{"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":"

Apache Log4j, populaarne raamistik logide haldamiseks Java rakendustes, tuvastati kriitiline haavatavus, mis v\u00f5imaldab t\u00e4ita suvalist koodi, kui logisse kirjutatakse spetsiaalselt vormindatud v\u00e4\u00e4rtus formaadis . R\u00fcnnakut saab l\u00e4bi viia Java rakendustes, mis logivad v\u00e4lisest allikast saadud v\u00e4\u00e4rtusi, n\u00e4iteks probleemsete v\u00e4\u00e4rtuste kuvamisel veateadetes. <\/p>\n

On t\u00e4heldatud, et probleem on peaaegu k\u00f5iki projekte, mis kasutavad selliseid raamistikke nagu Apache Struts, Apache Solr, Apache Druid v\u00f5i Apache Flink, sealhulgas Steam, Apple iCloud, Minecrafti kliendid ja serverid. Oodatakse, et haavatavus v\u00f5ib p\u00f5hjustada massiliste r\u00fcnnakute laine ettev\u00f5tte rakendustele, kordades kriitiliste haavatavuste ajalugu Apache Strutsi raamistikus, mida hinnanguliselt kasutab 65% Fortune 100 ettev\u00f5tetest. Samuti on juba registreeritud katseid skaneerida v\u00f5rku haavatavate s\u00fcsteemide leidmiseks. <\/p>\n

Probleemi s\u00fcvendab see, et juba on avaldatud t\u00f6\u00f6tav eksploiteerimine, kuid stabilsete harude jaoks pole praeguseks aega parandusi koostatud. CVE-identifikaator on veel m\u00e4\u00e4ramata. Parandus on lisatud ainult testimise harusse log4j-2.15.0-rc1. Haavatavuse blokeerimise ajutiseks lahenduseks soovitatakse seada parameeter log4j2.formatMsgNoLookups v\u00e4\u00e4rtusele true. <\/p>\n

Probleem tekkis seoses sellega, et log4j toetab erimaskide k\u00e4sitlemist logitavates stringides, kus v\u00f5isid toimuda JNDI (Java Naming and Directory Interface) p\u00e4ringud. R\u00fcnnak piirdub stringi edastamisega koos asendamisega , mille t\u00f6\u00f6tlemisel log4j saadab server<\/a> attacker.com LDAP-p\u00e4ringu Java klassi teele. Tagastatud serverilt<\/a> r\u00fcnnaku tee (nt http:\/\/second-stage.attacker.com\/Exploit.class) laaditakse ja t\u00e4idetakse praeguse protsessi kontekstis, mis v\u00f5imaldab r\u00fcndajal k\u00e4ivitada suvalist koodi s\u00fcsteemis, kasutades praeguse rakenduse \u00f5igusi. <\/p>\n

T\u00e4iendamine 1: Haavatavusele on m\u00e4\u00e4ratud identifikaator CVE-2021-44228. <\/p>\n

T\u00e4iendamine 2: On leitud viis kaitse \u00fcletamiseks, mis on lisatud versioonis log4j-2.15.0-rc1. Pakutud on uus v\u00e4rskendus log4j-2.15.0-rc2, mis tagab p\u00f5hjalikuma kaitse haavatavuse vastu. Koodis on v\u00e4lja toodud muudatus, mis on seotud valesti vormindatud JNDI URL-i kasutamisel v\u00f5imaliku kriitilise t\u00f5rke puudumisega.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\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\udd47Kohutav haavatavus Apache Log4j'is, mis m\u00f5jutab paljusid Java-projekte | ProHoster","description":"Apache Log4j'is, Java-rakendustes logimise korraldamiseks populaarne raamistik, on 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