{"id":104514,"date":"2022-06-27T15:36:43","date_gmt":"2022-06-27T13:36:43","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/wifibox-0-10-okruzhenie-dlya-ispolzovaniya-wifi-drajverov-linux-vo-freebsd"},"modified":"2022-06-27T15:36:43","modified_gmt":"2022-06-27T13:36:43","slug":"wifibox-0-10-okruzhenie-dlya-ispolzovaniya-wifi-drajverov-linux-vo-freebsd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/wifibox-0-10-okruzhenie-dlya-ispolzovaniya-wifi-drajverov-linux-vo-freebsd","title":{"rendered":"Wifibox 0.10 \u2014 un mediu pentru utilizarea drivere-lor WiFi Linux \u00een FreeBSD.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Este disponibil\u0103 versiunea 0.10 a proiectului Wifibox, destinat s\u0103 rezolve problema utiliz\u0103rii adaptoarelor wireless \u00een FreeBSD pentru care lipsesc driverele necesare. Func\u021bionarea adaptoarelor problematice pentru FreeBSD se realizeaz\u0103 prin rularea unui sistem gazd\u0103 cu Linux, care \u00eencarc\u0103 driverele native pentru dispozitivele wireless din Linux. <\/p>\n

Instalarea sistemului gazd\u0103 cu drivere este automatizat\u0103, iar toate componentele necesare sunt ambalate \u00eentr-un pachet gata f\u0103cut numit wifibox, care se activeaz\u0103 la pornire prin intermediul serviciului rc livrat \u00eempreun\u0103. De asemenea, este gestionat\u0103 corect trecerea \u00een modul de repaus. Mediu poate fi utilizat poten\u021bial pentru orice pl\u0103ci WiFi suportate \u00een Linux, dar a fost testat \u00een principal pe cipuri Intel. De asemenea, a fost verificat\u0103 func\u021bionarea corect\u0103 pe sisteme cu cipuri wireless Qualcomm Atheros \u0219i AMD RZ608 (MediaTek MT7921K). <\/p>\n

Sistemul gazd\u0103 este pornit prin intermediul hypervizorului Bhyve, care organizeaz\u0103 redirec\u021bionarea accesului la placa wireless. Pentru a func\u021biona, este nevoie de un sistem care suport\u0103 virtualizarea hardware (AMD-Vi sau Intel VT-d). Structura sistemului gazd\u0103 se bazeaz\u0103 pe distribu\u021bia Alpine Linux, construit\u0103 pe baza bibliotecii sistemului Musl \u0219i a setului de utilitare BusyBox. Dimensiunea imaginii ocup\u0103 aproximativ 30MB pe disc \u0219i consum\u0103 \u00een jur de 90MB de memorie RAM. <\/p>\n

Pentru conectarea la re\u021beaua wireless se folose\u0219te pachetul wpa_supplicant, fi\u0219ierele de configurare ale c\u0103ruia sunt sincronizate cu set\u0103rile din mediul principal FreeBSD. Sockets Unix pentru gestionarea wpa_supplicant-ului sunt redirec\u021bionate \u00een mediul gazd\u0103, ceea ce permite utilizarea uneltelor standard FreeBSD pentru conectarea \u0219i lucrul cu re\u021beaua wireless, inclusiv pot fi utilizate uneltele wpa_cli \u0219i wpa_gui (net\/wpa_supplicant_gui). <\/p>\n

\u00cen noua versiune, mecanismul de redirec\u021bionare WPA \u00een mediul principal a fost revizuit, ceea ce a permis func\u021bionarea cu at\u00e2t wpa_supplicant, c\u00e2t \u0219i cu hostapd. S-a redus cantitatea de memorie necesar\u0103 pentru sistemul gazd\u0103. Suportul pentru FreeBSD 13.0-RELEASE a fost \u00eentrerupt. <\/p>\n

\u00cen plus, se poate men\u021biona \u00eembun\u0103t\u0103\u021birea driverelor propuse \u00een FreeBSD pentru pl\u0103cile de re\u021bea wireless cu cipuri Intel \u0219i Realtek. Cu sprijinul organiza\u021biei FreeBSD Foundation, continu\u0103 dezvoltarea noului driver iwlwifi, inclus \u00een FreeBSD 13.1. Acest driver se bazeaz\u0103 pe driverul Linux \u0219i codul din subsistemul Linux net80211, suport\u00e2nd standardul 802.11ac \u0219i put\u00e2nd fi utilizat cu noi cipuri wireless Intel. Driverul se \u00eencarc\u0103 automat \u00een timpul boot-ului la detectarea pl\u0103cii de re\u021bea necesare. Func\u021bionarea componentelor stivei wireless Linux este asigurat\u0103 prin intermediul stratului LinuxKPI. Anterior, driverul iwm a fost portat \u00een mod similar pentru FreeBSD. <\/p>\n

Paralel, a \u00eenceput dezvoltarea driverelor rtw88 \u0219i rtw89 pentru cipurile wireless Realtek RTW88 \u0219i RTW89, care sunt, de asemenea, dezvoltate prin transferul driverelor corespunz\u0103toare din Linux \u0219i func\u021bioneaz\u0103 cu ajutorul stratului LinuxKPI. Driverul rtw88 este deja gata pentru testare ini\u021bial\u0103, \u00een timp ce driverul rtw89 este \u00eenc\u0103 \u00een dezvoltare. <\/p>\n

\u00cen plus, se pot men\u021biona publicarea detaliilor \u0219i a unui exploit gata legat de vulnerabilitatea (CVE-2022-23088) din stiva wireless FreeBSD, remediat\u0103 \u00een actualizarea din aprilie. Vulnerabilitatea permite executarea de cod la nivel de kernel prin trimiterea unui pachet special format \u00een momentul \u00een care clientul se afl\u0103 \u00een modul de scanare a re\u021belei (\u00een stadiul anterior asocierii SSID). Problema este cauzat\u0103 de un overflow de buffer \u00een func\u021bia ieee80211_parse_beacon() la analiza pachetelor beacon trimise de punctul de acces. Overflow-ul a fost posibil din cauza lipsei unei verific\u0103ri \u00eentre dimensiunea real\u0103 a datelor \u0219i dimensiunea specificat\u0103 \u00een c\u00e2mpul de antet. Problema se manifest\u0103 \u00een versiunile FreeBSD create din 2009.

\"Wifibox<\/center> <\/p>\n

Printre modific\u0103rile recente care nu sunt legate de stiva wireless din FreeBSD: a fost optimizat timpul de boot, care pe sistemul de testare a fost redus de la 10 la 8 secunde; a fost implementat modul GEOM gunion pentru a transfera pe un alt disc modific\u0103rile efectuate pe discul disponibil \u00een modul doar citire; pentru API-ul criptografic al kernelului, au fost preg\u0103tite primitivele criptografice XChaCha20-Poly1305 AEAD \u0219i curve25519, necesare pentru driver. VPN<\/a> WireGuard.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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