{"id":102257,"date":"2021-11-09T21:36:46","date_gmt":"2021-11-09T19:36:46","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/analiz-bezopasnosti-paketa-busybox-vyyavil-14-nesushhestvennyh-uyazvimostej"},"modified":"2021-11-09T21:36:46","modified_gmt":"2021-11-09T19:36:46","slug":"analiz-bezopasnosti-paketa-busybox-vyyavil-14-nesushhestvennyh-uyazvimostej","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/analiz-bezopasnosti-paketa-busybox-vyyavil-14-nesushhestvennyh-uyazvimostej","title":{"rendered":"BusyBox paketi turvaanal\u00fc\u00fcs tuvastas 14 ebaolulist haavatavust","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Claroty ja JFrog'i teadlased avaldasid BusyBoxi, laialdaselt kasutatava paketi, turvaauditi tulemused, mis pakub komplekti standardseid UNIX-i utiliite \u00fche t\u00e4itmise failina. Kontrollimise k\u00e4igus tuvastati 14 haavatavust, mis on juba lahendatud BusyBoxi 1.34 augustikuu v\u00e4ljalaskeversioonis. Peaaegu k\u00f5ik probleemid on ohutud ja kaheldavad, kui need on rakendatud reaalsetes r\u00fcnnakutes, kuna nad n\u00f5uavad utiliitide k\u00e4ivitamist v\u00e4liselt saadud argumentidega. <\/p>\n

Eraldi m\u00e4rgitakse haavatavus CVE-2021-42374, mis v\u00f5imaldab teenuse k\u00e4ttesaamatust, kui k\u00e4sitletakse spetsiaalselt vormindatud kompakti faili utiliidi unlzma abil, ja kui see on koostatud valikuga CONFIG_FEATURE_SEAMLESS_LZMA, siis ka teiste BusyBoxi komponentide, sealhulgas tar, unzip, rpm, dpkg, lzma ja man kaudu. <\/p>\n

Haavatavused CVE-2021-42373, CVE-2021-42375, CVE-2021-42376 ja CVE-2021-42377 v\u00f5imaldavad teenuse k\u00e4ttesaamatust, kuid n\u00f5uavad utiliitide man, ash ja hush k\u00e4ivitamist r\u00fcndajate m\u00e4\u00e4ratud parameetritega. Haavatavused CVE-2021-42378 kuni CVE-2021-42386 m\u00f5jutavad awk utiliiti ja v\u00f5ivad potentsiaalselt v\u00f5imaldada koodi t\u00e4itmist, kuid selleks peab r\u00fcndaja saavutama awk-s m\u00e4\u00e4ratud mustri t\u00e4itmise (on vajalik k\u00e4ivitada awk, edastades esimeses argumentides r\u00fcndajalt saadud andmed). <\/p>\n

Lisaks tuleks mainida ka haavatavust (CVE-2021-43523) teekides uclibc ja uclibc-ng, mis on seotud sellega, et DNS-serveri poolt tagastatud domeeninime kontrollimist ja puhastamist ei toimu, kui kutsutakse funktsioone gethostbyname(), getaddrinfo(), gethostbyaddr() ja getnameinfo(). N\u00e4iteks v\u00f5ib kontrolli all oleva r\u00fcndaja DNS-server teatud p\u00e4ringule vastuseks tagastada hoste, nagu «<script>alert(‘xss’)<\\\/script>.attacker.com», ja need tagastatakse muutumatuna m\u00f5nele programmile, mis ilma puhastamiseta v\u00f5ib need oma veebi kasutajaliideses kuvada. Probleem on lahendatud uclibc-ng versioonis 1.0.39, lisades koodi vastuste \u00fcle kontrollimiseks. domeeninime<\/a>, mis on ellu viidud Glibci sarnase meetodiga.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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