{"id":183943,"date":"2026-10-22T05:40:56","date_gmt":"2026-10-22T03:40:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/news\/raskryty-detali-kriticheskih-uyazvimostej-v-php-i-opublikovany-korrektiruyushhie-obnovleniya"},"modified":"2026-10-22T05:41:02","modified_gmt":"2026-10-22T03:41:02","slug":"details-of-critical-php-vulnerabilities-disclosed-and-security-updates-released","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/details-of-critical-php-vulnerabilities-disclosed-and-security-updates-released","title":{"rendered":"Felt\u00e1rt\u00e1k a PHP kritikus sebezhet\u0151s\u00e9geit, \u00e9s k\u00f6zz\u00e9tett\u00e9k a jav\u00edt\u00f3friss\u00edt\u00e9seket.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Megjelent a PHP 8.5.12, 8.4.27, 8.3.36 \u00e9s 8.2.35 kijav\u00edt\u00f3 kiad\u00e1sa, valamint jav\u00edt\u00e1sok a m\u00e1r nem t\u00e1mogatott PHP 7.4, PHP 8.0 \u00e9s PHP 8.1 \u00e1gain, amelyekben k\u00e9t kritikus s\u00e9r\u00fcl\u00e9kenys\u00e9get jav\u00edtottak:<\/p>\n<ul>\n<li class=\"l\"> CVE-2026-109618 \u2014 t\u00e1voli k\u00f3dv\u00e9grehajt\u00e1s, amelyet az okoz, hogy a szabad mem\u00f3ria kimer\u00fcl\u00e9s\u00e9vel a mem\u00f3riahi\u00e1ny-kezel\u0151 a longjmp() f\u00fcggv\u00e9ny v\u00e9grehajt\u00e1s\u00e1val felf\u00fcggesztheti a PHP-interpretert egy olyan \u00e1llapotban, amikor csak a k\u00e9r\u00e9s feldolgoz\u00e1s\u00e1hoz sz\u00fcks\u00e9ges bels\u0151 strukt\u00far\u00e1k egy r\u00e9sze van inicializ\u00e1lva. Ezt k\u00f6vet\u0151en a k\u00e9r\u00e9s feldolgoz\u00e1s\u00e1t befejez\u0151 f\u00fcggv\u00e9ny ezekhez a strukt\u00far\u00e1khoz olyan m\u00f3don fordul, mintha m\u00e1r inicializ\u00e1lva lenn\u00e9nek, hab\u00e1r a sz\u00e1mukra sz\u00fcks\u00e9ges mem\u00f3ria nem lett lefoglalva.\n<p>A t\u00e1mad\u00e1s f\u0151 ir\u00e1nyvonala a multipart k\u00e9r\u00e9sek manipul\u00e1l\u00e1sa, hogy olyan k\u00f6r\u00fclm\u00e9nyeket teremtsenek, amelyekb\u0151l a folyamat rendelkez\u00e9sre \u00e1ll\u00f3 mem\u00f3ria kimer\u00fcl. A post_max_size korl\u00e1t megker\u00fcl\u00e9s\u00e9re a Content-Length fejl\u00e9cet nem adj\u00e1k meg, \u00e9s egy hatalmas sz\u00e1m\u00fa HTTP-fejl\u00e9cet lehet \u00e1tadni. Lehets\u00e9ges c\u00e9lzott t\u00e1mad\u00e1sok v\u00e9grehajt\u00e1sa is a PHP-alkalmaz\u00e1sok egyes m\u0171veleteire, amelyek t\u00falzottan sok mem\u00f3ri\u00e1t haszn\u00e1lnak. Az exploit l\u00e9tez\u00e9s\u00e9t a mod_php meger\u0151s\u00edtette, mivel ez a shutdown() f\u00fcggv\u00e9nyt h\u00edvja meg m\u00e9g hiba eset\u00e9n is. A PHP-FPM hiba eset\u00e9n befejezi a gyermekfolyamatot, ami nehez\u00edti a t\u00e1mad\u00e1s v\u00e9grehajt\u00e1s\u00e1t, de elm\u00e9letileg nem z\u00e1rja ki azt. <\/p>\n<li class=\"l\"> CVE-2026-109619 \u2014 t\u00e1voli k\u00f3dv\u00e9grehajt\u00e1s, amely