Byly odhaleny detaily \u00fatoku na infrastrukturu pou\u017e\u00edvanou p\u0159i v\u00fdvoji r\u00e1mce strojov\u00e9ho u\u010den\u00ed PyTorch, kter\u00fd umo\u017enil z\u00edskat p\u0159\u00edstupov\u00e9 kl\u00ed\u010de dostate\u010dn\u00e9 pro um\u00edst\u011bn\u00ed libovoln\u00fdch dat v repozit\u00e1\u0159i s vyd\u00e1n\u00edmi projektu na GitHub a AWS, a tak\u00e9 pro vkl\u00e1d\u00e1n\u00ed k\u00f3du do hlavn\u00ed v\u011btve repozit\u00e1\u0159e a p\u0159id\u00e1n\u00ed zadn\u00edho otvoru prost\u0159ednictv\u00edm z\u00e1vislost\u00ed. Z\u00e1m\u011bna vyd\u00e1n\u00ed PyTorch mohla b\u00fdt pou\u017eita k \u00fatoku na velk\u00e9 spole\u010dnosti, jako jsou Google, Meta, Boeing a Lockheed Martin, kter\u00e9 pou\u017e\u00edvaj\u00ed PyTorch ve sv\u00fdch projektech. V r\u00e1mci programu Bug Bounty spole\u010dnost Meta vyplatila v\u00fdzkumn\u00edk\u016fm 16 250 $ za informace o probl\u00e9mu. <\/p>\n
Podstata \u00fatoku spo\u010d\u00edv\u00e1 ve schopnosti vykon\u00e1vat sv\u016fj k\u00f3d na serverech<\/a> nep\u0159etr\u017eit\u00e9 integrace, prov\u00e1d\u011bj\u00edc\u00ed p\u0159ebudov\u00e1v\u00e1n\u00ed a vykon\u00e1v\u00e1n\u00ed \u00fakol\u016f pro testov\u00e1n\u00ed nov\u00fdch zm\u011bn zas\u00edlan\u00fdch do repozit\u00e1\u0159e. Probl\u00e9m se t\u00fdk\u00e1 projekt\u016f, kter\u00e9 vyu\u017e\u00edvaj\u00ed vlastn\u00ed extern\u00ed zpracovatele «Self-Hosted Runner» s GitHub Actions. Na rozd\u00edl od tradi\u010dn\u00edch zpracovatel\u016f GitHub Actions, zpracovatel\u00e9 Self-Hosted nepracuj\u00ed v infrastruktu\u0159e GitHub, ale na vlastn\u00edch serverech. serverech nebo ve virtu\u00e1ln\u00edch<\/a> stroj\u00edch, kter\u00e9 podporuj\u00ed v\u00fdvoj\u00e1\u0159i. <\/p>\n Prov\u00e1d\u011bn\u00ed stavebn\u00edch \u00fakol\u016f na vlastn\u00edch serverech umo\u017e\u0148uje spustit k\u00f3d, kter\u00fd m\u016f\u017ee prov\u00e1d\u011bt skenov\u00e1n\u00ed vnit\u0159n\u00ed s\u00edt\u011b podniku, hled\u00e1n\u00ed v m\u00edstn\u00edm souborov\u00e9m syst\u00e9mu \u0161ifrovac\u00edch kl\u00ed\u010d\u016f a p\u0159\u00edstupov\u00fdch token\u016f, anal\u00fdzu prom\u011bnn\u00fdch prost\u0159ed\u00ed s parametry pro p\u0159\u00edstup k extern\u00edm \u00falo\u017ei\u0161t\u00edm nebo cloudov\u00fdm slu\u017eb\u00e1m. P\u0159i absenci \u0159\u00e1dn\u00e9 izolace konstruk\u010dn\u00edho prost\u0159ed\u00ed mohou nalezen\u00e9 d\u016fv\u011brn\u00e9 \u00fadaje b\u00fdt zasl\u00e1ny \u00fato\u010dn\u00edk\u016fm ven, nap\u0159\u00edklad prost\u0159ednictv\u00edm dotaz\u016f na extern\u00ed API. K ur\u010den\u00ed, zda projekty vyu\u017e\u00edvaj\u00ed «Self-Hosted Runner», lze pou\u017e\u00edt n\u00e1stroj Gato, kter\u00fd analyzuje ve\u0159ejn\u00e9 pracovn\u00ed soubory a z\u00e1znamy spu\u0161t\u011bn\u00ed CI \u00fakol\u016f. <\/p>\n V PyTorch a mnoha dal\u0161\u00edch projektech vyu\u017e\u00edvaj\u00edc\u00edch «Self-Hosted Runner» je spu\u0161t\u011bn\u00ed stavebn\u00edch \u00fakol\u016f povoleno pouze v\u00fdvoj\u00e1\u0159\u016fm, jejich\u017e zm\u011bny byly d\u0159\u00edve zkontrolov\u00e1ny a zahrnuty do k\u00f3du projektu. M\u00edt status «contributor» p\u0159i pou\u017eit\u00ed v\u00fdchoz\u00edch nastaven\u00ed v repozit\u00e1\u0159i umo\u017e\u0148uje spou\u0161t\u011bt zpracovatele GitHub Actions p\u0159i odes\u00edl\u00e1n\u00ed pull request\u016f a t\u00edm p\u00e1dem vykon\u00e1vat sv\u016fj k\u00f3d v jak\u00e9mkoli prost\u0159ed\u00ed GitHub Actions Runner p\u0159ipojen\u00e9m k repozit\u00e1\u0159i nebo vedouc\u00ed organizaci projektu. <\/p>\n Obej\u00edt vazbu na status \u201econtributor\u201c bylo snadn\u00e9 \u2014 sta\u010dilo poslat drobnou zm\u011bnu a po\u010dkat na jej\u00ed p\u0159ijet\u00ed do k\u00f3du, po \u010dem\u017e v\u00fdvoj\u00e1\u0159 automaticky z\u00edskal status aktivn\u00edho \u00fa\u010dastn\u00edka, jeho\u017e pull-requests bylo povoleno testovat v CI infrastruktu\u0159e