{"id":100021,"date":"2021-04-25T10:22:49","date_gmt":"2021-04-25T08:22:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-git-dlya-cygwin-pozvolyayushhaya-organizovat-vypolnenie-koda"},"modified":"2021-04-25T10:22:49","modified_gmt":"2021-04-25T08:22:49","slug":"uyazvimost-v-git-dlya-cygwin-pozvolyayushhaya-organizovat-vypolnenie-koda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-git-dlya-cygwin-pozvolyayushhaya-organizovat-vypolnenie-koda","title":{"rendered":"Git s\u00e9r\u00fcl\u00e9kenys\u00e9g Cygwin sz\u00e1m\u00e1ra, amely lehet\u0151v\u00e9 teszi a k\u00f3d v\u00e9grehajt\u00e1s\u00e1t","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

A Git kritikus sebezhet\u0151s\u00e9get (CVE-2021-29468) fedeztek fel, amely csak Cygwin k\u00f6rnyezetben t\u00f6rt\u00e9n\u0151 \u00e9p\u00edt\u00e9s sor\u00e1n l\u00e9p fel (az alap Linux API Windows alatt t\u00f6rt\u00e9n\u0151 emul\u00e1l\u00e1s\u00e1hoz sz\u00fcks\u00e9ges k\u00f6nyvt\u00e1r \u00e9s tipikus linuxprogramok k\u00e9szlete Windowsra). A sebezhet\u0151s\u00e9g lehet\u0151v\u00e9 teszi a t\u00e1mad\u00f3 k\u00f3dj\u00e1nak v\u00e9grehajt\u00e1s\u00e1t adatkinyer\u00e9s (\"git checkout\") sor\u00e1n egy t\u00e1mad\u00f3 \u00e1ltal ellen\u0151rz\u00f6tt t\u00e1rol\u00f3b\u00f3l. A probl\u00e9ma a git 2.31.1-2 csomagban ker\u00fclt jav\u00edt\u00e1sra Cygwin sz\u00e1m\u00e1ra. A Git f\u0151 projektj\u00e9ben a probl\u00e9ma m\u00e9g nem lett orvosolva (val\u00f3sz\u00edn\u0171tlen, hogy valaki saj\u00e1t kez\u0171leg \u00e9p\u00edti a git-et Cygwinhez, ahelyett, hogy k\u00e9sz csomagot haszn\u00e1lna.) <\/p>\n

A sebezhet\u0151s\u00e9get a Cygwin k\u00f6rnyezet Unix-szer\u0171 rendszerk\u00e9nt val\u00f3 kezel\u00e9se okozza, nem Windowsk\u00e9nt, ami a visszafel\u00e9 per jel (\\) haszn\u00e1lat\u00e1ra vonatkoz\u00f3 korl\u00e1toz\u00e1sok hi\u00e1ny\u00e1hoz vezet, m\u00edg Cygwinben, ak\u00e1rcsak Windowsban, ez a karakter a k\u00f6nyvt\u00e1rak elv\u00e1laszt\u00e1s\u00e1ra haszn\u00e1lhat\u00f3. Ennek eredm\u00e9nyek\u00e9nt, egy k\u00fcl\u00f6n\u00f6sen m\u00f3dos\u00edtott t\u00e1rol\u00f3 l\u00e9trehoz\u00e1s\u00e1val, amely szimbolikus linkeket \u00e9s f\u00e1jlokat tartalmaz visszafel\u00e9 per jellel, tetsz\u0151leges f\u00e1jlok fel\u00fcl\u00edr\u00e1s\u00e1t lehet el\u00e9rni, amikor ezt a t\u00e1rol\u00f3t Cygwinbe t\u00f6ltik be (a Windowsos Git hasonl\u00f3 sebezhet\u0151s\u00e9g\u00e9t 2019-ben jav\u00edtott\u00e1k). A f\u00e1jlok fel\u00fcl\u00edr\u00e1s\u00e1nak lehet\u0151s\u00e9ge r\u00e9v\u00e9n a t\u00e1mad\u00f3 fel\u00fcl\u00edrhatja a git hook-h\u00edv\u00e1sokat, \u00e9s v\u00e9grehajthat b\u00e1rmilyen k\u00f3dot a rendszeren.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 Git \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-2021-29468), \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u044e\u0449\u0430\u044f\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0438 \u0441\u0431\u043e\u0440\u043a\u0435 \u0434\u043b\u044f \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u044f Cygwin (\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 \u0434\u043b\u044f \u044d\u043c\u0443\u043b\u044f\u0446\u0438\u0438 \u0431\u0430\u0437\u043e\u0432\u043e\u0433\u043e Linux API \u0432 Windows \u0438 \u043d\u0430\u0431\u043e\u0440 \u0442\u0438\u043f\u043e\u0432\u044b\u0445 linux-\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u0434\u043b\u044f Windows). \u0423\u044f\u0432\u0437\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u0437\u043b\u043e\u0443\u043c\u044b\u0448\u043b\u0435\u043d\u043d\u0438\u043a\u0430 \u043f\u0440\u0438 \u0438\u0437\u0432\u043b\u0435\u0447\u0435\u043d\u0438\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 («git checkout») \u0438\u0437 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f, \u043f\u043e\u0434\u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044c\u043d\u043e\u0433\u043e \u0430\u0442\u0430\u043a\u0443\u044e\u0449\u0435\u043c\u0443. \u041f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0432 \u043f\u0430\u043a\u0435\u0442\u0435 git 2.31.1-2 \u0434\u043b\u044f Cygwin. \u0412 \u043e\u0441\u043d\u043e\u0432\u043d\u043e\u043c \u043f\u0440\u043e\u0435\u043a\u0442\u0435 Git \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u043e\u043a\u0430 […]<\/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-100021","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\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\udd47Git s\u00e9r\u00fcl\u00e9kenys\u00e9g Cygwin sz\u00e1m\u00e1ra, amely lehet\u0151v\u00e9 teszi a k\u00f3d v\u00e9grehajt\u00e1s\u00e1t | ProHoster","description":"A Git-ben felfedeztek egy kritikus s\u00e9r\u00fcl\u00e9kenys\u00e9get (CVE-2021-29468), amely csak Cygwin k\u00f6rnyezetben t\u00f6rt\u00e9n\u0151 \u00f6ssze\u00e1ll\u00edt\u00e1skor jelentkezik (az alap Linux API Windows alatti emul\u00e1ci\u00f3j\u00e1ra 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