{"id":116209,"date":"2024-05-30T15:40:12","date_gmt":"2024-05-30T13:40:12","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-xz-opublikoval-rezultat-audita-kommitov-i-pervoe-obnovlenie-posle-vyyavleniya-bekdora"},"modified":"2024-05-30T15:40:12","modified_gmt":"2024-05-30T13:40:12","slug":"proekt-xz-opublikoval-rezultat-audita-kommitov-i-pervoe-obnovlenie-posle-vyyavleniya-bekdora","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/proekt-xz-opublikoval-rezultat-audita-kommitov-i-pervoe-obnovlenie-posle-vyyavleniya-bekdora","title":{"rendered":"Az XZ projekt k\u00f6zz\u00e9tette a commit audit eredm\u00e9ny\u00e9t \u00e9s az els\u0151 friss\u00edt\u00e9st a h\u00e1ts\u00f3 bej\u00e1rat felfedez\u00e9se ut\u00e1n.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Lasse Collin, az XZ projekt r\u00e9gi karbantart\u00f3ja, aki 2022-ben adta \u00e1t a jogokat az \u00faj karbantart\u00f3nak, Jia Tan-nak, akinek tev\u00e9kenys\u00e9ge h\u00e1ts\u00f3 bej\u00e1rat bevezet\u00e9s\u00e9hez vezetett, k\u00f6zz\u00e9tette az XZ Utils 5.2.13, 5.4.7 \u00e9s 5.6.2 csomagok jav\u00edt\u00f3 kiad\u00e1sait, amelyekb\u0151l elt\u00e1vol\u00edtott\u00e1k a h\u00e1ts\u00f3 bej\u00e1rat komponenst \u00e9s egy\u00e9b gyan\u00fas m\u00f3dos\u00edt\u00e1sokat, amelyeket az el\u0151z\u0151 karbantart\u00f3 rosszindulat\u00fa tev\u00e9kenys\u00e9ge eredm\u00e9nyek\u00e9nt adtak hozz\u00e1. <\/p>\n

Ezen k\u00edv\u00fcl k\u00f6zz\u00e9tett\u00e9k a Git-repo \u00e9s a Jia Tan karbantart\u00f3v\u00e1 v\u00e1l\u00e1sa \u00f3ta, 2022 december\u00e9t\u0151l hozz\u00e1adott v\u00e1ltoz\u00e1sok fel\u00fclvizsg\u00e1lati jelent\u00e9s\u00e9t. A v\u00e1ltoz\u00e1sokat egyes commit szintj\u00e9n elemezt\u00e9k. A rep\u00f3 commitjai nem voltak digit\u00e1lisan al\u00e1\u00edrva, de nem tal\u00e1ltak bizony\u00edt\u00e9kokat a commiterek hamis\u00edt\u00e1s\u00e1ra. \u00d6sszesen 8 rosszindulat\u00fa commitot t\u00e1vol\u00edtottak el a rep\u00f3b\u00f3l. <\/p>\n

A k\u00f3dalapb\u00f3l m\u00e9g nem t\u00e1vol\u00edtott\u00e1k el a CRC CLMUL k\u00f3dot, amely hamis riaszt\u00e1sokhoz vezet az MSAN (Memory sanitizer) ellen\u0151rz\u00e9s sor\u00e1n \u00e9s probl\u00e9m\u00e1kat okoz az OSS Fuzz-n\u00e1l. A k\u00e9s\u0151bbiekben ezt a k\u00f3dot \u00e1t szeretn\u00e9k dolgozni, de egyel\u0151re d\u00f6nt\u00f6ttek \u00fagy, hogy nem ny\u00falnak hozz\u00e1, hogy elker\u00fclj\u00e9k a visszaes\u00e9seket a r\u00e9gi \u00e1gakban. A h\u00e1ts\u00f3 bej\u00e1ratra vonatkoz\u00f3an v\u00e9grehajtott v\u00e1ltoz\u00e1sok el\u0151tt hozz\u00e1adott r\u00e9gi commitokban nem tal\u00e1ltak gyan\u00fas m\u00f3dos\u00edt\u00e1sokat. A lokaliz\u00e1ci\u00f3s po-f\u00e1jlokat, a tar f\u00e1jlok metaadatait \u00e9s a kiad\u00e1si arch\u00edvumokat k\u00fcl\u00f6n ellen\u0151rizt\u00e9k. <\/p>\n