a mem\u00f3ria felszabad\u00edt\u00e1sa ut\u00e1ni hozz\u00e1f\u00e9r\u00e9sb\u0151l ad\u00f3dik a glob\u00e1lis \u00e1llapot helytelen tiszt\u00edt\u00e1sa miatt, amely egy adott k\u00e9r\u00e9shez van k\u00f6tve. Amennyiben a k\u00e9r\u00e9st fat\u00e1lis hiba, id\u0151t\u00fall\u00e9p\u00e9s vagy mem\u00f3riahi\u00e1ny megszak\u00edtja, a glob\u00e1lis \u00e1llapot nem ker\u00fclhet vissza\u00e1ll\u00edt\u00e1sra, \u00e9s a mutat\u00f3k akt\u00edvak maradhatnak, annak ellen\u00e9re, hogy a mem\u00f3ria, amelyre mutatnak, m\u00e1r felszabadult. A k\u00f6vetkez\u0151 k\u00e9r\u00e9s feldolgoz\u00e1sa sor\u00e1n ugyanabban a folyamatban a fennmarad\u00f3 mutat\u00f3val a r\u00e9gi glob\u00e1lis \u00e1llapothoz t\u00f6rt\u00e9n\u0151 el\u00e9r\u00e9s k\u00f6vetkezhet be.\n<p>A mem\u00f3ria kimer\u00fcl\u00e9s\u00e9nek a multipart k\u00e9r\u00e9sek feldolgoz\u00e1sa sor\u00e1n t\u00f6rt\u00e9n\u0151 jelz\u00e9s\u00e9re szolg\u00e1l\u00f3 felt\u00e9telek l\u00e9trehoz\u00e1sa r\u00e9v\u00e9n haszn\u00e1lhat\u00f3 ki. Az els\u0151dleges \u00e9s meger\u0151s\u00edtett t\u00e1mad\u00e1si vektork\u00e9nt eml\u00edtik a fatal_error_backtraces kezel\u0151t a PHP 8.5-ben, amely nem \u00e1ll\u00edtja vissza a nyomvonal \u00e1llapot\u00e1t a befejez\u00e9skor. Az els\u0151 esetben a t\u00e1mad\u00e1s lehets\u00e9ges mod_php \u00e9s PHP-FPM alatt, m\u00edg a m\u00e1sodik esetben csak mod_php alatt. Szint\u00e9n megeml\u00edtik a m\u00e9g nem meger\u0151s\u00edtett lehet\u0151s\u00e9g\u00e9t a t\u00e1mad\u00e1s v\u00e9grehajt\u00e1s\u00e1nak olyan konfigur\u00e1ci\u00f3kban, ahol a k\u00e9r\u00e9s korai feldolgoz\u00e1s\u00e1nak f\u00e1zis\u00e1ban figyelmeztet\u00e9seket gener\u00e1l\u00f3 ir\u00e1nyelvek vannak.<\/p>\n<\/ul>\n<p>Azt \u00e1ll\u00edtj\u00e1k, hogy a sebezhet\u0151s\u00e9gek teljes blokkol\u00e1sa csak friss\u00edt\u00e9s telep\u00edt\u00e9s\u00e9vel lehets\u00e9ges. Az al\u00e1bbi int\u00e9zked\u00e9sek cs\u00f6kkenthetik a sikeres t\u00e1mad\u00e1sok kock\u00e1zat\u00e1t, de nem teszik a rendszert teljesen biztons\u00e1goss\u00e1:<\/p>\n<ul>\n<li class=\"l\"> A php.ini f\u00e1jlban a &#171;memory_limit=-1&#187; param\u00e9ter be\u00e1ll\u00edt\u00e1sa megnehez\u00edti a t\u00e1mad\u00f3 sz\u00e1m\u00e1ra a mem\u00f3riahat\u00e1rok kimer\u00fcl\u00e9s\u00e9nek ellen\u0151rz\u00e9s\u00e9t.\n<li class=\"l\"> A &#171;post_max_size = 8M&#187; param\u00e9ter be\u00e1ll\u00edt\u00e1sa, ha nincs sz\u00fcks\u00e9g nagy f\u00e1jlok felt\u00f6lt\u00e9s\u00e9re. A &#171;upload_max_filesize&#187; param\u00e9ter \u00e9rt\u00e9k\u00e9nek kisebbnek kell lennie, mint a &#171;post_max_size&#187; param\u00e9ter\u00e9.