{"id":181665,"date":"2026-05-22T18:24:54","date_gmt":"2026-05-22T16:24:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vo-freebsd-ustraneno-4-uyazvimosti-pozvolyayushhie-podnyat-privilegii-i-odna-udalyonnaya-root-uyazvimost"},"modified":"2026-05-22T18:24:54","modified_gmt":"2026-05-22T16:24:54","slug":"vo-freebsd-ustraneno-4-uyazvimosti-pozvolyayushhie-podnyat-privilegii-i-odna-udalyonnaya-root-uyazvimost","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/vo-freebsd-ustraneno-4-uyazvimosti-pozvolyayushhie-podnyat-privilegii-i-odna-udalyonnaya-root-uyazvimost","title":{"rendered":"Vo FreeBSD bolo odstr\u00e1nen\u00fdch 4 zranite\u013enost\u00ed, ktor\u00e9 umo\u017e\u0148ovali zv\u00fd\u0161i\u0165 opr\u00e1vnenia, a jedna vzdialen\u00e1 root zranite\u013enos\u0165.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Vo FreeBSD bolo odstr\u00e1nen\u00fdch 7 zranite\u013enost\u00ed, z ktor\u00fdch jedna umo\u017e\u0148uje vzdialen\u00e9 vykonanie k\u00f3du s pr\u00e1vami root, a \u0161tyri zvy\u0161uj\u00fa vlastn\u00e9 privil\u00e9gia v syst\u00e9me. Zranite\u013enosti boli vyrie\u0161en\u00e9 v aktualiz\u00e1ci\u00e1ch FreeBSD 15.0-RELEASE-p9, 14.4-RELEASE-p5 a 14.3-RELEASE-p14. <\/p>\n<ul>\n<li class=\"l\"> CVE-2026-45255 \u2014 v in\u0161tal\u00e1tore bsdinstall a konfigur\u00e1tore bsdconfig ch\u00fdbalo \u00fanik \u0161peci\u00e1lnych znakov v shell skripte, ktor\u00fd zobrazuje pou\u017e\u00edvate\u013eovi zoznam dostupn\u00fdch bezdr\u00f4tov\u00fdch siet\u00ed, definovan\u00fdch v\u00fdsledkom skenovania. \u00dato\u010dn\u00edk m\u00f4\u017ee vytvori\u0165 falo\u0161n\u00fd pr\u00edstupov\u00fd bod a priradi\u0165 \u0161peci\u00e1lne form\u00e1tovan\u00fd identifik\u00e1tor siete (SSID), ktor\u00fd obsahuje vykonate\u013en\u00e9 shell pr\u00edkazy (napr\u00edklad \u201etest`id`\u201c). Pri vyvolan\u00ed funkcie vyh\u013ead\u00e1vania bezdr\u00f4tov\u00fdch siet\u00ed pou\u017e\u00edvate\u013eom bud\u00fa \u00fato\u010dn\u00edkom vlo\u017een\u00e9 shell pr\u00edkazy vykonan\u00e9 na syst\u00e9me pou\u017e\u00edvate\u013ea s pr\u00e1vami root (v\u00fdber alebo pripojenie k sieti \u00fato\u010dn\u00edka nie je potrebn\u00e9, sta\u010d\u00ed len iniciova\u0165 skenovanie siet\u00ed).\n<li class=\"l\"> CVE-2026-45250 \u2014 prete\u010denie z\u00e1sobn\u00edka v syst\u00e9movom volan\u00ed setcred, ktor\u00e9 umo\u017e\u0148uje lok\u00e1lnemu nepovolen\u00e9mu pou\u017e\u00edvate\u013eovi dosiahnu\u0165 vykonanie svojho k\u00f3du na \u00farovni jadra. Probl\u00e9m je sp\u00f4soben\u00fd nespr\u00e1vnou kontrolou ve\u013ekosti d\u00e1t umiestnen\u00fdch v buferi \u2014 namiesto \u201esizeof(gid_t)\u201c bola uveden\u00e1 \u201esizeof(*groups)\u201c. Na pr\u00edstup k syst\u00e9mov\u00e9mu volaniu setcred s\u00fa potrebn\u00e9 zv\u00fd\u0161en\u00e9 pr\u00e1va, no zranite\u013enos\u0165 existuje v k\u00f3de po\u010diato\u010dn\u00e9ho kop\u00edrovania do samostatn\u00e9ho bufera zoznamu skup\u00edn odoslan\u00e9ho pou\u017e\u00edvate\u013eom, ktor\u00fd sa vykon\u00e1va pred kontrolou pr\u00e1v.\n<li class=\"l\"> CVE-2026-45251 \u2014 pr\u00edstup k u\u017e uvo\u013enenej pam\u00e4ti (use-after-free) v syst\u00e9mov\u00fdch volaniach select a poll, ktor\u00fd vznik\u00e1 v pr\u00edpade zatvorenia odoslan\u00e9ho s\u00faborov\u00e9ho popisova\u010da pred odblokovan\u00edm vl\u00e1kna, \u010dakaj\u00faceho na s\u00faborov\u00e9 popisova\u010de od syst\u00e9mov\u00fdch volan\u00ed select a poll. \u00daspe\u0161n\u00e1 exploit\u00e1cia umo\u017e\u0148uje nepovolen\u00e9mu pou\u017e\u00edvate\u013eovi vykona\u0165 k\u00f3d na \u00farovni jadra.