{"id":1564,"date":"2025-07-24T12:30:14","date_gmt":"2025-07-24T10:30:14","guid":{"rendered":"https:\/\/www.jadeconsulting.eu\/?p=1564"},"modified":"2025-07-24T16:30:10","modified_gmt":"2025-07-24T14:30:10","slug":"kritikus-sharepoint-sebezhetoseg-tobb-tucat-szervezet-mar-aldozatul-esett-cve-2025-53770","status":"publish","type":"post","link":"https:\/\/www.jadeconsulting.eu\/index.php\/2025\/07\/24\/kritikus-sharepoint-sebezhetoseg-tobb-tucat-szervezet-mar-aldozatul-esett-cve-2025-53770\/","title":{"rendered":"&#x1f512; Kritikus SharePoint sebezhet\u0151s\u00e9g: t\u00f6bb tucat szervezet m\u00e1r \u00e1ldozatul esett (CVE-2025-53770)"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\">Mi t\u00f6rt\u00e9nt?<\/h3>\n\n\n\n<p>2025 j\u00falius\u00e1ban a Microsoft egy s\u00falyos, nulladik napi (zero-day) sebezhet\u0151s\u00e9get azonos\u00edtott a SharePoint Server rendszereiben, amelyet akt\u00edvan kihaszn\u00e1lnak kiberb\u0171n\u00f6z\u0151k \u2013 t\u00f6bbek k\u00f6z\u00f6tt \u00e1llamilag t\u00e1mogatott k\u00ednai hackercsoportok is. A CVE-2025-53770 k\u00f3d alatt nyilv\u00e1ntartott hiba lehet\u0151v\u00e9 teszi, hogy a t\u00e1mad\u00f3k teljes jogosults\u00e1ggal f\u00e9rjenek hozz\u00e1 a rendszerekhez an\u00e9lk\u00fcl, hogy b\u00e1rmif\u00e9le hiteles\u00edt\u00e9sre lenne sz\u00fcks\u00e9g.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&#x2757;Mi\u00e9rt vesz\u00e9lyes?<\/h3>\n\n\n\n<p>A sebezhet\u0151s\u00e9g lehet\u0151v\u00e9 teszi:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Autentik\u00e1ci\u00f3 n\u00e9lk\u00fcli t\u00e1voli k\u00f3dfuttat\u00e1st (RCE)<\/strong><\/li>\n\n\n\n<li><strong>A szerverek kulcsainak megszerz\u00e9s\u00e9t<\/strong> (MachineKey, __VIEWSTATE manipul\u00e1ci\u00f3)<\/li>\n\n\n\n<li><strong>Tart\u00f3s hozz\u00e1f\u00e9r\u00e9st \u00e9s later\u00e1lis mozg\u00e1st<\/strong> a szervezet rendszerei k\u00f6z\u00f6tt<\/li>\n<\/ul>\n\n\n\n<p>Ez azt jelenti, hogy a t\u00e1mad\u00f3 nemcsak bel\u00e9phet a rendszerbe, hanem onnan kiindulva <strong>tov\u00e1bbi bels\u0151 rendszereket is el\u00e9rhet<\/strong>, sokszor \u00fagy, hogy az \u00e1lc\u00e1z\u00e1s miatt <strong>\u00e9szre sem veszik azonnal a jelenl\u00e9t\u00e9t<\/strong>.<\/p>\n\n\n\n<p>A t\u00e1mad\u00f3k olyan m\u00e9ly hozz\u00e1f\u00e9r\u00e9st szerezhetnek, amely lehet\u0151v\u00e9 teszi sz\u00e1mukra, hogy <strong>hosszabb ideig \u00e9szrev\u00e9tlen\u00fcl maradjanak<\/strong>, bizalmas adatokat gy\u0171jtsenek, vagy ak\u00e1r a rendszer m\u0171k\u00f6d\u00e9s\u00e9t m\u00f3dos\u00edts\u00e1k. R\u00e1ad\u00e1sul a megszerzett kulcsokkal a t\u00e1mad\u00f3 <strong>tov\u00e1bbi t\u00e1mad\u00e1sokat is k\u00e9pes v\u00e9grehajtani<\/strong>, ak\u00e1r a friss\u00edt\u00e9sek telep\u00edt\u00e9se ut\u00e1n is \u2013 ha az \u00e9rintett kulcsokat nem cser\u00e9lik le id\u0151ben.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Kik \u00e1llnak a t\u00e1mad\u00e1sok m\u00f6g\u00f6tt?<\/h4>\n\n\n\n<p>A Microsoft szerint legal\u00e1bb h\u00e1rom k\u00ednai \u00e1llami h\u00e1tt\u00e9rrel rendelkez\u0151 csoport \u2013 Linen Typhoon, Violet Typhoon \u00e9s Storm-2603 \u2013 haszn\u00e1lja akt\u00edvan a s\u00e9r\u00fcl\u00e9kenys\u00e9get c\u00e9lzott kiberk\u00e9mked\u00e9si m\u0171veletekhez. Az \u00e1ldozatok k\u00f6z\u00f6tt \u00e1llami int\u00e9zm\u00e9nyek, nemzetk\u00f6zi v\u00e1llalatok \u00e9s \u00e9rz\u00e9keny adatokat kezel\u0151 szervezetek is megtal\u00e1lhat\u00f3k.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">&#x1f465;Kit \u00e9rint?