{"id":86563,"date":"2020-06-27T01:42:01","date_gmt":"2020-06-26T23:42:01","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-curl-7-71-0-s-ustraneniem-dvuh-uyazvimostej"},"modified":"2020-06-27T01:42:01","modified_gmt":"2020-06-26T23:42:01","slug":"vypusk-curl-7-71-0-s-ustraneniem-dvuh-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/vypusk-curl-7-71-0-s-ustraneniem-dvuh-uyazvimostej","title":{"rendered":"A curl 7.71.0 verzi\u00f3 kiad\u00e1sra ker\u00fclt, k\u00e9t sebezhet\u0151s\u00e9g kijav\u00edt\u00e1s\u00e1val","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/curl.haxx.se\/mail\/archive-2020-06\/0055.html\">El\u00e9rhet\u0151<\/a><\/noindex> az \u00faj verzi\u00f3ja az adatk\u00fcld\u0151 \u00e9s -fogad\u00f3 seg\u00e9dprogramnak a h\u00e1l\u00f3zaton &#8212; <noindex><a rel=\"nofollow\" href=\"https:\/\/curl.haxx.se\/\">curl 7.71.0<\/a><\/noindex>, amely lehet\u0151v\u00e9 teszi a lek\u00e9r\u00e9s rugalmas megform\u00e1l\u00e1s\u00e1t olyan param\u00e9terek megad\u00e1s\u00e1val, mint a cookie, user_agent, referer \u00e9s b\u00e1rmilyen egy\u00e9b fejl\u00e9cek. A cURL t\u00e1mogatja a HTTP, HTTPS, HTTP\/2.0, HTTP\/3, SMTP, IMAP, POP3, Telnet, FTP, LDAP, RTSP, RTMP \u00e9s egy\u00e9b h\u00e1l\u00f3zati protokollokat. Ezzel egy id\u0151ben megjelent a p\u00e1rhuzamosan fejlesztett libcurl k\u00f6nyvt\u00e1r friss\u00edt\u00e9se, amely API-t biztos\u00edt a cURL \u00f6sszes funkci\u00f3j\u00e1nak alkalmaz\u00e1s\u00e1ra olyan programokban, mint a C, Perl, PHP, Python. <\/p>\n<p>A leg\u00fajabb verzi\u00f3ban hozz\u00e1ad\u00f3dott a &#171;&#8212;retry-all-errors&#187; lehet\u0151s\u00e9g, amely lehet\u0151v\u00e9 teszi a m\u0171veletek megism\u00e9tl\u00e9s\u00e9t b\u00e1rmilyen hiba eset\u00e9n, \u00e9s k\u00e9t sebezhet\u0151s\u00e9get is megsz\u00fcntettek.<\/p>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.openwall.com\/lists\/oss-security\/2020\/06\/24\/2\">S\u00e9r\u00fcl\u00e9kenys\u00e9g<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/curl.haxx.se\/docs\/CVE-2020-8177.html)\">CVE-2020-8177<\/a><\/noindex> Ez lehet\u0151v\u00e9 teszi, hogy a t\u00e1mad\u00f3ra ir\u00e1nyul\u00f3 szerverhez val\u00f3 hozz\u00e1f\u00e9r\u00e9s sor\u00e1n fel\u00fcl\u00edrja a helyi f\u00e1jlt a rendszeren. A probl\u00e9ma csak az &#171;-J&#187; (&#171;&#8212;remote-header-name&#187;) \u00e9s az &#171;-i&#187; (&#171;&#8212;head&#187;) opci\u00f3k egyidej\u0171 haszn\u00e1latakor jelentkezik. Az &#171;-J&#187; lehet\u0151s\u00e9g lehet\u0151v\u00e9 teszi, hogy a f\u00e1jl a fejl\u00e9cben megadott n\u00e9ven ment\u00e9sre ker\u00fclj\u00f6n.<br \/>\n&#171;Content-Disposition&#187;. Ha a megadott n\u00e9vvel m\u00e1r l\u00e9tezik f\u00e1jl, a curl program alap\u00e9rtelmez\u00e9s szerint megtagadja a fel\u00fcl\u00edr\u00e1st, de ha az &#171;-i&#187; opci\u00f3 akt\u00edv, a ellen\u0151rz\u00e9s logik\u00e1ja felborul, \u00e9s a f\u00e1jl fel\u00fcl\u00edr\u00f3dik (az ellen\u0151rz\u00e9s a v\u00e1lasz t\u00f6rzs\u00e9nek fogad\u00e1sa sor\u00e1n t\u00f6rt\u00e9nik, de az &#171;-i&#187; opci\u00f3 eset\u00e9n el\u0151sz\u00f6r a HTTP-fejl\u00e9cek ker\u00fclnek megjelen\u00edt\u00e9sre, amelyek elment\u0151dnek a v\u00e1lasz t\u00f6rzs\u00e9nek feldolgoz\u00e1sa el\u0151tt). A f\u00e1jlba csak a HTTP-fejl\u00e9cek ker\u00fclnek ment\u00e9sre, de a szerver tetsz\u0151leges adatokat is adhat vissza a fejl\u00e9cek helyett, \u00e9s ezeket is elmenti.