\n<li class=\"l\"> CVE-2026-45253 \u2014 nedostato\u010dn\u00e1 kontrola parametrov predan\u00fdch do syst\u00e9mov\u00e9ho volania ptrace pri vykon\u00e1van\u00ed oper\u00e1cie PT_SC_REMOTE. Zranite\u013enos\u0165 umo\u017e\u0148uje nepovolen\u00e9mu pou\u017e\u00edvate\u013eovi zorganizova\u0165 vykon\u00e1vanie \u013eubovo\u013en\u00e9ho k\u00f3du v jadre, aj ke\u010f cie\u013eov\u00fd laden\u00fd proces nem\u00e1 \u0161peci\u00e1lne pr\u00e1va.\n<li class=\"l\"> CVE-2026-39461 \u2014 prete\u010denie z\u00e1sobn\u00edka v kni\u017enici libcasper, ktor\u00e1 poskytuje aplik\u00e1ci\u00e1m izolovan\u00fdm pomocou mechanizmu Capsicum pr\u00edstup k syst\u00e9mov\u00fdm rozhran\u00edm. Pri interakcii s obslu\u017en\u00fdm programom cez UNIX-socket kni\u017enica pou\u017e\u00edva syst\u00e9mov\u00fd volanie select na \u010dakanie na pr\u00edchod \u00fadajov, ale nekontroluje s\u00falad deskriptoru socketu s aktu\u00e1lnym limitom v select FD_SETSIZE (1024). \u00dato\u010dn\u00edk m\u00f4\u017ee iniciova\u0165 alok\u00e1ciu ve\u013ek\u00fdch s\u00faborov\u00fdch deskriptorov v aplik\u00e1cii zalo\u017eenej na libcasper a sp\u00f4sobi\u0165 prete\u010denie z\u00e1sobn\u00edka. Pri tak\u00fdchto manipul\u00e1ci\u00e1ch s programami setuid root je mo\u017en\u00e9 dosiahnu\u0165 vykon\u00e1vanie k\u00f3du s pr\u00e1vami root.\n<li class=\"l\"> CVE-2026-45254 \u2014 mo\u017enos\u0165 ob\u00eddenia limitov cap_net v aplik\u00e1cii kv\u00f4li tomu, \u017ee ch\u00fdbaj\u00faci k\u013e\u00fa\u010d je vn\u00edman\u00fd ako \u201epovoli\u0165 v\u0161etko\u201c namiesto blokovania.\n<li class=\"l\"> CVE-2026-45252 \u2014 prete\u010denie vyrovn\u00e1vacej pam\u00e4te v module fusefs pri spracovan\u00ed spr\u00e1v FUSE_LISTXATTR, \u010do umo\u017e\u0148uje pre\u010d\u00edta\u0165 a\u017e 253 bajtov z oblasti pam\u00e4te jadra mimo vyrovn\u00e1vacej pam\u00e4te alebo zap\u00edsa\u0165 a\u017e 250 bajtov do nevyu\u017e\u00edvanej oblasti hromady.\n<\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65497\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 7 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043e\u0434\u043d\u0430 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root, \u0430 \u0447\u0435\u0442\u044b\u0440\u0435 \u043f\u043e\u0432\u044b\u0441\u0438\u0442\u044c \u0441\u0432\u043e\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0432 \u0441\u0438\u0441\u0442\u0435\u043c\u0435. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0432 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f\u0445 FreeBSD 15.0-RELEASE-p9, 14.4-RELEASE-p5 \u0438 14.3-RELEASE-p14. CVE-2026-45255 &#8212; \u0432 \u0438\u043d\u0441\u0442\u0430\u043b\u043b\u044f\u0442\u043e\u0440\u0435 bsdinstall \u0438 \u043a\u043e\u043d\u0444\u0438\u0433\u0443\u0440\u0430\u0442\u043e\u0440\u0435 bsdconfig \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u043e\u0432\u0430\u043b\u043e \u044d\u043a\u0440\u0430\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0441\u043f\u0435\u0446\u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432 \u0432 shell-\u0441\u043a\u0440\u0438\u043f\u0442\u0435, \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u044e\u0449\u0435\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u0441\u043f\u0438\u0441\u043e\u043a \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b\u0445 \u0434\u043b\u044f \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u0431\u0435\u0441\u043f\u0440\u043e\u0432\u043e\u0434\u043d\u044b\u0445 \u0441\u0435\u0442\u0435\u0439, \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-181665","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412\u043e FreeBSD \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043e 7 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439, \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043e\u0434\u043d\u0430 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0441 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