{"id":121941,"date":"2025-02-14T20:22:09","date_gmt":"2025-02-14T18:22:09","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/uyazvimost-v-musl-ekspluatiruemaya-pri-perekodirovanii-teksta-v-kodirovke-euc-kr"},"modified":"2025-02-14T20:22:09","modified_gmt":"2025-02-14T18:22:09","slug":"uyazvimost-v-musl-ekspluatiruemaya-pri-perekodirovanii-teksta-v-kodirovke-euc-kr","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/novosti-interneta\/uyazvimost-v-musl-ekspluatiruemaya-pri-perekodirovanii-teksta-v-kodirovke-euc-kr","title":{"rendered":"Nj\u00eb dob\u00ebsi n\u00eb Musl, e shfryt\u00ebzuar gjat\u00eb rikodimit t\u00eb tekstit n\u00eb kodimin EUC-KR","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

N\u00eb bibliotek\u00ebn standarde C Musl \u00ebsht\u00eb zbuluar nj\u00eb dob\u00ebsi (CVE-2024-2961) q\u00eb \u00e7on n\u00eb mbingarkes\u00eb t\u00eb buffers gjat\u00eb konvertimit t\u00eb tekstit t\u00eb formatuar posa\u00e7\u00ebrisht nga kodimi EUC-KR n\u00eb UTF-8 p\u00ebrmes funksionit iconv(). Dob\u00ebsia shfaqet q\u00eb nga versioni musl 0.9.13 dhe do t\u00eb rregullohet n\u00eb publikimin e ardhsh\u00ebm 1.2.6 (para publikimit t\u00eb azhurnimit duhet p\u00ebrdorur nj\u00eb patch). Dob\u00ebsia \u00ebsht\u00eb zbuluar nga mb\u00ebshtet\u00ebsi i bibliotek\u00ebs libxml2 gjat\u00eb testimit fuzzing. <\/p>\n

Dobia \u00ebsht\u00eb e mundshme p\u00ebr t\u00eb kryer sulme ndaj aplikacioneve t\u00eb nd\u00ebrtuara me bibliotek\u00ebn Musl dhe q\u00eb kryejn\u00eb rikodimin e teksteve q\u00eb merren nga burime t\u00eb jashtme. Shfryt\u00ebzimi i dobis\u00eb \u00ebsht\u00eb i mundur kur thirret n\u00eb aplikacion funksioni iconv_open() me caktimin e kodimit fillestar EUC-KR dhe kodimit t\u00eb synuar UTF-8. Si shembuj t\u00eb aplikacioneve potencialisht t\u00eb dobishme p\u00ebrmenden programet q\u00eb rikodojn\u00eb XML, HTML dhe mesazhe emaili n\u00eb baz\u00eb t\u00eb kodimit t\u00eb specifikuar n\u00eb titullin me MIME-tip (p.sh., «text\/plain; charset=EUC-KR»). P\u00ebr shembull, nj\u00eb rikodim i till\u00eb kryhet nga programet q\u00eb p\u00ebrdorin bibliotek\u00ebn libxml2. <\/p>\n

Dobia \u00ebsht\u00eb e shkaktuar nga nj\u00eb kombinim i dy gabimeve. Gabimi i par\u00eb \u00ebsht\u00eb i lidhur me munges\u00ebn e kontrollit t\u00eb duhur t\u00eb sekuencave t\u00eb shumta bajt\u00ebsh t\u00eb pap\u00ebrshtatshme n\u00eb dekoderin EUC-KR. Gabimi i dyt\u00eb ndodhet n\u00eb koduesin UTF-8, i cili nuk \u00ebsht\u00eb parashikuar q\u00eb dekoderi i t\u00eb dh\u00ebnave hyr\u00ebse mund t\u00eb kthej\u00eb vlera t\u00eb pap\u00ebrshtatshme skalar t\u00eb Unikodit. Si rezultat, p\u00ebrpunimi i sekuencave t\u00eb tipit «\xc8\x41» \u00e7on n\u00eb shkruhjen e vlerave jasht\u00eb zonas t\u00eb ndar\u00eb t\u00eb pamjes.
\n
Burimi: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0412 \u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0439 \u0421\u0438-\u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0435 Musl \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2024-2961), \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0449\u0430\u044f \u043a \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044e \u0431\u0443\u0444\u0435\u0440\u0430 \u043f\u0440\u0438 \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u043d\u0438\u0438 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u043e\u0433\u043e \u0442\u0435\u043a\u0441\u0442\u0430 \u0438\u0437 \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u043a\u0438 EUC-KR \u0432 UTF-8 \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 iconv(). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044f \u0441 \u0432\u0435\u0440\u0441\u0438\u0438 musl 0.9.13 \u0438 \u0431\u0443\u0434\u0435\u0442 \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0430 \u0432 \u0433\u043e\u0442\u043e\u0432\u044f\u0449\u0435\u043c\u0441\u044f \u043a \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u0432\u044b\u043f\u0443\u0441\u043a\u0435 1.2.6 (\u0434\u043e \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f \u0441\u043b\u0435\u0434\u0443\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043f\u0430\u0442\u0447). \u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0430 \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u043c \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0443 libxml2 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 fuzzing-\u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. 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