{"id":169899,"date":"2026-04-24T18:24:34","date_gmt":"2026-04-24T16:24:34","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-rust-coreutils-vyyavleno-113-uyazvimostej-v-ubuntu-26-04-vozvrashheny-cp-mv-i-rm-iz-gnu-coreutils"},"modified":"2026-04-24T18:24:34","modified_gmt":"2026-04-24T16:24:34","slug":"v-rust-coreutils-vyyavleno-113-uyazvimostej-v-ubuntu-26-04-vozvrashheny-cp-mv-i-rm-iz-gnu-coreutils","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/v-rust-coreutils-vyyavleno-113-uyazvimostej-v-ubuntu-26-04-vozvrashheny-cp-mv-i-rm-iz-gnu-coreutils","title":{"rendered":"A Rust Coreutils-ben 113 sebezhet\u0151s\u00e9get fedeztek fel. Az Ubuntu 26.04-be visszat\u00e9rtek a GNU Coreutils cp, mv \u00e9s rm parancsai.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>A Canonical k\u00f6zz\u00e9tette a Rust Coreutils nev\u0171 uutils coreutils eszk\u00f6zk\u00e9szlet f\u00fcggetlen biztons\u00e1gi auditj\u00e1nak el\u0151zetes eredm\u00e9nyeit, amelyet a Rust nyelven \u00edrtak, \u00e9s amelyet r\u00e9szben az Ubuntu GNU Coreutils csomagja helyett haszn\u00e1lnak. Az auditot a Zellic v\u00e9gezte, amely tapasztalattal rendelkezik a Rust nyelv\u0171 projektek sebezhet\u0151s\u00e9geinek elemz\u00e9s\u00e9ben. Az ellen\u0151rz\u00e9s sor\u00e1n 113 biztons\u00e1gi probl\u00e9m\u00e1t azonos\u00edtottak.    <\/p>\n<p>Jelenleg el\u00e9rhet\u0151 egy jelent\u00e9s (PDF, 156 oldal) az els\u0151 auditl\u00e9p\u00e9s eredm\u00e9nyeivel, amely a legfontosabb seg\u00e9dprogramokat tartalmazza az uutils csomagb\u00f3l. Az els\u0151 l\u00e9p\u00e9st 2025 december\u00e9t\u0151l 2026 janu\u00e1rj\u00e1ig hajtott\u00e1k v\u00e9gre, \u00e9s 73 sebezhet\u0151s\u00e9get azonos\u00edtottak, ebb\u0151l 7 kritikus, 11 vesz\u00e9lyes, 29 k\u00f6zepesen vesz\u00e9lyes, \u00e9s 26 nem vesz\u00e9lyes.    <\/p>\n<p>A m\u00e1sodik audit szakaszt febru\u00e1rt\u00f3l m\u00e1rciusig v\u00e9gezt\u00e9k, \u00e9s a m\u00e1sodlagos eszk\u00f6z\u00f6ket vizsg\u00e1lt\u00e1k, amelyeket az els\u0151 szakaszban nem ellen\u0151riztek. A m\u00e1sodik szakasz sor\u00e1n 40 sebezhet\u0151s\u00e9get tal\u00e1ltak, a vesz\u00e9lyess\u00e9g\u00fckr\u0151l azonban egyel\u0151re nem \u00e1ll rendelkez\u00e9sre r\u00e9szletes inform\u00e1ci\u00f3 (a jelent\u00e9st k\u00e9s\u0151bb tervezik k\u00f6zz\u00e9tenni). Az \u00f6sszes azonos\u00edtott probl\u00e9ma inform\u00e1ci\u00f3j\u00e1t m\u00e1r \u00e1tadt\u00e1k az uutils fejleszt\u0151inek, \u00e9s a sebezhet\u0151s\u00e9gek nagy r\u00e9sz\u00e9t az uutils 0.5-0.8 kiad\u00e1saiban csendben orvosolt\u00e1k, an\u00e9lk\u00fcl, hogy jelezt\u00e9k volna a jav\u00edt\u00e1sok kapcsolat\u00e1t a sebezhet\u0151s\u00e9gekkel.        <\/p>\n<p>A rust-coreutils csomagot alap\u00e9rtelmezetten be\u00e9p\u00edtett\u00e9k az Ubuntu 25.10 \u0151szi kiad\u00e1s\u00e1ba, de a vizsg\u00e1lat sor\u00e1n felt\u00e1rt probl\u00e9m\u00e1k figyelembev\u00e9tel\u00e9vel az Ubuntu 26.04 LTS \u00e1gon visszat\u00e9rtek a GNU Coreutils csomag cp, mv \u00e9s rm eszk\u00f6zeihez. Megjegyzik, hogy \u00e1prilis 22-i \u00e1llapot szerint ezekben az eszk\u00f6z\u00f6kben 8 ismert verseng\u0151 \u00e1llapot maradt jav\u00edtatlan. A t\u00f6bbi eszk\u00f6z a rust-coreutils 0.8.0 kiad\u00e1s\u00e1b\u00f3l van. Az Ubuntu 26.10-ben a fejleszt\u0151k teljesen \u00e1t akarnak t\u00e9rni a rust-coreutils haszn\u00e1lat\u00e1ra.      <\/p>\n<p>A rendszerszint\u0171 eszk\u00f6z\u00f6k sebezhet\u0151s\u00e9gei k\u00fcl\u00f6n\u00f6sen vesz\u00e9lyesek, mivel olyan szkriptekben haszn\u00e1lj\u00e1k \u0151ket, amelyeket root jogosults\u00e1gokkal futtatnak. P\u00e9ld\u00e1ul a uutils coreutils 0.3.0 verzi\u00f3j\u00e1ban jav\u00edtott rm eszk\u00f6z sebezhet\u0151s\u00e9ge kihaszn\u00e1lhat\u00f3 volt, amikor a cron napi szkriptjei k\u00f6z\u00fcl a \/etc\/cron.daily\/apport szkriptet a root jogosults\u00e1g\u00e1val futtatt\u00e1k, amely rekursz\u00edvan t\u00f6r\u00f6lte a \/var\/crash mappa tartalm\u00e1t, amely minden felhaszn\u00e1l\u00f3 sz\u00e1m\u00e1ra \u00edr\u00e1sra el\u00e9rhet\u0151.       <\/p>\n<p>Az els\u0151 jelent\u00e9sben kritikusnak jel\u00f6lt sebezhet\u0151s\u00e9gek k\u00f6z\u00fcl:  <\/p>\n<ul>\n<li class=\"l\"> A chroot seg\u00e9dprogram hib\u00e1ja, amely a \u00e2\u20ac\u201cuserspec opci\u00f3 feldolgoz\u00e1s\u00e1b\u00f3l ad\u00f3dik a chroot() h\u00edv\u00e1sa ut\u00e1n, de a jogosults\u00e1gok vissza\u00e1ll\u00edt\u00e1sa el\u0151tt. A glibc-vel rendelkez\u0151 rendszereken a getpwnam() f\u00fcggv\u00e9nyen kereszt\u00fcl t\u00f6rt\u00e9n\u0151 n\u00e9vfelold\u00e1s az \/etc\/nsswitch.conf f\u00e1jl olvas\u00e1s\u00e1hoz vezet, amelyet az NSS (N\u00e9vszolg\u00e1ltat\u00e1si kapcsol\u00e1s) alkalmaz. Mivel a chroot() h\u00edv\u00e1sa el\u0151tt a NSS feldolgoz\u00e1sa megt\u00f6rt\u00e9nik, az \/etc\/nsswitch.conf f\u00e1jl a \u00faj gy\u00f6k\u00e9r sz\u00e1m\u00e1ra t\u00f6lt\u0151dik be, de a NSS k\u00f6nyvt\u00e1rakat a jogosults\u00e1gok vissza\u00e1ll\u00edt\u00e1sa el\u0151tt t\u00f6ltik be. Ha a felhaszn\u00e1l\u00f3 \u00edr\u00e1si hozz\u00e1f\u00e9r\u00e9ssel rendelkezik az \u00faj gy\u00f6kh\u00f6z, akkor helyettes\u00edtheti a saj\u00e1t NSS k\u00f6nyvt\u00e1rait, \u00e9s el\u00e9rheti a k\u00f3dot root jogosults\u00e1ggal.\n<li class=\"l\"> A f\u00e1jlhozz\u00e1f\u00e9r\u00e9si jogok megv\u00e1ltoztat\u00e1sa a mkfifo seg\u00e9dprogram \u00e1ltal l\u00e9trehozott n\u00e9vleges csatorna (FIFO) l\u00e9trehoz\u00e1s\u00e1nak hib\u00e1ja ut\u00e1n - ha l\u00e9tez\u0151 f\u00e1jlt adunk meg argumentumk\u00e9nt, a mkfifo hiba\u00fczenetet ad vissza, de nem fejezi be a munk\u00e1t a v\u00e1rt m\u00f3don, hanem a set_permissions() h\u00edv\u00e1s\u00e1t v\u00e9grehajtva megv\u00e1ltoztatja a l\u00e9tez\u0151 f\u00e1jl hozz\u00e1f\u00e9r\u00e9si jogait. A 022 umask figyelembev\u00e9tel\u00e9vel a sebezhet\u0151s\u00e9g lehet\u0151v\u00e9 teszi a f\u00e1jlhozz\u00e1f\u00e9r\u00e9si jogok 644-re (rw-r--r--) val\u00f3 megv\u00e1ltoztat\u00e1s\u00e1t \u00e9s hozz\u00e1f\u00e9r\u00e9st biztos\u00edt azokhoz a f\u00e1jlokhoz, amelyekhez nem volt enged\u00e9ly a olvas\u00e1sra.\n<li class=\"l\"> A chmod seg\u00e9dprogram \u00e2\u20ac\u201cpreserve-root korl\u00e1toz\u00e1sainak megker\u00fcl\u00e9se, amely megakad\u00e1lyozza a rekurz\u00edv m\u0171veletek v\u00e9grehajt\u00e1s\u00e1t a f\u00e1jlrendszer gy\u00f6k\u00e9r\u00e9r\u0151l. A sebezhet\u0151s\u00e9g (CVE-2026-35338) abb\u00f3l ad\u00f3dik, hogy a k\u00f3dban csak a pontos \u00fat egyez\u00e9s\u00e9t ellen\u0151rizt\u00e9k a '\/' jellel, \u00e9s nem t\u00f6rt\u00e9nt f\u00e1jl\u00fatvonal kanoniz\u00e1l\u00e1s. A vizsg\u00e1lat megker\u00fcl\u00e9s\u00e9hez elegend\u0151 egy olyan \u00fatpontot haszn\u00e1lni, mint a '\/..