{"id":145323,"date":"2025-10-16T17:11:54","date_gmt":"2025-10-16T15:11:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-samba-pozvolyayushhaya-udalyonno-vypolnit-kod-na-servere"},"modified":"2025-10-16T17:11:54","modified_gmt":"2025-10-16T15:11:54","slug":"uyazvimost-v-samba-pozvolyayushhaya-udalyonno-vypolnit-kod-na-servere","status":"publish","type":"post","link":"https:\/\/prohoster.info\/en\/blog\/news\/uyazvimost-v-samba-pozvolyayushhaya-udalyonno-vypolnit-kod-na-servere","title":{"rendered":"A vulnerability in Samba allows remote code execution on the server","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Corrective releases of Samba package 4.23.2, 4.22.5, and 4.21.9 have been published, addressing a vulnerability (CVE-2025-10230) in the implementation of the WINS name resolution server, allowing remote code execution on the server without authentication. This issue has been assigned the highest severity level \u2014 10 out of 10. <\/p>\n

The vulnerability is caused by the lack of proper validation of values passed before launching the application specified in the 'wins hook' parameter. This application is executed via the 'sh -c' command each time a name is changed through WINS. When using WINS in the Active Directory controller, NetBIOS names passed as command-line arguments during the launch of the hook application were not sanitized of special characters, allowing arbitrary shell commands to be executed by specifying a specially crafted NetBIOS name in the request to the WINS server. cmd = talloc_asprintf(tmp_mem, '%s %s %s x %ld', wins_hook_script, wins_hook_action_string(action), rec->name->name, rec->name->type, (long int) rec->expire_time); ... execl('\/bin\/sh', 'sh', '-c', cmd, NULL); domain<\/a> An unauthenticated client can send a registration packet to the WINS server and request any NetBIOS name not exceeding 15 characters. Characters such as '<', '>', and ';' are not sanitized in the name. Consequently, when the hook handler is invoked, passing a name like 'name;id>file' will lead to the execution of the 'id' utility and direct its output to the file 'file'. <\/p>\n

The vulnerability manifests on systems where the 'wins hook' parameter is set in smb.conf when using a domain controller with active WINS support (disabled by default and requires enabling the parameter 'wins support = yes'). When using a WINS server in systems without a domain controller, the vulnerability does not manifest. You can check the status of the new package version or the preparation of a fix in the distributions on the following pages: Debian, Ubuntu, Fedora, SUSE\/openSUSE, RHEL, Gentoo, Arch, FreeBSD, OpenBSD, and NetBSD. <\/p>\n

WINS (disabled by default and requires enabling the parameter 'wins support = yes'). When using a WINS server in systems without a domain controller, the vulnerability does not manifest. You can check the status of the new package version or the preparation of a fix in the distributions on the following pages: Debian, Ubuntu, Fedora, SUSE\/openSUSE, RHEL, Gentoo, Arch, FreeBSD, OpenBSD, and NetBSD. proxy server<\/a> The vulnerability is present on systems configured with the 'wins hook' parameter in smb.conf when using a domain controller with active WINS support. <\/p>\n

The published releases of Samba also addressed a less critical vulnerability (CVE-2025-9640) that leads to the leakage of uninitialized memory. The issue occurs in the vfs_streams_xattr module during memory allocation failures, which can be triggered by performing write operations that create empty areas in the file. This vulnerability can be exploited by an authenticated user.
\n
Source: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0433\u043e \u0432 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0435 «wins hook». \u0414\u0430\u043d\u043d\u043e\u0435 […]<\/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-145323","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\udd47Vulnerability in Samba allowing remote code execution on the server | ProHoster","description":"Corrective releases for Samba package versions 4.23.2, 4.22.5, and 4.21.9 have been published, fixing the vulnerability (CVE-2025-10230) in the WINS name 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\u0441\u0435\u0440\u0432\u0435\u0440\u0435 | ProHoster","og:description":"\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 Samba 4.23.2, 4.22.5 \u0438 4.21.9 \u0441 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0435\u043c \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 (CVE-2025-10230) \u0432 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0441\u0435\u0440\u0432\u0435\u0440\u0430 \u0440\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u044f \u0438\u043c\u0451\u043d WINS, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u0434\u043e\u0431\u0438\u0442\u044c\u0441\u044f \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0441\u0432\u043e\u0435\u0433\u043e \u043a\u043e\u0434\u0430 \u043d\u0430.","og:url":"https:\/\/prohoster.info\/en\/blog\/news\/uyazvimost-v-samba-pozvolyayushhaya-udalyonno-vypolnit-kod-na-servere","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":"2025-10-16T15:11:54+00:00","article:modified_time":"2025-10-16T15:11:54+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"145323","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":"2026-03-05 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