{"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\/ro\/blog\/news\/uyazvimost-v-libksba-privodyashhaya-k-vypolneniyu-koda-pri-obrabotke-s-mime-v-gnupg","title":{"rendered":"Vulnerabilitate \u00een LibKSBA, care duce la executarea de cod la procesarea S\/MIME \u00een GnuPG","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00cen biblioteca LibKSBA, dezvoltat\u0103 de proiectul GnuPG \u0219i oferind func\u021bii pentru gestionarea certificatelor X.509, a fost descoperit\u0103 o vulnerabilitate critic\u0103 (CVE-2022-3515) care duce la o dep\u0103\u0219ire a capacit\u0103\u021bii de stocare \u0219i la scrierea de date arbitrare \u00een afara buffer-ului alocat \u00een procesul de analizare a structurilor ASN.1 folosite \u00een S\/MIME, X.509 \u0219i CMS. Problema este agravat\u0103 de faptul c\u0103 biblioteca Libksba este utilizat\u0103 \u00een pachetul GnuPG, iar vulnerabilitatea ar putea conduce la executarea de cod de la distan\u021b\u0103 al atacatorului \u00een cadrul GnuPG (gpgsm) atunci c\u00e2nd se proceseaz\u0103 date criptate sau semnate din fi\u0219iere sau mesaje de e-mail care utilizeaz\u0103 S\/MIME. \u00cen cel mai simplu caz, pentru a ataca o victim\u0103 care folose\u0219te un client de e-mail compatibil cu GnuPG \u0219i S\/MIME, este suficient s\u0103 se trimit\u0103 un mesaj special formatat. <\/p>\n

Vulnerabilitatea poate fi, de asemenea, utilizat\u0103 pentru a ataca serverele dirmngr care se ocup\u0103 cu desc\u0103rcarea \u0219i analizarea listelor de certificare revocate (CRLs) \u0219i cu verificarea certificatelor utilizate \u00een TLS. Atacul asupra dirmngr poate fi realizat de la servere web<\/a>, controlat de atacator, prin furnizarea de CRL-uri sau certificate special formulate. Se observ\u0103 c\u0103, p\u00e2n\u0103 \u00een prezent, nu au fost descoperite exploat\u0103ri publice pentru gpgsm \u0219i dirmngr, \u00eens\u0103 vulnerabilitatea este tipic\u0103 \u0219i nimic nu opre\u0219te atacatorii califica\u021bi s\u0103 conceap\u0103 un exploit pe cont propriu. <\/p>\n

Vulnerabilitatea a fost remediat\u0103 \u00een versiunea Libksba 1.6.2 \u0219i \u00een pachetele binare GnuPG 2.3.8. \u00cen distribu\u021biile Linux, biblioteca Libksba este de obicei livrat\u0103 ca o dependen\u021b\u0103 separat\u0103, iar \u00een pachetele pentru Windows este integrat\u0103 \u00een pachetul principal de instalare GnuPG. Dup\u0103 actualizare, nu uita\u021bi s\u0103 reporni\u021bi procesele de fundal cu comanda «gpgconf —kill all». Pentru a verifica prezen\u021ba problemei, \u00een rezultatul comenzii «gpgconf —show-versions», pute\u021bi evalua valoarea \u0219irului «KSBA ….», \u00een care ar trebui s\u0103 fie specificat\u0103 o versiune de cel pu\u021bin 1.6.2. <\/p>\n

Actualiz\u0103rile pentru distribu\u021bii nu au fost deocamdat\u0103 lansate, dar le pute\u021bi urm\u0103ri pe paginile: Debian, Ubuntu, Gentoo, RHEL, SUSE, Arch, FreeBSD. Vulnerabilitatea este, de asemenea, prezent\u0103 \u00een pachetele MSI \u0219i AppImage cu GnuPG VS-Desktop \u0219i \u00een Gpg4win.
\n
Sursa: opennet.ro<\/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\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\udd47Vulnerabilitatea din LibKSBA care duce la executarea de cod \u00een timpul proces\u0103rii S\/MIME \u00een GnuPG | ProHoster","description":"\u00cen biblioteca LibKSBA, dezvoltat\u0103 de proiectul GnuPG \u0219i oferind func\u021bii pentru gestionarea certificatelor X.509, a fost descoperit\u0103 o vulnerabilitate critic\u0103 (CVE-2022-3515) care duce la o dep\u0103\u0219ire a capacit\u0103\u021bii de stocare \u0219i 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\u0437\u0430\u043f\u0438\u0441\u0438.","og:url":"https:\/\/prohoster.info\/ro\/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 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