{"id":53577,"date":"2019-12-05T00:00:00","date_gmt":"2019-12-04T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/mnozhestvennye-uyazvimosti-v-openbsd"},"modified":"2020-02-18T14:01:30","modified_gmt":"2020-02-18T11:01:30","slug":"mnozhestvennye-uyazvimosti-v-openbsd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/mnozhestvennye-uyazvimosti-v-openbsd","title":{"rendered":"Mitmed haavatavused OpenBSD-s","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Qualys Labs'i spetsialistid avastasid mitu turvaprobleemi, mis on seotud v\u00f5imalusega petta BSD paroolivaatlust mehhanisme haldavaid programme (sarnaneb PAM-iga). Pettus seisneb kasutajanime «-schallenge» v\u00f5i «-schallenge:passwd» edastamises, mis t\u00f5lgendatakse mitte kui kasutajanime, vaid kui valikut. P\u00e4rast seda aktsepteerib s\u00fcsteem mistahes parooli. Ohustatud, st \u00f5igustavad l\u00f5puks volitamata juurdep\u00e4\u00e4su, on teenused smtpd, ldapd, radiusd. Teenust sshd ei saa \u00e4ra kasutada, kuna sshd m\u00e4rkab, et kasutaja «-schallenge» ei eksisteeri. Programm su langeb otse\u00fchenduse proovimisel kokku, kuna p\u00fc\u00fcab samuti v\u00e4lja selgitada mitteeksoleva kasutaja uid.<\/p>\n

Samuti paljastati erinevaid haavatavusi xlockis, S\/Key ja Yubikey autentsuses, samuti su's, mis ei ole seotud kasutaja «-schallenge» m\u00e4\u00e4ratlemisega. Haavatavus xlockis v\u00f5imaldab tavalisel kasutajal t\u00f5sta \u00f5igusi auth r\u00fchma tasemele. S\/Key ja Yubikey autentsuse mehhanismide vale t\u00f6\u00f6 kaudu saab t\u00f5sta autentimise \u00f5igusi auth r\u00fchmast root kasutajani, kuid OpenBSD vaike seadistuses ei t\u00f6\u00f6ta see, kuna S\/Key ja Yubikey autentsus on v\u00e4lja l\u00fclitatud. L\u00f5puks v\u00f5imaldab su haavatavus kasutajal t\u00f5sta s\u00fcsteemiressursside piire, n\u00e4iteks avatud failik\u00e4itlejate arvu.<\/p>\n

Probleemid on praeguseks k\u00f5rvaldatud, turvapaigad on saadaval l\u00e4bi tavalise mehhanismi syspatch(8).<\/p>\n

Allikas: linux.org.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0421\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u044b \u0438\u0437 Qualys Labs \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u043b\u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u043e\u0431\u043c\u0430\u043d\u0443\u0442\u044c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b, \u043e\u0442\u0432\u0435\u0447\u0430\u044e\u0449\u0438\u0435 \u0437\u0430 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u044b\u0435 \u0432 BSD \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u044b \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043f\u0430\u0440\u043e\u043b\u0435\u0439 (\u0430\u043d\u0430\u043b\u043e\u0433 PAM). \u041e\u0431\u043c\u0430\u043d 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\u0438\u0442\u043e\u0433\u0435 \u043d\u0435\u0441\u0430\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0434\u043e\u0441\u0442\u0443\u043f, […]<\/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-53577","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\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\udd47Mitmed haavatavused OpenBSD-s | ProHoster","description":"Qualys Labs'i spetsialistid tuvastasid mitmeid turvaprobleeme, mis on seotud v\u00f5imalusega petta BSD paroolikontrolli mehhanisme (sarnane PAM-iga).","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/mnozhestvennye-uyazvimosti-v-openbsd","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"et_EE","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0432 OpenBSD | ProHoster","og:description":"\u0421\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0441\u0442\u044b \u0438\u0437 Qualys Labs \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u043b\u0438 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e 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