\/' vagy egy szimbolikus hivatkoz\u00e1s a gy\u00f6k\u00e9rhez. A sebezhet\u0151s\u00e9g vesz\u00e9lyes, mert ha valaki a saj\u00e1t \u00fatj\u00e1t be tudja helyezni egy rendszerszkripthez, amely a chmod parancsot h\u00edvja, rekurz\u00edv f\u00e1jlhozz\u00e1f\u00e9r\u00e9s-m\u00f3dos\u00edt\u00e1st \u00e9rhet el az \u00f6sszes f\u00e1jlra a f\u00e1jlrendszerben.\n<li class=\"l\"> Az rm seg\u00e9dprogramba b\u00e1rmilyen opci\u00f3 r\u00f6vid\u00edt\u00e9s\u00e9nek kezel\u00e9se megengedett, mint p\u00e9ld\u00e1ul az &#171;&#8212;no-preserve-root&#187; (&#171;&#8212;n&#187;, &#171;&#8212;no&#187;, &#171;&#8212;no-p&#187;, &#171;&#8212;no-pres&#187; stb.) a gy\u00f6k\u00e9r mapp\u00e1val v\u00e9gzett rekurz\u00edv m\u0171veletek v\u00e9delm\u00e9nek kikapcsol\u00e1s\u00e1hoz (p\u00e9ld\u00e1ul megadhatod a &#171;rm -rf &#8212;n \\\/&#187; parancsot, \u00e9s v\u00e9letlen\u00fcl t\u00f6r\u00f6lheted az \u00f6sszes adatot. A GNU Coreutils hasonl\u00f3 r\u00f6vid\u00edt\u00e9seket nem enged\u00e9lyez).\n<li class=\"l\"> A gy\u00f6k\u00e9r f\u00e1jlrendszerrel v\u00e9gzett rekurz\u00edv m\u0171veleteket megtilt\u00f3 &#171;&#8212;preserve-root&#187; korl\u00e1toz\u00e1s megker\u00fcl\u00e9se az rm seg\u00e9dprogramban szimbolikus hivatkoz\u00e1s p\u00f3tl\u00e1s\u00e1val &#171;\\\/&#187;.\n<li class=\"l\"> Nem l\u00e9tezik teljes v\u00e9delem a ponttal kezd\u0151d\u0151 k\u00f6nyvt\u00e1rak megad\u00e1s\u00e1val szemben. P\u00e9ld\u00e1ul, amikor a &#171;rm -rf .&#187; parancsot hajtod v\u00e9gre, a seg\u00e9dprogram hib\u00e1t jelez, de a &#171;rm -rf .\\\/&#187; vagy &#171;rm -rf .\\\/\\\/&#187; megad\u00e1sakor csendben t\u00f6rli a jelenlegi k\u00f6nyvt\u00e1rat.\n<li class=\"l\"> A kill seg\u00e9dprogram argumentumainak elemz\u00e9s\u00e9ben fell\u00e9p\u0151 hiba lehet\u0151v\u00e9 teszi, hogy az azonos\u00edt\u00f3 &#171;-1&#187; (kill -1) megad\u00e1sakor jelet k\u00fcldj\u00fcnk az \u00f6sszes folyamatnak a rendszerben.     <\/ul>\n<p> In other respects, most vulnerabilities fall under the TOCTOU (Time-Of-Check-To-Time-Of-Use) category, implying the existence of a race condition that can change data between the validation of information and the execution of an operation with it, for example, substituting a file with a symbolic link during the interval between validation and the start of the operation. In the context of using cp and mv utilities in system scripts run with root privileges, such vulnerabilities allow arbitrary files to be copied or overwritten.<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=65278\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Canonical \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u043f\u0440\u0435\u0434\u0432\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0438\u0442\u043e\u0433\u0438 \u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0433\u043e \u0430\u0443\u0434\u0438\u0442\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f uutils coreutils (Rust Coreutils), \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u043e\u0433\u043e \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Rust \u0438 \u0447\u0430\u0441\u0442\u0438\u0447\u043d\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0432 Ubuntu \u0432\u043c\u0435\u0441\u0442\u043e \u043f\u0430\u043a\u0435\u0442\u0430 GNU