{"id":106652,"date":"2023-02-06T18:48:11","date_gmt":"2023-02-06T16:48:12","guid":{"rendered":"https:\/\/prohoster.info\/?p=106652"},"modified":"2023-02-07T12:08:50","modified_gmt":"2023-02-07T10:08:50","slug":"uyazvimost-v-imagemagick-privodyashhaya-k-utechke-soderzhimogo-lokalnyh-fajlov","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-imagemagick-privodyashhaya-k-utechke-soderzhimogo-lokalnyh-fajlov","title":{"rendered":"Sebezhet\u0151s\u00e9g az ImageMagick-ben, amely helyi f\u00e1jlok tartalm\u00e1nak sziv\u00e1rg\u00e1s\u00e1hoz vezet.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Az ImageMagick csomagban, amelyet gyakran haszn\u00e1lnak a webfejleszt\u0151k k\u00e9pek \u00e1talak\u00edt\u00e1s\u00e1ra, egy CVE-2022-44268 azonos\u00edt\u00f3j\u00fa sebezhet\u0151s\u00e9get fedeztek fel, amely f\u00e1jlok tartalm\u00e1nak kisziv\u00e1rg\u00e1s\u00e1hoz vezethet, ha az \u00fcgyf\u00e9l \u00e1ltal el\u0151k\u00e9sz\u00edtett PNG-k\u00e9peket \u00e1talak\u00edtanak az ImageMagick seg\u00edts\u00e9g\u00e9vel. A sebezhet\u0151s\u00e9g a k\u00fcls\u0151 k\u00e9pek feldolgoz\u00e1s\u00e1t v\u00e9gz\u0151 rendszereket fenyegeti, amelyek lehet\u0151v\u00e9 teszik a feldolgoz\u00e1si eredm\u00e9nyek let\u00f6lt\u00e9s\u00e9t. <\/p>\n

A sebezhet\u0151s\u00e9g abb\u00f3l ad\u00f3dik, hogy az ImageMagick a PNG-k\u00e9pek feldolgoz\u00e1sa sor\u00e1n a metaadatok blokkban tal\u00e1lhat\u00f3 \u201eprofile\u201d param\u00e9ter tartalm\u00e1t haszn\u00e1lja fel annak a f\u00e1jlnak a nev\u00e9nek meghat\u00e1roz\u00e1s\u00e1ra, amely a kimeneti f\u00e1jlba be lesz \u00e1gyazva. \u00cdgy a t\u00e1mad\u00e1shoz elegend\u0151, ha a PNG-k\u00e9phez egy olyan \u201eprofile\u201d param\u00e9tert adunk, amely tartalmazza a sz\u00fcks\u00e9ges f\u00e1jl\u00fatvonalat (p\u00e9ld\u00e1ul \u201e\/etc\/passwd\u201d), \u00e9s ennek az \u00e1tj\u00e1r\u00f3nak a feldolgoz\u00e1sa sor\u00e1n, p\u00e9ld\u00e1ul a k\u00e9p \u00e1tm\u00e9retez\u00e9s\u00e9n\u00e9l a kimeneti f\u00e1jlba beleker\u00fcl a sz\u00fcks\u00e9ges f\u00e1jl tartalma. Ha a f\u00e1jl neve helyett a \u201e-\u201d karaktert adjuk meg, akkor a feldolgoz\u00f3 a standard inputra v\u00e1rakozik, ami szolg\u00e1lhat szolg\u00e1ltat\u00e1smegakad\u00e1lyoz\u00e1s (CVE-2022-44267) v\u00e9grehajt\u00e1s\u00e1ra. <\/p>\n

A sebezhet\u0151s\u00e9g jav\u00edt\u00e1s\u00e1t c\u00e9lz\u00f3 friss\u00edt\u00e9s jelenleg m\u00e9g nem \u00e9rhet\u0151 el, de az ImageMagick fejleszt\u0151i a probl\u00e9ma ideiglenes megold\u00e1sak\u00e9nt aj\u00e1nlott\u00e1k, hogy a be\u00e1ll\u00edt\u00e1sokban olyan szab\u00e1lyt hozzanak l\u00e9tre, amely korl\u00e1tozza a hozz\u00e1f\u00e9r\u00e9st bizonyos f\u00e1jl\u00fatvonalakhoz. P\u00e9ld\u00e1ul az abszol\u00fat \u00e9s relat\u00edv \u00fatvonalakon val\u00f3 hozz\u00e1f\u00e9r\u00e9s megtilt\u00e1s\u00e1ra a policy.xml f\u00e1jlba a k\u00f6vetkez\u0151ket lehet hozz\u00e1adni: <policy domain=»path» rights=»none» pattern=»\\*» \/> <policy domain=»path» rights=»none» pattern=»..\\*» \/> <\/p>\n

M\u00e1r nyilv\u00e1nosan el\u00e9rhet\u0151 egy szkript, amely az sebezhet\u0151s\u00e9get kihaszn\u00e1l\u00f3 PNG-k\u00e9peket k\u00e9pes gener\u00e1lni.

\"Sebezhet\u0151s\u00e9g<\/center>
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u043f\u0430\u043a\u0435\u0442\u0435 ImageMagick, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0447\u0430\u0441\u0442\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f web-\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c\u0438 \u0434\u043b\u044f \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c CVE-2022-44268, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a \u0443\u0442\u0435\u0447\u043a\u0435 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0433\u043e \u0444\u0430\u0439\u043b\u043e\u0432 \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 ImageMagick \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0438\u043c PNG-\u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u0439. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0433\u0440\u043e\u0436\u0430\u0435\u0442 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043e\u0431\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u044e\u0442 \u0432\u043d\u0435\u0448\u043d\u0438\u0435 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0438 \u0437\u0430\u0442\u0435\u043c \u0434\u0430\u044e\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0437\u0430\u0433\u0440\u0443\u0437\u0438\u0442\u044c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u044f. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0442\u0435\u043c, \u0447\u0442\u043e \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 PNG-\u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f ImageMagick \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0441\u043e\u0434\u0435\u0440\u0436\u0438\u043c\u043e\u0435 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0430 «profile» […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":106653,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-106652","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\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\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Sebezhet\u0151s\u00e9g az ImageMagickben, amely helyi f\u00e1jlok tartalm\u00e1nak kisziv\u00e1rg\u00e1s\u00e1hoz vezet | ProHoster","description":"Az ImageMagick csomagban, amelyet gyakran haszn\u00e1lnak a webfejleszt\u0151k k\u00e9pek \u00e1talak\u00edt\u00e1s\u00e1ra, egy CVE-2022-44268 azonos\u00edt\u00f3j\u00fa sebezhet\u0151s\u00e9get fedeztek fel, amely f\u00e1jlok tartalm\u00e1nak 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\u043f\u0440\u0438.","og:url":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-imagemagick-privodyashhaya-k-utechke-soderzhimogo-lokalnyh-fajlov","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":"2023-02-06T16:48:12+00:00","article:modified_time":"2023-02-07T10:08:50+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\/106652","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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/comments?post=106652"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/posts\/106652\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media\/106653"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/media?parent=106652"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/categories?post=106652"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hu\/wp-json\/wp\/v2\/tags?post=106652"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}