<\/h3>\n\n\n\n<p>A most felfedezett sebezhet\u0151s\u00e9g nem minden SharePoint-felhaszn\u00e1l\u00f3t \u00e9rint, de azok sz\u00e1m\u00e1ra, akik a Microsoft SharePoint rendszert <strong>saj\u00e1t szerveren<\/strong>, azaz <strong>helyben (on-premise)<\/strong> futtatj\u00e1k, komoly kock\u00e1zatot jelent. N\u00e9zz\u00fck r\u00e9szletesebben:<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>\u00c9rintett rendszerek<\/strong>:<\/h5>\n\n\n\n<p>A sebezhet\u0151s\u00e9g a SharePoint Server 2016, 2019, \u00e9s Subscription Edition verzi\u00f3it \u00e9rinti, amennyiben azok <strong>nem kapt\u00e1k meg id\u0151ben a legfrissebb biztons\u00e1gi friss\u00edt\u00e9seket<\/strong>.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Nem \u00e9rintett<\/strong>:<\/h5>\n\n\n\n<p>A Microsoft 365 r\u00e9szek\u00e9nt el\u00e9rhet\u0151 <strong>SharePoint Online<\/strong> \u2013 a felh\u0151alap\u00fa v\u00e1ltozat \u2013 biztons\u00e1gban van, mivel ott a friss\u00edt\u00e9seket automatikusan kezeli a Microsoft.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>A legnagyobb vesz\u00e9lyben azok a szervezetek vannak<\/strong>, ahol:<\/h5>\n\n\n\n<ul class=\"wp-block-list\">\n<li>r\u00e9gebbi SharePoint verzi\u00f3 fut egy bels\u0151 vagy k\u00fcls\u0151 (internetre is nyitott) szerveren,<\/li>\n\n\n\n<li>a rendszert ritk\u00e1n friss\u00edtik, vagy nem naprak\u00e9szen karbantartott,<\/li>\n\n\n\n<li>nincs megfelel\u0151 biztons\u00e1gi ment\u00e9s, t\u0171zfal, illetve v\u00edrus- \u00e9s behatol\u00e1sv\u00e9delmi megold\u00e1s akt\u00edvan haszn\u00e1latban,<\/li>\n\n\n\n<li>nem vil\u00e1gos, hogy pontosan ki felel a szerverek informatikai karbantart\u00e1s\u00e1\u00e9rt.<\/li>\n<\/ul>\n\n\n\n<h5 class=\"wp-block-heading\"><strong>Kik az \u00e9rintettek ipar\u00e1g szerint?<\/strong><\/h5>\n\n\n\n<p>B\u00e1r a t\u00e1mad\u00e1sok sokszor korm\u00e1nyzati szervezeteket c\u00e9loznak, az <strong>\u00fczleti szektor sincs biztons\u00e1gban<\/strong>. \u00c9rintettek lehetnek:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>p\u00e9nz\u00fcgyi c\u00e9gek,<\/li>\n\n\n\n<li>gy\u00e1rt\u00f3v\u00e1llalatok,<\/li>\n\n\n\n<li>oktat\u00e1si int\u00e9zm\u00e9nyek,<\/li>\n\n\n\n<li>jogi \u00e9s tan\u00e1csad\u00f3 irod\u00e1k,<\/li>\n\n\n\n<li>nonprofit szervezetek,<\/li>\n\n\n\n<li>b\u00e1rmely c\u00e9g, amely SharePoint-ot haszn\u00e1l bels\u0151 dokumentumkezel\u00e9sre.<\/li>\n<\/ul>\n\n\n\n<p><strong>Ha a c\u00e9ged saj\u00e1t SharePoint szervert haszn\u00e1l, \u00e9s nem vagy biztos benne, hogy minden v\u00e9delmi l\u00e9p\u00e9s meg lett t\u00e9ve<\/strong>, akkor \u00e9rdemes mihamarabb konzult\u00e1lni szak\u00e9rt\u0151vel \u2013 a t\u00e1mad\u00f3k jelenleg is akt\u00edvan keresik a nyitott kapukat.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Mit lehet tenni?<\/h4>\n\n\n\n<p>A Microsoft m\u00e1r kiadta a biztons\u00e1gi friss\u00edt\u00e9seket, de ezek csak akkor hat\u00e1sosak, ha:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Telep\u00edt\u00e9sre ker\u00fcltek az \u00e9rintett rendszerekre<\/strong><\/li>\n\n\n\n<li><strong>Forgalomb\u00f3l kivont\u00e1k az internetre k\u00f6zvetlen\u00fcl csatlakoz\u00f3 p\u00e9ld\u00e1nyokat<\/strong> (ha nincs AMSI integr\u00e1ci\u00f3)<\/li>\n\n\n\n<li><strong>Rot\u00e1lt\u00e1k a kompromitt\u00e1l\u00f3dott kulcsokat<\/strong>, hogy a t\u00e1mad\u00f3k ne tudjanak visszat\u00e9rni<\/li>\n<\/ul>\n\n\n\n<p>A CISA (U.S. Cybersecurity and Infrastructure Security Agency) is kiadott egy k\u00fcl\u00f6n riaszt\u00e1st, kiemelve a sebezhet\u0151s\u00e9g s\u00falyoss\u00e1g\u00e1t \u00e9s az azonnali int\u00e9zked\u00e9s sz\u00fcks\u00e9gess\u00e9g\u00e9t.