{"id":91038,"date":"2020-08-07T13:42:21","date_gmt":"2020-08-07T11:42:21","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-sistemnoj-biblioteki-glibc-2-32"},"modified":"2020-08-07T13:42:21","modified_gmt":"2020-08-07T11:42:21","slug":"vypusk-sistemnoj-biblioteki-glibc-2-32","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/vypusk-sistemnoj-biblioteki-glibc-2-32","title":{"rendered":"Wydanie biblioteki systemowej Glibc 2.32","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po sze\u015bciu miesi\u0105cach rozwoju <noindex><a rel=\"nofollow\" href=\"https:\/\/sourceware.org\/pipermail\/libc-announce\/2020\/000029.html\">opublikowano<\/a><\/noindex> wydanie biblioteki systemowej <noindex><a rel=\"nofollow\" href=\"http:\/\/ftp.gnu.org\/gnu\/glibc\/\">GNU C Library<\/a><\/noindex> (glibc) <noindex><a rel=\"nofollow\" href=\"http:\/\/sourceware.org\/glibc\/wiki\/Release\/2.32\">2.32<\/a><\/noindex>, kt\u00f3ra w pe\u0142ni spe\u0142nia wymagania standard\u00f3w ISO C11 i POSIX.1-2017. W sk\u0142ad nowego wydania wchodz\u0105 poprawki od 67 programist\u00f3w. <\/p>\n<p>Wprowadzone w Glibc 2.32 <noindex><a rel=\"nofollow\" href=\"http:\/\/sourceware.org\/git\/?p=glibc.git;a=blob_plain;f=NEWS;hb=HEAD\">ulepszenia<\/a><\/noindex> mo\u017cna wymieni\u0107:\n<\/p>\n<ul>\n<li class=\"l\"> Dodano wsparcie dla procesor\u00f3w Synopsys ARC HS (ARCv2 ISA). Do dzia\u0142ania portu wymagana jest co najmniej wersja binutils 2.32, gcc 8.3 oraz j\u0105dro Linux 5.1. Obs\u0142ugiwane s\u0105 trzy wersje ABI: arc-linux-gnu, arc-linux-gnuhf oraz arceb-linux-gnu (big-endian);\n<li class=\"l\"> Zrealizowano \u0142adowanie modu\u0142\u00f3w audytu, wskazanych w sekcjach DT_AUDIT oraz<br \/>\n  DT_DEPAUDIT pliku wykonywalnego.<\/p>\n<li class=\"l\"> Dla architektury powerpc64le wprowadzono obs\u0142ug\u0119 typu IEEE128 long double, kt\u00f3ra jest aktywna podczas kompilacji z opcj\u0105 &#171;-mabi=ieeelongdouble&#187;.\n<li class=\"l\"> Niekt\u00f3re API zosta\u0142y oznaczone przy u\u017cyciu atrybutu GCC &#8216;access&#8217;, co umo\u017cliwia generowanie lepszych ostrze\u017ce\u0144 podczas kompilacji w GCC 10 przy okre\u015blaniu mo\u017cliwych przepe\u0142nie\u0144 bufor\u00f3w i innych sytuacji wykraczaj\u0105cych poza dopuszczalne granice.\n<li class=\"l\"> Dla system\u00f3w Linux zaimplementowano funkcje pthread_attr_setsigmask_np oraz<br \/>\n  pthread_attr_getsigmask_np, daj\u0105ce aplikacji mo\u017cliwo\u015b\u0107 wskazania maski sygna\u0142u dla w\u0105tk\u00f3w tworzonych za pomoc\u0105 pthread_create.<\/p>\n<li class=\"l\"> Dane kodowania, informacje o typach symboli i tabele transliteracji zosta\u0142y zaktualizowane w celu wsparcia specyfikacji Unicode 13.0.0;\n<li class=\"l\"> Dodano nowy plik nag\u0142\u00f3wkowy , definiuj\u0105cy zmienn\u0105 __libc_single_threaded, kt\u00f3r\u0105 mo\u017cna stosowa\u0107 w aplikacjach do optymalizacji jednow\u0105tkowych.\n<li class=\"l\"> Dodano funkcje sigabbrev_np i sigdescr_np, kt\u00f3re zwracaj\u0105 skr\u00f3con\u0105 nazw\u0119 i opis sygnalizacji (na przyk\u0142ad &#171;HUP&#187; i Hangup&#187; dla SIGHUP).\n<li class=\"l\"> Dodano funkcje strerrorname_np i strerrordesc_np, kt\u00f3re zwracaj\u0105 nazw\u0119 i opis b\u0142\u0119du (na przyk\u0142ad &#171;EINVAL&#187; i &#171;Invalid argument&#187; dla EINVAL).