{"id":106435,"date":"2023-01-21T12:48:20","date_gmt":"2023-01-21T10:48:20","guid":{"rendered":"https:\/\/prohoster.info\/?p=106435"},"modified":"2023-01-24T13:53:14","modified_gmt":"2023-01-24T11:53:14","slug":"uyazvimost-v-libxpm-privodyashhaya-k-vypolneniyu-koda","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/uyazvimost-v-libxpm-privodyashhaya-k-vypolneniyu-koda","title":{"rendered":"A sebezhet\u0151s\u00e9g a libXpm-ben, amely k\u00f3d v\u00e9grehajt\u00e1s\u00e1hoz vezet","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Megjelent a libXpm 3.5.15 verzi\u00f3j\u00e1nak jav\u00edtott kiad\u00e1sa, amelyet az X.Org projekt fejleszt, \u00e9s amelyet XPM f\u00e1jlok feldolgoz\u00e1s\u00e1ra haszn\u00e1lnak. Az \u00faj verzi\u00f3ban h\u00e1rom sebezhet\u0151s\u00e9get \u00e1ll\u00edtottak helyre, amelyek k\u00f6z\u00fcl kett\u0151 (CVE-2022-46285, CVE-2022-44617) v\u00e9gtelen ciklushoz vezet speci\u00e1lisan kialak\u00edtott XPM f\u00e1jlok feldolgoz\u00e1sa sor\u00e1n. A harmadik sebezhet\u0151s\u00e9g (CVE-2022-4883) lehet\u0151v\u00e9 teszi v\u00e9letlenszer\u0171 parancsok v\u00e9grehajt\u00e1s\u00e1t a libXpm-et haszn\u00e1l\u00f3 alkalmaz\u00e1sok futtat\u00e1sakor. A libXpm-mel kapcsolatos privil\u00e9giumos folyamatok ind\u00edt\u00e1sakor, p\u00e9ld\u00e1ul suid root z\u00e1szl\u00f3val rendelkez\u0151 programok eset\u00e9n a sebezhet\u0151s\u00e9g lehet\u0151v\u00e9 teszi a privil\u00e9giumok n\u00f6vel\u00e9s\u00e9t. <\/p>\n

A sebezhet\u0151s\u00e9g a libXpm m\u0171k\u00f6d\u00e9s\u00e9nek saj\u00e1toss\u00e1g\u00e1b\u00f3l ad\u00f3dik, amely a XPM f\u00e1jlokkal t\u00f6m\u00f6r\u00edtve dolgozik \u2014 az XPM.Z vagy XPM.gz f\u00e1jlok feldolgoz\u00e1sakor a k\u00f6nyvt\u00e1r az execlp() h\u00edv\u00e1ssal k\u00fcls\u0151 kicsomagol\u00f3 eszk\u00f6z\u00f6ket ind\u00edt (uncompress vagy gunzip), \u00e9s az ezekhez vezet\u0151 utat a PATH k\u00f6rnyezeti v\u00e1ltoz\u00f3 alapj\u00e1n sz\u00e1m\u00edtja ki. A t\u00e1mad\u00e1s l\u00e9nyege, hogy a felhaszn\u00e1l\u00f3 sz\u00e1m\u00e1ra el\u00e9rhet\u0151 k\u00f6nyvt\u00e1rban, amely szerepel a PATH list\u00e1j\u00e1ban, saj\u00e1t, v\u00e9grehajthat\u00f3 uncompress vagy gunzip f\u00e1jlokat helyeznek el, amelyek v\u00e9grehajt\u00f3dnak, ha egy, a libXpm-et haszn\u00e1l\u00f3 alkalmaz\u00e1s elindul. <\/p>\n

A sebezhet\u0151s\u00e9get az execlp h\u00edv\u00e1s execl-re val\u00f3 cser\u00e9j\u00e9vel orvosolt\u00e1k, abszol\u00fat utak haszn\u00e1lat\u00e1val az eszk\u00f6z\u00f6kh\u00f6z. Tov\u00e1bb\u00e1 hozz\u00e1adva lett a «—disable-open-zfile» build opci\u00f3, amely lehet\u0151v\u00e9 teszi a t\u00f6m\u00f6r\u00edtett f\u00e1jlok feldolgoz\u00e1s\u00e1nak \u00e9s a k\u00fcls\u0151 eszk\u00f6z\u00f6k kicsomagol\u00e1s\u00e1nak letilt\u00e1s\u00e1t.
\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 \u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 libXpm 3.5.15, \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u043c\u043e\u0439 \u043f\u0440\u043e\u0435\u043a\u0442\u043e\u043c X.Org \u0438 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0444\u0430\u0439\u043b\u043e\u0432 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435 XPM. \u0412 \u043d\u043e\u0432\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u044b \u0442\u0440\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438, \u0434\u0432\u0435 \u0438\u0437 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 (CVE-2022-46285, CVE-2022-44617) \u043f\u0440\u0438\u0432\u043e\u0434\u044f\u0442 \u043a \u0437\u0430\u0446\u0438\u043a\u043b\u0438\u0432\u0430\u043d\u0438\u044e \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e \u043e\u0444\u043e\u0440\u043c\u043b\u0435\u043d\u043d\u044b\u0445 \u0444\u0430\u0439\u043b\u043e\u0432 XPM. \u0422\u0440\u0435\u0442\u044c\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c (CVE-2022-4883) \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u044c \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u043b\u044c\u043d\u044b\u0435 \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u043f\u0440\u0438 \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0438 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0449\u0438\u0445 libXpm. \u041f\u0440\u0438 \u0437\u0430\u043f\u0443\u0441\u043a\u0435 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u0445 \u0441 libXpm \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 […]<\/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-106435","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\udd47A sebezhet\u0151s\u00e9g a libXpm-ben, amely k\u00f3d v\u00e9grehajt\u00e1s\u00e1hoz vezet | ProHoster","description":"Megjelent a libXpm 3.5.15 verzi\u00f3j\u00e1nak jav\u00edtott kiad\u00e1sa, amelyet az X.Org projekt fejleszt, \u00e9s amelyet XPM 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