A v\u00e1ltoz\u00e1sok k\u00f6z\u00f6tt eml\u00edt\u00e9st nyernek a felhalmoz\u00f3dott hibajav\u00edt\u00e1sok bekapcsol\u00e1sa \u00e9s az IFUNC mechanizmus t\u00e1mogat\u00e1s\u00e1nak elt\u00e1vol\u00edt\u00e1sa, amely a Glibc-ben tal\u00e1lhat\u00f3 az indirekt f\u00fcggv\u00e9nyh\u00edv\u00e1sok v\u00e9grehajt\u00e1s\u00e1ra, \u00e9s amelyet a h\u00e1ts\u00f3 bej\u00e1rat funkci\u00f3inak elfog\u00e1s\u00e1ra haszn\u00e1ltak. Megjegyezt\u00e9k, hogy az IFUNC haszn\u00e1lata csak bonyol\u00edtja a k\u00f3dot, \u00e9s a teljes\u00edtm\u00e9nyjavul\u00e1s jelent\u00e9ktelen. Biztons\u00e1gi el\u0151vigy\u00e1zatoss\u00e1gb\u00f3l a csomagb\u00f3l is elt\u00e1vol\u00edtott\u00e1k az XZ log\u00f3t, a man-oldalak PDF-v\u00e1ltozatait \u00e9s k\u00e9t tesztet az x86 \u00e9s SPARC architekt\u00far\u00e1k sz\u00e1m\u00e1ra, amelyek objektumf\u00e1jlokat dolgoztak fel bemeneti adatokk\u00e9nt. <\/p>\n

Az xzdec dek\u00f3derben a Landlock alkalmaz\u00e1sizol\u00e1l\u00f3 mechanizmus 4. verzi\u00f3j\u00e1nak t\u00e1mogat\u00e1sa ker\u00fclt bevezet\u00e9sre. Az Autotools build scriptjeibe hozz\u00e1 lett adva az «—enable-doxygen» opci\u00f3, m\u00edg a Cmake scriptben az ENABLE_DOXYGEN param\u00e9ter a liblzma API dokument\u00e1ci\u00f3j\u00e1nak gener\u00e1l\u00e1s\u00e1hoz \u00e9s telep\u00edt\u00e9s\u00e9hez Doxygen haszn\u00e1lat\u00e1val. A m\u00e1r gener\u00e1lt dokument\u00e1ci\u00f3t elt\u00e1vol\u00edtott\u00e1k a csomagb\u00f3l.
\n
Forr\u00e1s: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041b\u0430\u0441\u0441\u0435 \u041a\u043e\u043b\u043b\u0438\u043d (Lasse Collin), \u0441\u0442\u0430\u0440\u044b\u0439 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 xz, \u0432 2022 \u0433\u043e\u0434\u0443 \u043f\u0435\u0440\u0435\u0434\u0430\u0432\u0448\u0438\u0439 \u043f\u0440\u0430\u0432\u0430 \u043d\u043e\u0432\u043e\u043c\u0443 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0435\u043c\u0443 Jia Tan, \u0434\u0435\u044f\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043f\u0440\u0438\u0432\u0435\u043b\u0430 \u043a \u0432\u043d\u0435\u0434\u0440\u0435\u043d\u0438\u044e \u0431\u044d\u043a\u0434\u043e\u0440\u0430, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0435 \u0432\u044b\u043f\u0443\u0441\u043a\u0438 \u043f\u0430\u043a\u0435\u0442\u0430 XZ Utils 5.2.13, 5.4.7 \u0438 5.6.2, \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0443\u0434\u0430\u043b\u0435\u043d\u044b \u043a\u043e\u043c\u043f\u043e\u043d\u0435\u043d\u0442\u044b \u0431\u044d\u043a\u0434\u043e\u0440\u0430 \u0438 \u043f\u0440\u043e\u0447\u0438\u0435 \u043f\u043e\u0434\u043e\u0437\u0440\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f, \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0435 \u0432 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u0432\u0440\u0435\u0434\u043e\u043d\u043e\u0441\u043d\u043e\u0439 \u0434\u0435\u044f\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u043e\u0448\u043b\u043e\u0433\u043e \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0435\u0433\u043e. \u041a\u0440\u043e\u043c\u0435 \u0442\u043e\u0433\u043e, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u043e\u0442\u0447\u0451\u0442 \u043e \u0440\u0435\u0446\u0435\u043d\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 […]<\/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-116209","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\udd47Az XZ projekt k\u00f6zz\u00e9tette a commitok auditj\u00e1nak eredm\u00e9ny\u00e9t \u00e9s az els\u0151 friss\u00edt\u00e9st a h\u00e1ts\u00f3ajt\u00f3 felfedez\u00e9se ut\u00e1n | ProHoster","description":"Lasse Collin, a r\u00e9gi xz projektkarbantart\u00f3, aki 2022-ben \u00e1tadta a jogokat az 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