{"id":118103,"date":"2024-07-22T21:43:01","date_gmt":"2024-07-22T19:43:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-sistemnoj-biblioteki-glibc-2-40"},"modified":"2024-07-22T21:43:01","modified_gmt":"2024-07-22T19:43:01","slug":"vypusk-sistemnoj-biblioteki-glibc-2-40","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/vypusk-sistemnoj-biblioteki-glibc-2-40","title":{"rendered":"Lansarea bibliotecii de sistem Glibc 2.40","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dup\u0103 \u0219ase luni de dezvoltare, a fost lansat\u0103 versiunea 2.40 a bibliotecii sistemului GNU C Library (glibc), care respect\u0103 pe deplin standardele ISO C11 \u0219i POSIX.1-2017. Noua versiune include corec\u021bii de la 68 de dezvoltatori.     <\/p>\n<p>Printre \u00eembun\u0103t\u0103\u021birile implementate \u00een Glibc 2.40, se num\u0103r\u0103:   <\/p>\n<ul>\n<li class=\"l\"> Fi\u0219ierul de antet math.h a fost actualizat cu noi func\u021bii exponen\u021biale \u0219i logaritmice definite \u00een standardul C23: exp2m1, exp10m1, log2p1, log10p1 \u0219i logp1. Func\u021biile sunt disponibile \u00een variante pentru tipurile float, double, long double, _FloatN \u0219i _FloatNx.\n<li class=\"l\"> A fost ad\u0103ugat macro-ul _ISOC23_SOURCE, care define\u0219te utilizarea func\u021bionalit\u0103\u021bilor propuse \u00een standardul C23 (\u00een prezent, \u00een Glibc sunt implementate doar o parte din aceste func\u021bionalit\u0103\u021bi). Utilizarea C23 poate fi, de asemenea, activat\u0103 la compilare prin specificarea op\u021biunilor -std=c23, -std=gnu23, -std=c2x sau -std=gnu2x \u00een GCC.\n<li class=\"l\"> A fost ad\u0103ugat\u0103 setarea &#171;glibc.rtld.enable_secure&#187;, care permite executarea programului \u00een timpul test\u0103rii ca \u0219i cum ar avea steagul de schimbare a identificatorului de utilizator (setuid).\n<li class=\"l\"> Pe platforma Linux, fi\u0219ierul de antet epoll.h a fost actualizat pentru a sus\u021bine noi ioctl \u0219i structuri epoll introduse \u00een nucleul Linux 6.9.\n<li class=\"l\"> Func\u021bionalitatea pentru identificarea posibilelor suprasarcini de buffer \u0219i a erorilor de securitate \u00een timpul execu\u021biei func\u021biilor de manipulare a \u0219irurilor \u0219i gestionare a memoriei (&#171;_FORTIFY_SOURCE&#187;) a fost adaptat\u0103 pentru compilarea Glibc cu ajutorul compilatorului Clang.\n<li class=\"l\"> \u00cen biblioteca pentru func\u021bii matematice vectoriale (libmvec) au fost propuse implement\u0103ri ale func\u021biilor acosh, asinh, atanh, cbrt, cosh, erf, erfc, hypot, pow, sinh \u0219i tanh pentru arhitectura Aarch64.\n<li class=\"l\"> Pe sistemele x86, pentru accelerarea scrierii unor seturi mari de date \u00een func\u021bia memset, a fost introdus\u0103 op\u021biunea de a dezactiva utilizarea buffer-elor temporare. Optimizarea se activeaz\u0103 prin setarea &#171;x86_memset_non_temporal_threshold&#187;.\n<li class=\"l\"> Macro-urile din fi\u0219ierul de antet stdbit.h, care func\u021bioneaz\u0103 cu diferite tipuri (type-generic), au fost adaptate la utilizarea func\u021biilor \u00eencorporate __builtin_stdc_bit_ceil pentru a sprijini operanzi de tipurile __int128 \u0219i _BitInt(N) cu GCC 14.\n<li class=\"l\"> C\u00e2mpurile cu contorul temporal \u00een structurile lastlog, utmp \u0219i utmpx au fost convertite dintr-un tip semnat de 32 de bi\u021bi \u00eentr-un tip nesemnat, ceea ce permite extinderea timpului maxim adresabil de c\u0103tre contor din 2038 p\u00e2n\u0103 \u00een 2106.\n<li class=\"l\"> S-au remediat vulnerabilit\u0103\u021bile:\n<ul>\n<li class=\"l\"> CVE-2024-2961  &#8212;  suprasarcin\u0103 de buffer la conversia \u0219irurilor special formulate \u00een codificarea ISO-2022-CN-EXT de c\u0103tre func\u021bia iconv(). \u00cen practic\u0103, vulnerabilitatea poate fi utilizat\u0103 pentru un atac la distan\u021b\u0103 asupra aplica\u021biilor PHP, duc\u00e2nd la execu\u021bia de cod.\n<li class=\"l\"> CVE-2024-33599 &#8212; suprasarcin\u0103 de buffer \u00een codul pentru gestionarea cache-ului netgroup \u00een procesul nscd (Name Service Cache Daemon). Vulnerabilitatea poate fi exploatat\u0103 prin trimiterea de c\u0103tre client a unei cereri special formulate.\n<li class=\"l\"> CVE-2024-33600 &#8212; dereferen\u021bierea unui pointer nul \u00een procesul nscd, ceea ce poate duce la crash \u00een timpul proces\u0103rii anumitor cereri.\n<li class=\"l\"> CVE-2024-33601 &#8212; o eroare \u00een lucrul cu cache-ul netgroup poate duce la crash-ul procesului nscd din cauza e\u0219ecului \u00een alocarea memoriei.\n<li class=\"l\"> CVE-2024-33602 &#8212; coruperea memoriei \u00een timpul lucrului cu cache-ul netgroup \u00een procesul nscd.      <\/ul>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61594\">opennet.ro<\/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) 2.40, \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 68 \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 2.40 \u0443\u043b\u0443\u0447\u0448\u0435\u043d\u0438\u0439 \u043c\u043e\u0436\u043d\u043e \u043e\u0442\u043c\u0435\u0442\u0438\u0442\u044c: \u0412 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u0447\u043d\u044b\u0439 \u0444\u0430\u0439\u043b math.h \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b \u043d\u043e\u0432\u044b\u0435 \u044d\u043a\u0441\u043f\u043e\u043d\u0435\u043d\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0435 \u0438 \u043b\u043e\u0433\u0430\u0440\u0438\u0444\u043c\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0435 \u0432 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u0435 C23: exp2m1, exp10m1.log2p1, [&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-118103","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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) 2.40, \u043a\u043e\u0442\u043e\u0440\u0430\u044f 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