{"id":115448,"date":"2024-04-30T13:53:09","date_gmt":"2024-04-30T11:53:09","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-realizaczii-yazyka-r-pozvolyayushhaya-vypolnit-kod-pri-obrabotke-fajlov-rds-i-rdx"},"modified":"2024-04-30T13:53:09","modified_gmt":"2024-04-30T11:53:09","slug":"uyazvimost-v-realizaczii-yazyka-r-pozvolyayushhaya-vypolnit-kod-pri-obrabotke-fajlov-rds-i-rdx","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/uyazvimost-v-realizaczii-yazyka-r-pozvolyayushhaya-vypolnit-kod-pri-obrabotke-fajlov-rds-i-rdx","title":{"rendered":"Ranljivost u implementaciji jezika R koja omogu\u0107ava izvr\u0161avanje koda prilikom obrade rds i rdx datoteka.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

U glavnoj implementaciji programskog jezika R, orijentiranog na rje\u0161avanje zadataka statisti\u010dke obrade, analize i vizualizacije podataka, otkrivena je kriti\u010dna ranjivost (CVE-2024-27322) koja dovodi do izvr\u0161enja koda prilikom deserializacije neprovjerenih podataka. Ranjivost se mo\u017ee iskoristiti prilikom obrade posebno oblikovanih datoteka u formatima RDS (R Data Serialization) i RDX, koji se koriste za razmjenu podataka izme\u0111u aplikacija. Problem je rije\u0161en u izdanju R 4.4.0. Pra\u0107enje izdanja a\u017euriranja paketa u distribucijama mo\u017ee se izvr\u0161iti na stranicama Debian, Ubuntu, RHEL, SUSE\/openSUSE, Fedora, Arch, FreeBSD. <\/p>\n

Ranjivost je uzrokovana osobinom rada funkcije readRDS, koja se koristi za u\u010ditavanje datoteka u formatima RDS i RDX, koji omogu\u0107uju prijenos serializiranih objekata R za obradu na drugom sustavu. Serializacija omogu\u0107uje snimanje stanja i razmjenu skupova podataka izme\u0111u programa. Format RDS omogu\u0107uje pohranu stanja o jednom objektu, dok format RDX u kombinaciji s datotekama RDB omogu\u0107uje prijenos informacija o vi\u0161e objekata. Problem je povezan s tim \u0161to format RDS podr\u017eava objektni kod PROMSXP, povezan s tipom Promise, koji se koristi za definiranje izraza pozvanih u asinhronom re\u017eimu tijekom kori\u0161tenja povezanih vrijednosti. <\/p>\n

Tijekom deserializacije, za odre\u0111ivanje objekta Promise koriste se tri sastavnice \u2014 vrijednost Promisea, izraz i okru\u017eenje. Ako za tip Promisea nije unaprijed postavljena izra\u010dunata vrijednost, ona se izra\u010dunava tijekom deserializacije izvr\u0161avanjem izraza pomo\u0107u funkcije \u00abeval\u00bb. Na taj na\u010din napada\u010d mo\u017ee posti\u0107i izvr\u0161avanje proizvoljnog koda na jeziku R, zamjenjuju\u0107i ga izrazom povezanim s neizra\u010dunatim vrijednostima u RDS ili RDX datotekama.
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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