{"id":105318,"date":"2022-10-17T21:36:42","date_gmt":"2022-10-17T19:36:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-libksba-privodyashhaya-k-vypolneniyu-koda-pri-obrabotke-s-mime-v-gnupg"},"modified":"2022-10-17T21:36:42","modified_gmt":"2022-10-17T19:36:42","slug":"uyazvimost-v-libksba-privodyashhaya-k-vypolneniyu-koda-pri-obrabotke-s-mime-v-gnupg","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/uyazvimost-v-libksba-privodyashhaya-k-vypolneniyu-koda-pri-obrabotke-s-mime-v-gnupg","title":{"rendered":"Ranljivost u LibKSBA koja dovodi do izvr\u0161avanja koda pri obradi S\/MIME u GnuPG-u","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

U biblioteci LibKSBA, koju razvija projekt GnuPG i koja pru\u017ea funkcije za rad s X.509 certifikatima, otkrivena je kriti\u010dna ranjivost (CVE-2022-3515) koja dovodi do cijelobrojnog preljeva i pisanja proizvoljnih podataka izvan dodijeljene memorijske zone prilikom obrade ASN.1 struktura kori\u0161tenih u S\/MIME, X.509 i CMS. Problem se dodatno pogor\u0161ava jer se biblioteka Libksba koristi u paketu GnuPG, a ranjivost mo\u017ee dovesti do daljinskog izvr\u0161avanja koda napada\u010da prilikom obrade GnuPG (gpgsm) enkriptiranih ili potpisanih podataka iz datoteka ili e-po\u0161te koja koristi S\/MIME. U najjednostavnijem slu\u010daju, za napad na \u017ertvu koja koristi e-po\u0161tanskog klijenta s podr\u0161kom za GnuPG i S\/MIME, dovoljno je poslati posebno oblikovano pismo. <\/p>\n

Ranjivost se tako\u0111er mo\u017ee iskoristiti za napad na dirmngr poslu\u017eitelje koji se bave preuzimanjem i obradom popisa opozvanih certifikata (CRL) i verifikacijom certifikata kori\u0161tenih u TLS-u. Napad na dirmngr mo\u017ee se izvr\u0161iti s web-poslu\u017eitelja<\/a>, pod kontrolom napada\u010da, putem slanja posebno oblikovanih CRL-ova ili certifikata. Napominje se da trenutno ne postoje javno dostupni eksploiti za gpgsm i dirmngr, ali ranjivost je tipi\u010dna i ni\u0161ta ne sprje\u010dava kvalificirane napada\u010de da sami pripreme eksploit. <\/p>\n

Ranjenje je otklonjeno u izdanju Libksba 1.6.2 i u binarnim gradnjama GnuPG 2.3.8. U Linux distribucijama, biblioteka Libksba se obi\u010dno isporu\u010duje kao zasebna zavisnost, dok je u Windows gradnjama integrirana u glavni instalacijski paket sa GnuPG-om. Nakon a\u017euriranja, ne zaboravite ponovo pokrenuti pozadinske procese komandnom «gpgconf —kill all». Da biste proverili prisutnost problema, mo\u017eete proceniti vrednost niza «KSBA ….» u izlazu komande «gpgconf —show-versions», gde bi trebalo biti navedeno da verzija nije ni\u017ea od 1.6.2. <\/p>\n

A\u017euriranja za distribucije jo\u0161 nisu objavljena, ali njihovo pojavljivanje mo\u017eete pratiti na stranicama: Debian, Ubuntu, Gentoo, RHEL, SUSE, Arch, FreeBSD. Ranjivost je tako\u0111er prisutna u MSI i AppImage paketima s GnuPG VS-Desktop i u Gpg4win.
\n
Izvor: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 LibKSBA, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c GnuPG \u0438 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u0430\u043c\u0438 X.509, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-3515), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u043c\u0443 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0438 \u0437\u0430\u043f\u0438\u0441\u0438 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0437\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u044b \u0432\u044b\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0431\u0443\u0444\u0435\u0440\u0430 \u043f\u0440\u0438 \u0440\u0430\u0437\u0431\u043e\u0440\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440 ASN.1, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0445 \u0432 S\/MIME, X.509 \u0438 CMS. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0443\u0441\u0443\u0433\u0443\u0431\u043b\u044f\u0435\u0442\u0441\u044f \u0442\u0435\u043c, \u0447\u0442\u043e \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 Libksba \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0432 \u043f\u0430\u043a\u0435\u0442\u0435 GnuPG \u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043c\u043e\u0436\u0435\u0442 \u043f\u0440\u0438\u0432\u0435\u0441\u0442\u0438 \u043a […]<\/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-105318","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\udd47Ranjivost u LibKSBA koja dovodi do izvr\u0161avanja koda prilikom obrade S\/MIME u GnuPG | ProHoster","description":"U biblioteci LibKSBA, koju razvija projekt GnuPG i koja pru\u017ea funkcije za rad s X.509 certifikatima, otkrivena je kriti\u010dna ranjivost (CVE-2022-3515) koja dovodi do cijelobrojnog preljeva i pisanja.","canonical_url":"https:\/\/prohoster.info\/hr\/blog\/news\/uyazvimost-v-libksba-privodyashhaya-k-vypolneniyu-koda-pri-obrabotke-s-mime-v-gnupg","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"hr_HR","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 LibKSBA, \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u043a\u043e\u0434\u0430 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 S\/MIME \u0432 GnuPG | ProHoster","og:description":"\u0412 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 LibKSBA, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c GnuPG \u0438 \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u0441\u0435\u0440\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u0430\u043c\u0438 X.509, \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-3515), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u0446\u0435\u043b\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u043e\u043c\u0443 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0438 \u0437\u0430\u043f\u0438\u0441\u0438.","og:url":"https:\/\/prohoster.info\/hr\/blog\/news\/uyazvimost-v-libksba-privodyashhaya-k-vypolneniyu-koda-pri-obrabotke-s-mime-v-gnupg","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":"2022-10-17T19:36:42+00:00","article:modified_time":"2022-10-17T19:36:42+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"105318","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":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-02-08 20:31:51","updated":"2026-02-08 20:31:51","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/105318","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/comments?post=105318"}],"version-history":[{"count":1,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/105318\/revisions"}],"predecessor-version":[{"id":157955,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/posts\/105318\/revisions\/157955"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/media?parent=105318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/categories?post=105318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/hr\/wp-json\/wp\/v2\/tags?post=105318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}