{"id":78706,"date":"2020-04-21T13:42:05","date_gmt":"2020-04-21T11:42:05","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/obnovlenie-git-s-ustraneniem-eshhyo-odnoj-uyazvimosti"},"modified":"2020-04-21T13:42:05","modified_gmt":"2020-04-21T11:42:05","slug":"obnovlenie-git-s-ustraneniem-eshhyo-odnoj-uyazvimosti","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/obnovlenie-git-s-ustraneniem-eshhyo-odnoj-uyazvimosti","title":{"rendered":"Git friss\u00edt\u00e9s egy \u00fajabb sebezhet\u0151s\u00e9g jav\u00edt\u00e1s\u00e1val","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Megjelentek<\/a><\/noindex> A jav\u00edtott kiad\u00e1sok a Git 2.26.2, 2.25.4, 2.24.3, 2.23.3, 2.22.4, 2.21.3, 2.20.4, 2.19.5, 2.18.4 \u00e9s 2.17.5 elosztott forr\u00e1skezel\u0151 rendszerb\u0151l, amelyek kijav\u00edtj\u00e1k vulnerability<\/a><\/noindex> (CVE-2020-11008<\/a><\/noindex>), eml\u00e9keztet\u0151 a probl\u00e9m\u00e1t<\/a><\/noindex>, amelyet m\u00falt h\u00e9ten jav\u00edtottak. Az \u00faj sebezhet\u0151s\u00e9g szint\u00e9n \u00e9rinti a \u201ecredential.helper\u201d kezel\u0151ket, \u00e9s akkor kihaszn\u00e1lhat\u00f3, ha egy gondosan megform\u00e1lt URL-t tov\u00e1bb\u00edtanak, amely \u00faj sort, \u00fcres hostot vagy meg nem adott k\u00e9r\u00e9s s\u00e9m\u00e1t tartalmaz. Ilyen URL feldolgoz\u00e1sa sor\u00e1n a credential.helper olyan hiteles\u00edt\u0151 adatokat k\u00fcld, amelyek nem felelnek meg a k\u00e9rt protokollnak vagy a c\u00edmezett hosztnak.<\/p>\n

A m\u00faltbeli probl\u00e9m\u00e1val ellent\u00e9tben az \u00faj sebezhet\u0151s\u00e9g kihaszn\u00e1l\u00e1sakor a t\u00e1mad\u00f3 nem tudja k\u00f6zvetlen\u00fcl ir\u00e1ny\u00edtani azt a hosztot, ahonnan harmadik f\u00e9l hiteles\u00edt\u0151 adatai ker\u00fclnek tov\u00e1bb\u00edt\u00e1sra. Az, hogy melyik hiteles\u00edt\u0151 adat sziv\u00e1rog ki, att\u00f3l f\u00fcgg, hogy a credential.helper a \u201ehost\u201d hi\u00e1nyz\u00f3 param\u00e9ter\u00e9nek feldolgoz\u00e1sa sor\u00e1n hogyan \u00e9rv\u00e9nyes\u00edti a hiteles\u00edt\u0151 adatokat. A probl\u00e9ma l\u00e9nyege, hogy az \u00fcres mez\u0151k az URL-ben sok credential.helper kezel\u0151 sz\u00e1m\u00e1ra utas\u00edt\u00e1sk\u00e9nt \u00e9rtelmez\u0151dnek a jelenlegi k\u00e9r\u00e9shez kapcsol\u00f3d\u00f3 hiteles\u00edt\u0151 adatok alkalmaz\u00e1s\u00e1ra. \u00cdgy a credential.helper olyan hiteles\u00edt\u0151 adatokat k\u00fcldhet a t\u00e1mad\u00f3 \u00e1ltal megadott URL c\u00edmre, amelyeket egy m\u00e1sik szerverhez mentettek el. <\/p>\n

