{"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\/nl\/blog\/news\/uyazvimost-v-samba-pozvolyayushhaya-udalyonno-vypolnit-kod-na-servere","title":{"rendered":"Kwetsbaarheid in Samba waardoor remote code-executie op de server mogelijk is","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Corrigerende releases van het Samba-pakket 4.23.2, 4.22.5 en 4.21.9 zijn uitgebracht om de kwetsbaarheid (CVE-2025-10230) in de implementatie van de WINS-naam resolutie server op te lossen, die mogelijk ongevraagd code-executie op de server zonder authenticatie mogelijk maakt. Deze kwetsbaarheid heeft de hoogste ernstscore gekregen \u2014 10 uit 10.       <\/p>\n<p>De kwetsbaarheid wordt veroorzaakt door het ontbreken van een juiste verificatie van waarden die worden doorgegeven voor het starten van de applicatie vermeld in de parameter &#171;wins hook&#187;. Deze applicatie wordt gestart met het commando &#171;sh -c&#187; bij elke wijziging van de naam via WINS. Bij het gebruik van WINS in de controller <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/domain\/\"   title=\"domein\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4165\">domein<\/a> Active Directory, de NetBIOS-namen die als argumenten in de opdrachtregel bij het opstarten van de hook-applicatie worden doorgegeven, werden niet ontdaan van speciale tekens, wat het mogelijk maakte om willekeurige shell-opdrachten uit te voeren door een speciaal geformatteerde NetBIOS-naam in het verzoek aan de WINS-server op te nemen. cmd = talloc_asprintf(tmp_mem, &#171;%s %s %s x %ld&#187;, wins_hook_script, wins_hook_action_string(action), rec-&gt;name-&gt;name, rec-&gt;name-&gt;type, (long int) rec-&gt;expire_time); &#8230; execl(&#171;\\\/bin\\\/sh&#187;, &#171;sh&#187;, &#171;-c&#187;, cmd, NULL);      <\/p>\n<p>Een niet-geauthenticeerde client kan een registratiepakket naar de WINS-server sturen en om elke NetBIOS-naam vragen, zolang deze niet meer dan 15 tekens bevat. Schoonmaken van dergelijke karakters zoals &#8216;&lt;&#8216;, &#8216;&gt;&#8217; en &#8216;;&#8217; in de naam vindt niet plaats. Dus bij het starten van de hook-handler zal het doorgeven van een naam zoals &#171;name;id&gt;file&#187; leiden tot het uitvoeren van de &#171;id&#187; utility en het doorsturen van de output naar het bestand &#171;file&#187;.    <\/p>\n<p>De kwetsbaarheid komt voor op systemen waar in smb.conf de parameter &#8216;wins hook&#8217; is ingesteld bij gebruik van een domeincontroller met actieve <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/nl\/server\/dts-prohoster\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3112\">server<\/a> WINS (standaard uitgeschakeld en vereist dat de parameter &#171;wins support = yes&#187; wordt ingeschakeld). Bij het gebruik van een WINS-server op systemen zonder domeincontroller doet de kwetsbaarheid zich niet voor. De status van de nieuwe versie van het pakket of de beschikbaarheid van een patch in distributies kan worden gecontroleerd op de volgende pagina's: Debian, Ubuntu, Fedora, SUSE\/openSUSE, RHEL, Gentoo, Arch, FreeBSD, OpenBSD en NetBSD.              <\/p>\n<p>In de gepubliceerde versies van Samba is ook een minder ernstige kwetsbaarheid verholpen (CVE-2025-9640), die leidt tot het lekken van niet-ge\u00efnitieerde geheugen. Het probleem doet zich voor in de module vfs_streams_xattr bij geheugenallocatiefouten, die kunnen worden veroorzaakt door schrijfoperaties die lege gebieden in een bestand cre\u00ebren. De kwetsbaarheid kan worden misbruikt door een geauthenticeerde gebruiker.<br \/>\n<br \/>Bron: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64062\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\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 \u0441\u0435\u0440\u0432\u0435\u0440\u0435 \u0431\u0435\u0437 \u043f\u0440\u043e\u0445\u043e\u0436\u0434\u0435\u043d\u0438\u044f \u0430\u0443\u0442\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0435 \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d \u043d\u0430\u0438\u0432\u044b\u0441\u0448\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 &#8212; 10 \u0438\u0437 10. \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435\u043c \u0434\u043e\u043b\u0436\u043d\u043e\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439, \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0430\u0435\u043c\u044b\u0445 \u043f\u0435\u0440\u0435\u0434 \u0437\u0430\u043f\u0443\u0441\u043a\u043e\u043c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f, \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u043e\u0433\u043e \u0432 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u0435 &#171;wins hook&#187;. \u0414\u0430\u043d\u043d\u043e\u0435 [&hellip;]<\/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<!-- All in One SEO 5.0.3 - aioseo.com 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