\n<li class=\"l\"> Dla platformy ARM64 dodano flag\u0119 &#171;&#8212;enable-standard-branch-protection&#187; (lub -mbranch-protection=standard w GCC), kt\u00f3ra uruchamia mechanizm ARMv8.5-BTI (Branch Target Indicator) w celu ochrony wykonywania zestaw\u00f3w instrukcji, do kt\u00f3rych nie powinny prowadzi\u0107 skoki podczas rozga\u0142\u0119ziania. Zablokowanie przej\u015b\u0107 do dowolnych fragment\u00f3w kodu ma na celu przeciwdzia\u0142anie tworzeniu gadget\u00f3w w exploitach, kt\u00f3re stosuj\u0105 techniki programowania opartego na powrocie (ROP &#8212; Return-Oriented Programming, atakuj\u0105cy nie pr\u00f3buje umie\u015bci\u0107 w\u0142asnego kodu w pami\u0119ci, lecz operuje ju\u017c istniej\u0105cymi fragmentami instrukcji maszynowych ko\u0144cz\u0105cymi si\u0119 instrukcj\u0105 zwrotu kontrolnego, z kt\u00f3rych tworzy \u0142a\u0144cuch wywo\u0142a\u0144 w celu uzyskania po\u017c\u0105danej funkcjonalno\u015bci).\n<li class=\"l\"> Przeprowadzono du\u017c\u0105 czyszczenie przestarza\u0142ych funkcji, w tym usuni\u0119to opcje &#171;&#8212;enable-obsolete-rpc&#187; i &#171;&#8212;enable-obsolete-nsl&#187;, nag\u0142\u00f3wek &lt;sys\/sysctl.h&gt;. Oznaczono jako przestarza\u0142e funkcje sstk, siginterrupt, sigpause, sighold, sigrelse, sigignore i sigset, tablice sys_siglist, _sys_siglist i sys_sigabbrev, symbole sys_errlist, _sys_errlist, sys_nerr i _sys_nerr, modu\u0142 NSS hesiod.\n<li class=\"l\"> ldconfig domy\u015blnie zosta\u0142 prze\u0142\u0105czony na nowy format ld.so.cache, kt\u00f3ry jest wspierany w glibc od prawie 20 lat.\n<li class=\"l\"> Usuni\u0119to luki bezpiecze\u0144stwa:\n<ul>\n<li class=\"l\"> CVE-2016-10228 &#8212; zap\u0119tlenie w narz\u0119dziu iconv, pojawiaj\u0105ce si\u0119 przy uruchomieniu z opcj\u0105 &#171;-c&#187;, w przypadku przetwarzania niepoprawnych danych wielobajtowych.\n<li class=\"l\"> CVE-2020-10029 &#8212; uszkodzenie stosu podczas wywo\u0142ywania funkcji trygonometrycznych z pseudonullowym argumentem.\n<li class=\"l\"> CVE-2020-1752 &#8212; dost\u0119p do obszaru pami\u0119ci po jego zwolnieniu (use-after-free) w funkcji glob podczas rozpakowywania odniesienia do katalogu domowego (&#171;~user&#187;) w \u015bcie\u017ckach.\n<li class=\"l\"> CVE-2020-6096 &#8212; nieprawid\u0142owe przetwarzanie na platformie ARMv7 negatywnych warto\u015bci parametru w memcpy() i memmove(), okre\u015blaj\u0105cego rozmiar kopiowanego obszaru. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53003\">Umo\u017cliwia<\/a><\/noindex> organizacj\u0119 wykonania kodu w funkcjach memcpy() i memmove() przy przetwarzaniu zdefiniowanym sposobem danych. Warto zauwa\u017cy\u0107, \u017ce problem <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53371\">pozosta\u0142<\/a><\/noindex>  niepoprawiony przez prawie dwa miesi\u0105ce od publicznego ujawnienia informacji i pi\u0119\u0107 miesi\u0119cy od powiadomienia programist\u00f3w Glibc.\n<\/ul>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>\u0179r\u00f3d\u0142o: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53504\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 GNU C Library (glibc) 2.32, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u043d\u0438\u044f\u043c \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043e\u0432 ISO C11 \u0438 POSIX.1-2017. \u0412 \u0441\u043e\u0441\u0442\u0430\u0432 \u043d\u043e\u0432\u043e\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u044b \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043e\u0442 67 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432. \u0418\u0437 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u0432 Glibc 2.32 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c: \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 Synopsys ARC HS (ARCv2 ISA). \u0414\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e\u0440\u0442\u0430 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u043a\u0430\u043a \u043c\u0438\u043d\u0438\u043c\u0443\u043c binutils 2.32, [&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-91038","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 \u0448\u0435\u0441\u0442\u0438 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