\n<li class=\"l\"> A rendszer szintj\u00e9n megengedett mem\u00f3riafogyaszt\u00e1si limit be\u00e1ll\u00edt\u00e1sa a cgroup memory.max vagy a kont\u00e9ner mem\u00f3riafogyaszt\u00e1si param\u00e9terein kereszt\u00fcl, de nem a rendszerlimitek RLIMIT_AS \u00e9s RLIMIT_DATA \u00e1ltal, amelyek csak a problematicus longjmp() h\u00edv\u00e1st provok\u00e1lj\u00e1k.\n<li class=\"l\"> Ha a teljes\u00edtm\u00e9ny nem fontos, korl\u00e1tozhatja az egy munkafolyamat \u00e1ltal feldolgozott k\u00e9r\u00e9sek sz\u00e1m\u00e1t a PHP-FPM pm.max_requests=1 \u00e9s az Apache httpd MaxRequestsPerChild be\u00e1ll\u00edt\u00e1s\u00e1val.\n<li class=\"l\"> Be\u00e1ll\u00edt\u00e1s php.ini vagy konfigur\u00e1ci\u00f3s szinten <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/server\/dts-los-angeles\/\"   title=\"a szerver\" data-wpil-keyword-link=\"linked\">a szerver<\/a> (nem az ini_set() vagy a FPM .user.ini f\u00fcggv\u00e9ny haszn\u00e1lat\u00e1val, mivel a param\u00e9ternek a k\u00e9r\u00e9s feldolgoz\u00e1sa el\u0151tt kell hat\u00e1lyba l\u00e9pnie) a &#171;session.upload_progress.enabled=0&#187; param\u00e9ter.\n<li class=\"l\"> A PHP 8.5-\u00f6s verzi\u00f3 haszn\u00e1lata eset\u00e9n a &#171;fatal_error_backtraces=0&#187; param\u00e9tert kell be\u00e1ll\u00edtani.\n<li class=\"l\"> A k\u00fcl\u00f6nb\u00f6z\u0151 k\u00e9r\u00e9sekhez kapcsol\u00f3d\u00f3 elavult vagy hib\u00e1s be\u00e1ll\u00edt\u00e1sok elt\u00e1vol\u00edt\u00e1sa (mint p\u00e9ld\u00e1ul assert.* \u00e9s hib\u00e1s open_basedir \u00fatvonalak), amelyek diagnosztikai \u00fczeneteket gener\u00e1lnak az inicializ\u00e1l\u00e1s el\u0151tt.\n<li class=\"l\"> A PHP k\u00f3dban azokat a helyzeteket kell megsz\u00fcntetni, amelyek id\u0151t\u00fall\u00e9p\u00e9sekhez \u00e9s fat\u00e1lis hib\u00e1khoz vezetnek, p\u00e9ld\u00e1ul a callback-handler \u00e9s a felt\u00f6lt\u00e9sek feldolgoz\u00e1sa sor\u00e1n fell\u00e9p\u0151 hib\u00e1k miatt.\n<li class=\"l\"> A r\u00e9gi PHP verzi\u00f3k k\u00f3dj\u00e1ban az els\u0151 sebezhet\u0151s\u00e9g blokkol\u00e1s\u00e1hoz a longjmp() h\u00edv\u00e1s helyett az _exit() haszn\u00e1lhat\u00f3 a szabad mem\u00f3ria kimer\u00fcl\u00e9s\u00e9nek kezel\u0151j\u00e9ben.\n<li class=\"l\"> Tov\u00e1bb\u00e1 cs\u00f6kkenteni lehet a max_input_nesting_level param\u00e9ter \u00e9rt\u00e9k\u00e9t a php.ini f\u00e1jlban, \u00e9s blokkolni a multipart k\u00e9r\u00e9seket, ahogy azt a kor\u00e1bbi bejelent\u00e9sben bemutatt\u00e1k.\n<\/ul>\n<p>A sebezhet\u0151s\u00e9gek elh\u00e1r\u00edt\u00e1s\u00e1nak \u00e1llapot\u00e1t az al\u00e1bbi oldalakon lehet \u00e9rt\u00e9kelni: Debian, Ubuntu, SUSE, RHEL, Gentoo, Arch,<br \/>\nFedora, FreeBSD.