Coreutils. \u0410\u0443\u0434\u0438\u0442 \u0431\u044b\u043b \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Zellic, \u0438\u043c\u0435\u044e\u0449\u0435\u0439 \u043e\u043f\u044b\u0442 \u0430\u043d\u0430\u043b\u0438\u0437\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0432 \u043f\u0440\u043e\u0435\u043a\u0442\u0430\u0445 \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Rust. \u0412 \u0445\u043e\u0434\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0431\u044b\u043b\u043e \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e 113 \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u044c\u044e. \u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f \u0443\u0436\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043e\u0442\u0447\u0451\u0442 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-169899","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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The cp, mv, and rm utilities from GNU Coreutils have been reinstated in Ubuntu 26.04 | ProHoster","description":"The company Canonical has published preliminary results of an independent security audit of the uutils coreutils (Rust Coreutils) toolkit, written in Rust and partially used in Ubuntu instead of the GNU package.","canonical_url":"https:\/\/prohoster.info\/hu\/blog\/news\/v-rust-coreutils-vyyavleno-113-uyazvimostej-v-ubuntu-26-04-vozvrashheny-cp-mv-i-rm-iz-gnu-coreutils","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hu_HU","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\u0412 Rust Coreutils \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u043e 113 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439. \u0412 Ubuntu 26.04 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0435\u043d\u044b cp, mv \u0438 rm \u0438\u0437 GNU Coreutils | ProHoster","og:description":"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Canonical \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \u043f\u0440\u0435\u0434\u0432\u0430\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0438\u0442\u043e\u0433\u0438 \u043d\u0435\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0433\u043e \u0430\u0443\u0434\u0438\u0442\u0430 \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u0430\u0440\u0438\u044f uutils coreutils (Rust Coreutils), \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u043e\u0433\u043e \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Rust \u0438 \u0447\u0430\u0441\u0442\u0438\u0447\u043d\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0433\u043e \u0432 Ubuntu \u0432\u043c\u0435\u0441\u0442\u043e \u043f\u0430\u043a\u0435\u0442\u0430 GNU.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/v-rust-coreutils-vyyavleno-113-uyazvimostej-v-ubuntu-26-04-vozvrashheny-cp-mv-i-rm-iz-gnu-coreutils","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2026-04-24T16:24:34+00:00","article:modified_time":"2026-04-24T16:24:34+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/169899","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=169899"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/169899\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=169899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=169899"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=169899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}