{"id":122970,"date":"2025-03-25T10:22:49","date_gmt":"2025-03-25T08:22:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-landrun-razvivaet-neprivilegirovannuyu-sistemu-izolyaczii-prilozhenij"},"modified":"2025-03-25T10:22:49","modified_gmt":"2025-03-25T08:22:49","slug":"proekt-landrun-razvivaet-neprivilegirovannuyu-sistemu-izolyaczii-prilozhenij","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/proekt-landrun-razvivaet-neprivilegirovannuyu-sistemu-izolyaczii-prilozhenij","title":{"rendered":"Projekt Landrun rozv\u00edj\u00ed neprivilegovan\u00fd syst\u00e9m izolace aplikac\u00ed","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Projekt Landrun zah\u00e1jil v\u00fdvoj nov\u00e9ho syst\u00e9mu pro izolovan\u00e9 spou\u0161t\u011bn\u00ed jednotliv\u00fdch aplikac\u00ed. Pro izolaci se vyu\u017e\u00edv\u00e1 LSM-modul j\u00e1dra Linux Landlock, kter\u00fd umo\u017e\u0148uje obej\u00edt se bez prov\u00e1d\u011bn\u00ed privilegovan\u00fdch operac\u00ed p\u0159i vytv\u00e1\u0159en\u00ed sandboxov\u00e9ho prost\u0159ed\u00ed. Sv\u00fdmi \u00fakoly je Landrun bl\u00edzk\u00fd utilit\u011b Firejail, ale li\u0161\u00ed se jednodu\u0161\u0161\u00ed implementac\u00ed, lehkost\u00ed a mo\u017enost\u00ed pr\u00e1ce pod b\u011b\u017en\u00fdm neprivilegovan\u00fdm u\u017eivatelem bez dod\u00e1n\u00ed s p\u0159\u00edznakem suid. K\u00f3d projektu je naps\u00e1n v jazyce Go a \u0161\u00ed\u0159\u00ed se pod licenc\u00ed GPLv2. <\/p>\n

Mechanismus Landlock umo\u017e\u0148uje neprivilegovan\u00fdm program\u016fm omezit pou\u017eit\u00ed objekt\u016f j\u00e1dra Linux, jako jsou hierarchie soubor\u016f, s\u00ed\u0165ov\u00e9 sockety a ioctl. Na rozd\u00edl od prostor\u016f n\u00e1zv\u016f a filtrov\u00e1n\u00ed syst\u00e9mov\u00fdch vol\u00e1n\u00ed je izolovan\u00e9 prost\u0159ed\u00ed vytv\u00e1\u0159eno j\u00e1drem Linux ve form\u011b dal\u0161\u00ed vrstvy nad existuj\u00edc\u00edmi mechanismy spr\u00e1vy p\u0159\u00edstupu. Pro interakci se subsyst\u00e9mem Landlock se v utilit\u011b landrun pou\u017e\u00edv\u00e1 knihovna go-landlock od v\u00fdvoj\u00e1\u0159\u016f LandLock. <\/p>\n

Landrun umo\u017e\u0148uje sn\u00ed\u017eit riziko kompromitace hlavn\u00edho syst\u00e9mu p\u0159i spou\u0161t\u011bn\u00ed ned\u016fv\u011bryhodn\u00fdch nebo potenci\u00e1ln\u011b zraniteln\u00fdch program\u016f. Z funkc\u00ed se uv\u00e1d\u00ed podpora v\u00fdb\u011brov\u00e9ho omezen\u00ed p\u0159\u00edstupu na \u00farovni jednotliv\u00fdch adres\u00e1\u0159\u016f, vazba opr\u00e1vn\u011bn\u00ed na cesty k soubor\u016fm (povolen\u00ed nebo z\u00e1kaz \u010dten\u00ed, z\u00e1pisu a prov\u00e1d\u011bn\u00ed) a kontrola nad iniciac\u00ed a p\u0159\u00edjmem TCP spojen\u00ed. <\/p>\n