<\/p>\n<p>Kieg\u00e9sz\u00edt\u00e9s 1: A sebezhet\u0151s\u00e9geket az AI modellek, a GPT\u20115.6 \u00e9s a Gemini 4 Argon seg\u00edts\u00e9g\u00e9vel fedezt\u00e9k fel. Az OpenAI k\u00f6zz\u00e9tette a php2shell-checker eszk\u00f6zt, amely a weboldalak \u00e9s helyi v\u00e9grehajthat\u00f3 f\u00e1jlok sebezhet\u0151s\u00e9g\u00e9nek ellen\u0151rz\u00e9s\u00e9re szolg\u00e1l, de ez az eszk\u00f6z csup\u00e1n a HTTP-szerver vagy a &#171;php -v&#187; parancs \u00e1ltal visszaadott PHP verzi\u00f3sz\u00e1mot ellen\u0151rzi, an\u00e9lk\u00fcl, hogy r\u00e9szletes elemz\u00e9st v\u00e9gezne.<\/p>\n<p>Kieg\u00e9sz\u00edt\u00e9s 2: Az exploitet protot\u00edpus\u00e1nak szerz\u0151je, amely a mem\u00f3ria duplaszabad\u00edt\u00e1sa (double-free) \u00e1ltal okozott sebezhet\u0151s\u00e9get haszn\u00e1lja, arr\u00f3l sz\u00e1molt be, hogy a probl\u00e9ma tov\u00e1bbra is megoldatlan a PHP 8.5.12 kiad\u00e1s\u00e1ban, \u00e9s az exploit tov\u00e1bbra is m\u0171k\u00f6dik. Kor\u00e1bban a PHP k\u00e9pvisel\u0151i kijelentett\u00e9k, hogy ez a sebezhet\u0151s\u00e9g nem kapcsol\u00f3dik a tervezett jav\u00edt\u00e1sokhoz, \u00e9s nem val\u00f3s probl\u00e9ma. Az exploit szerz\u0151je pedig azt \u00e1ll\u00edtotta, hogy egy teljesen m\u00e1s sebezhet\u0151s\u00e9gr\u0151l van sz\u00f3.<br \/>\n<br \/>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=66520\">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 PHP 8.5.12, 8.4.27, 8.3.36 \u0438 8.2.35, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u0430\u0442\u0447\u0438 \u0434\u043b\u044f \u0443\u0436\u0435 \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0432\u0435\u0442\u043e\u043a PHP 7.4, PHP 8.0 \u0438 PHP 8.1 (\u0443\u044f\u0437\u0432\u0438\u043c\u044b\u0435 \u0432\u0435\u0440\u0441\u0438\u0438 \u0441 5.4 \u043f\u043e 7.3 \u043e\u0441\u0442\u0430\u044e\u0442\u0441\u044f \u0431\u0435\u0437 \u043f\u0430\u0442\u0447\u0435\u0439), \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u044b \u0434\u0432\u0435 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438: CVE-2026-109618 &#8212; \u0443\u0434\u0430\u043b\u0451\u043d\u043d\u043e\u0435 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0435 \u043a\u043e\u0434\u0430, \u0432\u044b\u0437\u0432\u0430\u043d\u043d\u043e\u0435 \u0442\u0435\u043c, \u0447\u0442\u043e \u043f\u0440\u0438 \u0438\u0441\u0447\u0435\u0440\u043f\u0430\u043d\u0438\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0443 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0439 \u043f\u0430\u043c\u044f\u0442\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a \u043d\u0435\u0445\u0432\u0430\u0442\u043a\u0438 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-183943","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 -->\n\t<meta name=\"description\" content=\"\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 PHP 8.5.12, 8.4.27, 8.3.36 \u0438 8.2.35, \u0430 \u0442\u0430\u043a\u0436\u0435 \u043f\u0430\u0442\u0447\u0438 \u0434\u043b\u044f \u0443\u0436\u0435 \u043d\u0435 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