bez dal\u0161\u00edho ov\u011b\u0159en\u00ed. K z\u00edsk\u00e1n\u00ed statusu aktivn\u00edho v\u00fdvoj\u00e1\u0159e byly b\u011bhem experimentu pou\u017eity drobn\u00e9 kosmetick\u00e9 zm\u011bny t\u00fdkaj\u00edc\u00ed se odstran\u011bn\u00ed p\u0159eklep\u016f v dokumentaci. V r\u00e1mci \u00fatoku na p\u0159\u00edstup k repozit\u00e1\u0159i a \u00falo\u017ei\u0161ti verz\u00ed PyTorch byl b\u011bhem prov\u00e1d\u011bn\u00ed k\u00f3du v \u201eSelf-Hosted Runner\u201c odchycena GitHub token, kter\u00fd se pou\u017e\u00edval k p\u0159\u00edstupu do repozit\u00e1\u0159e z build proces\u016f, a tak\u00e9 AWS kl\u00ed\u010de vyu\u017eit\u00e9 k uchov\u00e1n\u00ed v\u00fdsledk\u016f sestaven\u00ed. <\/p>\n Probl\u00e9m nen\u00ed specifick\u00fd pro PyTorch a t\u00fdk\u00e1 se mnoha dal\u0161\u00edch velk\u00fdch projekt\u016f, kter\u00e9 pou\u017e\u00edvaj\u00ed v\u00fdchoz\u00ed nastaven\u00ed pro \u201eSelf-Hosted Runner\u201c v GitHub Actions. Nap\u0159\u00edklad byly zaznamen\u00e1ny podobn\u00e9 \u00fatoky na vlo\u017een\u00ed zadn\u00edho vchodu do n\u011bkter\u00fdch velk\u00fdch kryptom\u011bnov\u00fdch pen\u011b\u017eenek a blockchainov\u00fdch projekt\u016f s miliardovou tr\u017en\u00ed kapitalizac\u00ed, zm\u011bny v vyd\u00e1n\u00ed Microsoft Deepspeed a TensorFlow, kompromitace jedn\u00e9 z aplikac\u00ed spole\u010dnosti CloudFlare, a tak\u00e9 prov\u00e1d\u011bn\u00ed k\u00f3du na po\u010d\u00edta\u010di v s\u00edti Microsoft. Podrobnosti o t\u011bchto incidentech zat\u00edm nebyly odhaleny. V r\u00e1mci st\u00e1vaj\u00edc\u00edch program\u016f Bug Bounty v\u00fdzkumn\u00edci podali v\u00edce ne\u017e 20 \u017e\u00e1dost\u00ed o odm\u011bny v celkov\u00e9 hodnot\u011b n\u011bkolika set tis\u00edc dolar\u016f. \u0420\u0430\u0441\u043a\u0440\u044b\u0442\u044b \u0434\u0435\u0442\u0430\u043b\u0438 \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u0438\u043d\u0444\u0440\u0430\u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0443, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u0443\u044e \u043f\u0440\u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0444\u0440\u0435\u0439\u043c\u0432\u043e\u0440\u043a\u0430 \u043c\u0430\u0448\u0438\u043d\u043d\u043e\u0433\u043e \u043e\u0431\u0443\u0447\u0435\u043d\u0438\u044f PyTorch, \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0432\u0448\u0443\u044e \u0438\u0437\u0432\u043b\u0435\u0447\u044c \u043a\u043b\u044e\u0447\u0438 \u0434\u043e\u0441\u0442\u0443\u043f\u0430, \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u044b\u0435 \u0434\u043b\u044f \u0440\u0430\u0437\u043c\u0435\u0449\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0445 \u0434\u0430\u043d\u043d\u044b\u0445 \u0432 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u0438 \u0441 \u0440\u0435\u043b\u0438\u0437\u0430\u043c\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0432 GitHub \u0438 AWS, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0434\u043b\u044f \u043f\u043e\u0434\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 \u043a\u043e\u0434\u0430 \u0432 \u043e\u0441\u043d\u043e\u0432\u043d\u0443\u044e \u0432\u0435\u0442\u043a\u0443 \u0440\u0435\u043f\u043e\u0437\u0438\u0442\u043e\u0440\u0438\u044f \u0438 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0431\u044d\u043a\u0434\u043e\u0440\u0430 \u0447\u0435\u0440\u0435\u0437 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438. \u041f\u043e\u0434\u043c\u0435\u043d\u0430 \u0440\u0435\u043b\u0438\u0437\u043e\u0432 PyTorch \u043c\u043e\u0433\u043b\u0430 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0434\u043b\u044f \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u0435\u043d\u0438\u044f \u0430\u0442\u0430\u043a\u0438 \u043d\u0430 \u043a\u0440\u0443\u043f\u043d\u044b\u0435 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438, 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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"