V n\u00e1stroji PCP (Performance Co-Pilot), kter\u00fd se pou\u017e\u00edv\u00e1 k shroma\u017e\u010fov\u00e1n\u00ed statistik o v\u00fdkonnosti syst\u00e9mu (nap\u0159\u00edklad v rozhran\u00ed Cockpit), byly zji\u0161t\u011bny dv\u011b zranitelnosti. Prvn\u00ed zranitelnost (CVE-2024-45770) se nach\u00e1z\u00ed v utilit\u011b pmpost, kter\u00e1 slou\u017e\u00ed k odes\u00edl\u00e1n\u00ed zpr\u00e1v do logu a je za ur\u010dit\u00fdch podm\u00ednek spou\u0161t\u011bna s vy\u0161\u0161\u00edmi opr\u00e1vn\u011bn\u00edmi. Vyu\u017eit\u00ed t\u00e9to zranitelnosti umo\u017e\u0148uje vykon\u00e1n\u00ed k\u00f3du s pr\u00e1vy root, ale pro proveden\u00ed \u00fatoku je nutn\u00e9 m\u00edt p\u0159\u00edstup k \u00fa\u010dtu PCP. \u00datok spo\u010d\u00edv\u00e1 v podvr\u017een\u00ed symbolick\u00e9ho odkazu na soubor \"\\\/var\\\/log\\\/pcp\\\/NOTICES\", do kter\u00e9ho se zapisuje z procesu s pr\u00e1vy root, ani\u017e by byl p\u0159i otev\u0159en\u00ed souboru pou\u017eit p\u0159\u00edznak O_NOFOLLOW. <\/p>\n
Druh\u00e1 zranitelnost v PCP (CVE-2024-45769) se t\u00fdk\u00e1 pozadov\u00e9ho procesu pcmd a vede k p\u0159\u00edstupu k pam\u011bti mimo buffer p\u0159i odes\u00edl\u00e1n\u00ed speci\u00e1ln\u011b form\u00e1tovan\u00fdch dat. Nebezpe\u010d\u00ed zranitelnosti sni\u017euje to, \u017ee ve v\u00fdchoz\u00edm nastaven\u00ed je v pcmd zak\u00e1z\u00e1n p\u0159\u00edjem s\u00ed\u0165ov\u00fdch po\u017eadavk\u016f z jin\u00fdch syst\u00e9m\u016f. Zranitelnosti byly odstran\u011bny ve vyd\u00e1n\u00ed PCP 6.3.1. Probl\u00e9my byly zji\u0161t\u011bny b\u011bhem auditu proveden\u00e9ho v\u00fdvoj\u00e1\u0159i z projektu SUSE. <\/p>\n
Krom\u011b toho byla zranitelnost (CVE-2024-45593) zji\u0161t\u011bna v bal\u00ed\u010dkov\u00e9m spr\u00e1vci Nix, kter\u00fd se pou\u017e\u00edv\u00e1 v distribuci NixOS. Zranitelnost umo\u017e\u0148uje p\u0159i rozbalov\u00e1n\u00ed speci\u00e1ln\u011b form\u00e1tovan\u00fdch soubor\u016f ve form\u00e1tu NAR (Nix Archive) zapisovat do libovoln\u00fdch oblast\u00ed souborov\u00e9ho syst\u00e9mu, jak to umo\u017e\u0148uj\u00ed p\u0159\u00edstupov\u00e1 pr\u00e1va, s kter\u00fdmi se zpracovatel prov\u00e1d\u00ed (p\u0159i pou\u017eit\u00ed pozadov\u00e9ho procesu Nix se rozbalov\u00e1n\u00ed prov\u00e1d\u00ed s pr\u00e1vy root). Probl\u00e9m se projevuje ve v\u011btvi Nix 2.24 a byl odstran\u011bn ve vyd\u00e1n\u00ed 2.24.6. <\/p>\n
Dodate\u010dn\u011b lze zm\u00ednit zve\u0159ejn\u011bn\u00ed varov\u00e1n\u00ed o zji\u0161t\u011bn\u00ed kritick\u00e9 zranitelnosti, kter\u00e1 se t\u00fdk\u00e1 distribuc\u00ed GNU\\\/Linux a umo\u017e\u0148uje vzd\u00e1len\u011b a bez autentizace dos\u00e1hnout vykon\u00e1n\u00ed k\u00f3du v syst\u00e9mu. V sou\u010dasn\u00e9 dob\u011b nejsou uvedeny \u017e\u00e1dn\u00e9 informace o podstat\u011b probl\u00e9mu a podsysyst\u00e9mech, kter\u00e9 se ho t\u00fdkaj\u00ed, bylo pouze uvedeno, \u017ee na z\u00e1klad\u011b dohody s v\u00fdvoj\u00e1\u0159i distribuc\u00ed pl\u00e1nuj\u00ed zve\u0159ejnit po\u010d\u00e1te\u010dn\u00ed zpr\u00e1vu o probl\u00e9mu 30. z\u00e1\u0159\u00ed a \u00faplnou zpr\u00e1vu s detaily \u2014 6. \u0159\u00edjna. Probl\u00e9m zat\u00edm nem\u00e1 p\u0159i\u0159azenou CVE. Podle tvrzen\u00ed v\u00fdzkumn\u00edka, kter\u00fd probl\u00e9m zjistil, byly zranitelnosti ud\u011bleny kritick\u00e1 \u00farove\u0148 nebezpe\u010d\u00ed (9.9 z 10) spole\u010dnostmi Canonical a Red Hat. \u0412 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u0438 PCP (Performance Co-Pilot), \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u043c \u0434\u043b\u044f \u0441\u0431\u043e\u0440\u0430 \u0441\u0442\u0430\u0442\u0438\u0441\u0442\u0438\u043a\u0438 \u043e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0441\u0438\u0441\u0442\u0435\u043c\u044b (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0432 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0435 Cockpit), \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438. \u041f\u0435\u0440\u0432\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-45770) \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u0443\u0442\u0438\u043b\u0438\u0442\u0435 pmpost, \u043f\u0440\u0435\u0434\u043d\u0430\u0437\u043d\u0430\u0447\u0435\u043d\u043d\u043e\u0439 \u0434\u043b\u044f \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0438 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0439 \u0432 \u043b\u043e\u0433 \u0438 \u043f\u0440\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u044b\u0445 \u0443\u0441\u043b\u043e\u0432\u0438\u044f\u0445 \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u043c\u043e\u0439 \u0441 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u043d\u044b\u043c\u0438 \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u044f\u043c\u0438. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 \u0441 \u043f\u0440\u0430\u0432\u0430\u043c\u0438 root, \u043d\u043e \u0434\u043b\u044f \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e […]<\/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-119929","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\udd47Zranitelnosti v PCP a Nix, kter\u00e9 umo\u017e\u0148uj\u00ed zv\u00fd\u0161en\u00ed opr\u00e1vn\u011bn\u00ed v syst\u00e9mu | ProHoster","description":"Ve software PCP (Performance Co-Pilot), pou\u017e\u00edvan\u00e9m pro sb\u011br statistik o v\u00fdkonu syst\u00e9mu (nap\u0159\u00edklad pou\u017e\u00edvan\u00e9m v rozhran\u00ed Cockpit), byly odhaleny dv\u011b 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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"