9.0.1388 a Neovim 0.8.3      <\/li>\n<li>Xfce 4.18  <\/ul>\n<li class=\"l\"> Aktualizov\u00e1ny komponenty od t\u0159et\u00edch stran obsa\u017een\u00e9 v OpenBSD 7.3:\n<ul>\n<li class=\"l\"> Grafick\u00fd stack Xenocara zalo\u017een\u00fd na X.Org 7.7 s xserver 1.21.6 + patche, freetype 2.12.1, fontconfig 2.14, Mesa 22.3.4, xterm 378, xkeyboard-config 2.20, fonttosfnt 1.2.2.  <\/li>\n<li class=\"l\">    LLVM\/Clang 13.0.0 (+ opravy)  <\/li>\n<li class=\"l\">    GCC 4.2.1 (+ patche) a 3.3.6 (+ patche)  <\/li>\n<li class=\"l\">    Perl 5.36.1 (+ opravy)  <\/li>\n<li class=\"l\">    NSD 4.6.1  <\/li>\n<li class=\"l\">    Unbound 1.17  <\/li>\n<li class=\"l\">    Ncurses 5.7  <\/li>\n<li class=\"l\">    Binutils 2.17 (+ patche)  <\/li>\n<li class=\"l\">  Gdb 6.3 (+ patche)  <\/li>\n<li class=\"l\">  Awk 12.9.2022  <\/li>\n<li class=\"l\">  Expat 2.5.0.  <\/li>\n<\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=58944\">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 7.3. \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-107801","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 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 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