A probl\u00e9ma a \u201egit clone\u201d \u00e9s \u201egit fetch\u201d m\u0171veletek v\u00e9grehajt\u00e1sakor jelentkezik, de a legvesz\u00e9lyesebb a szubmodulok feldolgoz\u00e1sa sor\u00e1n \u2014 a \u201egit submodule update\u201d v\u00e9grehajt\u00e1sakor automatikusan feldolgoz\u00e1sra ker\u00fclnek az a URL-ek, amelyeket a .gitmodules f\u00e1jlban tal\u00e1lhat\u00f3ak a rep\u00f3ban. Egy lehets\u00e9ges megold\u00e1s a probl\u00e9ma megker\u00fcl\u00e9s\u00e9re aj\u00e1nlott<\/a><\/noindex> az, hogy ne haszn\u00e1ljuk a credential.helper-t nyilv\u00e1nos repozit\u00f3riumok el\u00e9r\u00e9sekor, \u00e9s ne alkalmazzuk a \u201egit clone\u201d parancsot \u201e--recurse-submodules\u201d m\u00f3dban nem megb\u00edzhat\u00f3 repozit\u00f3riumokkal. <\/p>\n

Az \u00faj Git kiad\u00e1sokban javasolt jav\u00edt\u00e1st<\/a><\/noindex> tiltja a credential.helper h\u00edv\u00e1s\u00e1t olyan URL-ekhez, amelyek tartalmazz\u00e1k \u00e9rtelmezhetetlen \u00e9rt\u00e9kek<\/a><\/noindex> (p\u00e9ld\u00e1ul h\u00e1rom perjel megad\u00e1sa helyett kett\u0151 \u2014 \u201ehttp:\/\/\/host\u201d vagy an\u00e9lk\u00fcl, hogy megadn\u00e1nk a protokoll s\u00e9m\u00e1t \u2014 \u201ehttp::ftp.example.com\/\u201d). A probl\u00e9ma \u00e9rinti a store (be\u00e9p\u00edtett Git hiteles\u00edt\u0151 adath\u00e1tt\u00e9r), cache (be\u00e9p\u00edtett be\u00edrt hiteles\u00edt\u0151 adatok gyors\u00edt\u00f3t\u00e1ra) \u00e9s osxkeychain (macOS h\u00e1tt\u00e9r) kezel\u0151ket. A Git Credential Manager (Windows h\u00e1tt\u00e9r) nem \u00e9rintett a sebezhet\u0151s\u00e9gben.<\/p>\n

A csomagok friss\u00edt\u00e9seinek nyomon k\u00f6vet\u00e9se a disztrib\u00faci\u00f3kban a k\u00f6vetkez\u0151 oldalakon lehets\u00e9ges Debian<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, RHEL<\/a><\/noindex>, SUSE\/openSUSE<\/a><\/noindex>, Fedora<\/a><\/noindex>, Arch<\/a><\/noindex>, ALT<\/a><\/noindex>, FreeBSD<\/a><\/noindex>.<\/p>\n

<\/a><\/noindex><\/p>\n

Forr\u00e1s: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\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 \u0440\u0430\u0441\u043f\u0440\u0435\u0434\u0435\u043b\u0451\u043d\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u043c\u0438 \u0442\u0435\u043a\u0441\u0442\u0430\u043c\u0438 Git 2.26.2, 2.25.4, 2.24.3, 2.23.3, 2.22.4, 2.21.3, 2.20.4, 2.19.5, 2.18.4 \u0438 2.17.5, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2020-11008), \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u044e\u0449\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443, \u0443\u0441\u0442\u0440\u0430\u043d\u0451\u043d\u043d\u0443\u044e \u043d\u0430 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 \u043d\u0435\u0434\u0435\u043b\u0435. \u041d\u043e\u0432\u0430\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0442\u0430\u043a\u0436\u0435 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 «credential.helper» \u0438 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0438 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e URL, \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0449\u0435\u0433\u043e \u0441\u0438\u043c\u0432\u043e\u043b \u043d\u043e\u0432\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u0438, \u043f\u0443\u0441\u0442\u043e\u0439 \u0445\u043e\u0441\u0442 \u0438\u043b\u0438 \u043d\u0435 \u0443\u043a\u0430\u0437\u0430\u043d\u043d\u0443\u044e \u0441\u0445\u0435\u043c\u0443 \u0437\u0430\u043f\u0440\u043e\u0441\u0430. 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