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">&#x1f6e1;&#xfe0f;Mit tanulhatunk ebb\u0151l?<\/h3>\n\n\n\n<p>Ez az eset \u00fajra r\u00e1vil\u00e1g\u00edt arra, hogy:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A helyben fut\u00f3 rendszerek biztons\u00e1gi kitetts\u00e9ge sokkal nagyobb, mint a j\u00f3l karbantartott felh\u0151s szolg\u00e1ltat\u00e1sok\u00e9<\/li>\n\n\n\n<li>Az automatiz\u00e1lt v\u00e9delem (pl. Defender for Endpoint, AMSI integr\u00e1ci\u00f3) \u00e9s az akt\u00edv monitoroz\u00e1s kulcsfontoss\u00e1g\u00fa<\/li>\n\n\n\n<li>A friss\u00edt\u00e9sek k\u00e9sleked\u00e9se <strong>kritikus \u00fczleti kock\u00e1zatt\u00e1 v\u00e1lhat<\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">&#x1f4a1;Mi hogyan tudunk seg\u00edteni?<\/h2>\n\n\n\n<p>C\u00e9g\u00fcnk kiemelt szak\u00e9rtelemmel rendelkezik Microsoft-\u00f6kosziszt\u00e9m\u00e1ban:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>SharePoint<\/strong>: \u00fczemeltet\u00e9s, biztons\u00e1gi audit, rendszerfriss\u00edt\u00e9sek<\/li>\n\n\n\n<li><strong>Microsoft 365<\/strong>: \u00e1tfog\u00f3 v\u00e9delem, felh\u0151re val\u00f3 migr\u00e1ci\u00f3<\/li>\n\n\n\n<li><strong>Inform\u00e1ci\u00f3biztons\u00e1gi tan\u00e1csad\u00e1s<\/strong>: compliance, kock\u00e1zatelemz\u00e9s, IT audit<\/li>\n<\/ul>\n\n\n\n<p>Ha SharePoint-ot haszn\u00e1ltok helyben telep\u00edtve (on-premise), \u00e9s nem vagytok biztosak abban, hogy minden v\u00e9delem \u00e9rv\u00e9nyes\u00fclt-e \u2013 <strong>keressetek minket bizalommal<\/strong>. Egy gyors audit sor\u00e1n meg tudjuk n\u00e9zni, van-e tov\u00e1bbi teend\u0151, \u00e9s seg\u00edt\u00fcnk a teljes v\u00e9delem kialak\u00edt\u00e1s\u00e1ban.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50\"><a class=\"wp-block-button__link wp-element-button\">Kapcsolatfelv\u00e9tel<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Mi t\u00f6rt\u00e9nt? 2025 j\u00falius\u00e1ban a Microsoft egy s\u00falyos, nulladik napi (zero-day) sebezhet\u0151s\u00e9get azonos\u00edtott a SharePoint Server rendszereiben, amelyet akt\u00edvan kihaszn\u00e1lnak kiberb\u0171n\u00f6z\u0151k \u2013 t\u00f6bbek k\u00f6z\u00f6tt \u00e1llamilag t\u00e1mogatott k\u00ednai hackercsoportok is. A CVE-2025-53770 k\u00f3d alatt nyilv\u00e1ntartott hiba lehet\u0151v\u00e9 teszi, hogy a t\u00e1mad\u00f3k teljes jogosults\u00e1ggal f\u00e9rjenek hozz\u00e1 a rendszerekhez an\u00e9lk\u00fcl, hogy b\u00e1rmif\u00e9le hiteles\u00edt\u00e9sre lenne sz\u00fcks\u00e9g. &#x2757;Mi\u00e9rt vesz\u00e9lyes? A&#8230;<\/p>\n","protected":false},"author":162,"featured_media":1571,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[82],"tags":[86,84,83,87],"class_list":["post-1564","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-it-biztonsag","tag-exploit","tag-microsoft","tag-sharepoint","tag-update"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>&#x1f512; Kritikus SharePoint sebezhet\u0151s\u00e9g: t\u00f6bb tucat szervezet m\u00e1r \u00e1ldozatul esett (CVE-2025-53770) - JADE Tan\u00e1csad\u00f3 \u00e9s Szolg\u00e1ltat\u00f3 Kft. hivatalos weboldala<\/title>\n<meta name=\"description\" content=\"Friss kritikus sebezhet\u0151s\u00e9g \u00e9rinti a SharePoint szervereket (CVE-2025-53770), amelyet akt\u00edvan ki is haszn\u00e1lnak t\u00e1mad\u00f3k. 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