{"id":115207,"date":"2024-04-21T02:30:03","date_gmt":"2024-04-21T00:30:03","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-glibc-ekspluatiruemaya-cherez-skripty-na-php"},"modified":"2024-04-21T02:30:03","modified_gmt":"2024-04-21T00:30:03","slug":"uyazvimost-v-glibc-ekspluatiruemaya-cherez-skripty-na-php","status":"publish","type":"post","link":"https:\/\/prohoster.info\/no\/blog\/news\/uyazvimost-v-glibc-ekspluatiruemaya-cherez-skripty-na-php","title":{"rendered":"S\u00e5rbarhet i Glibc, utnyttet gjennom PHP-skript","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Det er avdekket en s\u00e5rbarhet i den standard C-biblioteket Glibc (CVE-2024-2961) som f\u00f8rer til bufferoverskridelse ved konvertering av spesielt formatert tekst p\u00e5 ISO-2022-CN-EXT-koding ved hjelp av iconv()-funksjonen. Forskeren som oppdaget problemet planlegger \u00e5 presentere det p\u00e5 konferansen OffensiveCon den 10. mai, i en kunngj\u00f8ring der det nevnes muligheten for utnyttelse av s\u00e5rbarheten gjennom PHP-applikasjoner. Det er hevdet at problemet p\u00e5virker hele PHP-\u00f8kosystemet og noen applikasjoner. <\/p>\n

Ved konvertering av strenger til UCS4-koding, i samsvar med kravene i RFC 1922, legger biblioteket til noen escape-tegn som markerer deler av strengen hvor kodingen ble endret. S\u00e5rbarheten skyldes feilaktig grensekontroll av interne buffere i funksjonen iconv(), noe som kan f\u00f8re til bufferoverl\u00f8p p\u00e5 opptil 4 byte. Under bufferoverl\u00f8pet kan bestemte faste verdier som ‘$+I’, ‘$+J’, ‘$+K’, ‘$+L’, ‘$+M’ og ‘$*H’ bli skrevet utenfor bufferen. Selv om utnyttelse av en slik s\u00e5rbarhet for \u00e5 kj\u00f8re kode virker lite sannsynlig, har forskeren som oppdaget problemet uttalt at dette var tilstrekkelig til \u00e5 lage flere prototyper av exploits for fjernangrep p\u00e5 PHP-applikasjoner, noe som f\u00f8rte til kj\u00f8ring av kode. <\/p>\n

S\u00e5rbarheten har v\u00e6rt til stede siden \u00e5r 2000 og er rettet i utviklingsgrenen av Glibc 2.40. En fiks er ogs\u00e5 tilgjengelig i form av patcher for utgivelser av Glibc fra 2.32 til 2.39. For distribusjoner kan du f\u00f8lge opprettingen av s\u00e5rbarheten p\u00e5 sidene: Debian, Ubuntu, Gentoo, RHEL, SUSE, Fedora, Arch.
\n
Kilde: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0439 \u0421\u0438-\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 Glibc \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-2961), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0431\u0443\u0444\u0435\u0440\u0430 \u043f\u0440\u0438 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0441\u0442\u0440\u043e\u043a \u0432 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u043a\u0435 ISO-2022-CN-EXT \u0444\u0443\u043d\u043a\u0446\u0438\u0435\u0439 iconv(). \u0412\u044b\u044f\u0432\u0438\u0432\u0448\u0438\u0439 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u043f\u043b\u0430\u043d\u0438\u0440\u0443\u0435\u0442 10 \u043c\u0430\u044f \u0432\u044b\u0441\u0442\u0443\u043f\u0438\u0442\u044c \u043d\u0430 \u043a\u043e\u043d\u0444\u0435\u0440\u0435\u043d\u0446\u0438\u0438 OffensiveCon \u0441 \u0434\u043e\u043a\u043b\u0430\u0434\u043e\u043c, \u0432 \u0430\u043d\u043e\u043d\u0441\u0435 \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u0443\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442\u0441\u044f \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u0447\u0435\u0440\u0435\u0437 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 PHP. \u0417\u0430\u044f\u0432\u043b\u0435\u043d\u043e, \u0447\u0442\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u0432\u0441\u044e \u044d\u043a\u043e\u0441\u0438\u0441\u0442\u0435\u043c\u0443 PHP \u0438 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f. […]<\/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-115207","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\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\udd47S\u00e5rbarhet i Glibc, utnyttet gjennom PHP-scripts | ProHoster","description":"Det er avdekket en s\u00e5rbarhet i den standard C-biblioteket Glibc (CVE-2024-2961) som f\u00f8rer til bufferoverskridelse ved konvertering av spesielt formatert tekst p\u00e5 ISO-2022-CN-EXT-koding ved hjelp av iconv()-funksjonen.","canonical_url":"https:\/\/prohoster.info\/no\/blog\/news\/uyazvimost-v-glibc-ekspluatiruemaya-cherez-skripty-na-php","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"nn_NO","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\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432 Glibc, \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u043c\u0430\u044f \u0447\u0435\u0440\u0435\u0437 \u0441\u043a\u0440\u0438\u043f\u0442\u044b \u043d\u0430 PHP | ProHoster","og:description":"\u0412 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0439 \u0421\u0438-\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 Glibc \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-2961), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0431\u0443\u0444\u0435\u0440\u0430 \u043f\u0440\u0438 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0441\u0442\u0440\u043e\u043a \u0432 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u043a\u0435 ISO-2022-CN-EXT \u0444\u0443\u043d\u043a\u0446\u0438\u0435\u0439 iconv().","og:url":"https:\/\/prohoster.info\/no\/blog\/news\/uyazvimost-v-glibc-ekspluatiruemaya-cherez-skripty-na-php","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":"2024-04-21T00:30:03+00:00","article:modified_time":"2024-04-21T00:30:03+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"115207","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":"2026-01-22 22:47:20","breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-01-22 22:47:20","updated":"2026-01-22 22:47:20","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/no\/wp-json\/wp\/v2\/posts\/115207","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/no\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/no\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/no\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/no\/wp-json\/wp\/v2\/comments?post=115207"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/no\/wp-json\/wp\/v2\/posts\/115207\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/no\/wp-json\/wp\/v2\/media?parent=115207"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/no\/wp-json\/wp\/v2\/categories?post=115207"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/no\/wp-json\/wp\/v2\/tags?post=115207"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}