<\/p>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/www.openwall.com\/lists\/oss-security\/2020\/06\/24\/1\">S\u00e9r\u00fcl\u00e9kenys\u00e9g<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/curl.haxx.se\/docs\/CVE-2020-8169.html\">CVE-2020-8169<\/a><\/noindex>  a DNS szervereken a hozz\u00e1f\u00e9r\u00e9si jelszavak (p\u00e9ld\u00e1ul Basic, Digest, NTLM stb.) egyes r\u00e9szeinek kisziv\u00e1rg\u00e1s\u00e1hoz vezethet. Ha a jelsz\u00f3ban &#171;@&#187; karaktert haszn\u00e1lunk, amely az URL-ben a jelsz\u00f3 elv\u00e1laszt\u00f3jak\u00e9nt is megjelenik, HTTP-\u00e1tir\u00e1ny\u00edt\u00e1s eset\u00e9n a curl a jelsz\u00f3 &#171;@&#187; karakter ut\u00e1ni r\u00e9sz\u00e9t a domain n\u00e9vvel egy\u00fctt k\u00fcldi el a n\u00e9v meghat\u00e1roz\u00e1s\u00e1hoz. P\u00e9ld\u00e1ul, ha a jelsz\u00f3 &#171;passw@rd123&#187; \u00e9s a felhaszn\u00e1l\u00f3n\u00e9v &#171;dan&#187;, a curl az &#171;https:\/\/dan:passw@rd123@example.com\/path&#187; URL-t gener\u00e1lja ahelyett, hogy a &#171;https:\/\/dan:passwrd123@example.com\/path&#187; URL-t k\u00fclden\u00e9, \u00e9s \u00edgy a &#171;rd123@example.com&#187; host felold\u00e1s\u00e1ra k\u00fcld b\u00f6ng\u00e9sz\u0151i k\u00e9r\u00e9st a &#171;example.com&#187; helyett.\n<p>A probl\u00e9ma a relat\u00edv HTTP-\u00e1tir\u00e1ny\u00edt\u00e1sok t\u00e1mogat\u00e1s\u00e1nak bekapcsol\u00e1sakor mer\u00fcl fel (a CURLOPT_FOLLOWLOCATION r\u00e9v\u00e9n kikapcsolva). Hagyom\u00e1nyos DNS haszn\u00e1lata eset\u00e9n a DNS-szolg\u00e1ltat\u00f3 \u00e9s a t\u00e1mad\u00f3, aki k\u00e9pes a tranzit h\u00e1l\u00f3zati forgalom lehallgat\u00e1s\u00e1ra, megtudhatja a jelsz\u00f3 egy r\u00e9sz\u00e9t (m\u00e9g akkor is, ha az eredeti k\u00e9r\u00e9s HTTPS-en t\u00f6rt\u00e9nt, mivel a DNS-forgalom nem titkos\u00edtott). A DNS-over-HTTPS (DoH) alkalmaz\u00e1sa eset\u00e9n a sziv\u00e1rg\u00e1s a DoH-szolg\u00e1ltat\u00f3ra korl\u00e1toz\u00f3dik.<\/p>\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Forr\u00e1s: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53239\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u0443\u0442\u0438\u043b\u0438\u0442\u044b \u0434\u043b\u044f \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0438 \u0434\u0430\u043d\u043d\u044b\u0445 \u043f\u043e \u0441\u0435\u0442\u0438 &#8212; curl 7.71.0, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0435\u0439 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0433\u0438\u0431\u043a\u043e\u0433\u043e \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u0441 \u0437\u0430\u0434\u0430\u043d\u0438\u0435\u043c \u0442\u0430\u043a\u0438\u0445 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u043e\u0432, \u043a\u0430\u043a cookie, user_agent, referer \u0438 \u043b\u044e\u0431\u044b\u0445 \u0434\u0440\u0443\u0433\u0438\u0445 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u043e\u0432. cURL \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 HTTP, HTTPS, HTTP\/2.0, HTTP\/3, SMTP, IMAP, POP3, Telnet, FTP, LDAP, RTSP, RTMP \u0438 \u0434\u0440\u0443\u0433\u0438\u0435 \u0441\u0435\u0442\u0435\u0432\u044b\u0435 \u043f\u0440\u043e\u0442\u043e\u043a\u043e\u043b\u044b. \u041e\u0434\u043d\u043e\u0432\u0440\u0435\u043c\u0435\u043d\u043d\u043e \u0432\u044b\u0448\u043b\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0430\u0440\u0430\u043b\u043b\u0435\u043b\u044c\u043d\u043e \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 [&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-86563","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=\"\u0414\u043e\u0441\u0442\u0443\u043f\u043d\u0430 \u043d\u043e\u0432\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u0443\u0442\u0438\u043b\u0438\u0442\u044b \u0434\u043b\u044f \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u044f \u0438 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