Nap\u0159\u00edklad pomoc\u00ed Landrun lze zak\u00e1zat spou\u0161t\u011bn\u00ed spustiteln\u00fdch soubor\u016f, povolit z\u00e1pis pouze do specifick\u00e9ho podadres\u00e1\u0159e s daty, zak\u00e1zat vytv\u00e1\u0159en\u00ed naslouchac\u00edch soket\u016f pro p\u0159\u00edjem s\u00ed\u0165ov\u00fdch p\u0159ipojen\u00ed a povolit odes\u00edl\u00e1n\u00ed s\u00ed\u0165ov\u00fdch po\u017eadavk\u016f pouze na ur\u010den\u00e9 TCP porty. V nejjednodu\u0161\u0161\u00edm p\u0159\u00edpad\u011b pro zak\u00e1z\u00e1n\u00ed z\u00e1pisu, spou\u0161t\u011bn\u00ed a s\u00ed\u0165ov\u00fdch funkc\u00ed lze program spustit p\u0159\u00edkazem \"landrun -ro \/\", a pro izolaci nginx lze pou\u017e\u00edt: landrun -rox \/usr\/bin -ro \/lib,\/lib64,\/var\/www -rwx \/var\/log -bind-tcp 80,443 \/usr\/bin\/nginx <\/p>\n

V pl\u00e1nech do budoucna se zmi\u0148uje roz\u0161\u00ed\u0159en\u00e9 \u0159\u00edzen\u00ed p\u0159\u00edstupu k souborov\u00e9mu syst\u00e9mu, podpora UDP a spr\u00e1va prost\u0159edk\u016f proces\u016f. Pro omezen\u00ed p\u0159\u00edstupu na \u00farovni souborov\u00e9ho syst\u00e9mu je pot\u0159eba minim\u00e1ln\u011b j\u00e1dro Linux 5.13, a pro s\u00ed\u0165ov\u00e1 omezen\u00ed - 6.8. <\/p>\n

D\u00e1le lze zm\u00ednit, \u017ee do k\u00f3du Firejail byly ji\u017e p\u0159ijaty zm\u011bny, kter\u00e9 umo\u017e\u0148uj\u00ed vyu\u017eit\u00ed pod syst\u00e9mu j\u00e1dra Landlock pro izolaci bez suid-bit\u016f a zvy\u0161ov\u00e1n\u00ed privilegi\u00ed, ale vyd\u00e1n\u00ed s touto podporou je\u0161t\u011b nebylo publikov\u00e1no.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041f\u0440\u043e\u0435\u043a\u0442 Landrun \u043d\u0430\u0447\u0430\u043b \u0440\u0430\u0437\u0432\u0438\u0442\u0438\u0435 \u043d\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0434\u043b\u044f \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439. \u0414\u043b\u044f \u0438\u0437\u043e\u043b\u044f\u0446\u0438\u0438 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d LSM-\u043c\u043e\u0434\u0443\u043b\u044c \u044f\u0434\u0440\u0430 Linux Landlock, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0438\u0439 \u043e\u0431\u043e\u0439\u0442\u0438\u0441\u044c \u0431\u0435\u0437 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f sandbox-\u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f. \u041f\u043e \u0441\u0432\u043e\u0438\u043c \u0437\u0430\u0434\u0430\u0447\u0430\u043c Landrun \u0431\u043b\u0438\u0437\u043e\u043a \u043a \u0443\u0442\u0438\u043b\u0438\u0442\u0435 Firejail, \u043d\u043e \u043e\u0442\u043b\u0438\u0447\u0430\u0435\u0442\u0441\u044f \u0431\u043e\u043b\u0435\u0435 \u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439, \u043b\u0435\u0433\u043a\u043e\u0432\u0435\u0441\u043d\u043e\u0441\u0442\u044c\u044e \u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e\u0434 \u043e\u0431\u044b\u0447\u043d\u044b\u043c \u043d\u0435\u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u0431\u0435\u0437 \u043f\u043e\u0441\u0442\u0430\u0432\u043a\u0438 \u0441 \u0444\u043b\u0430\u0433\u043e\u043c suid. \u041a\u043e\u0434 […]<\/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-122970","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Projekt Landrun vyv\u00edj\u00ed nepriviligovan\u00fd syst\u00e9m izolace aplikac\u00ed | 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