{"id":37676,"date":"2019-10-31T22:18:59","date_gmt":"2019-10-31T19:18:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/ocherednye-4-uyazvimosti-v-ghostscript\/"},"modified":"2019-10-31T22:18:59","modified_gmt":"2019-10-31T19:18:59","slug":"ocherednye-4-uyazvimosti-v-ghostscript","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/ocherednye-4-uyazvimosti-v-ghostscript","title":{"rendered":"J\u00f5udnud on 4 haavatavust Ghostscriptis","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Kaks n\u00e4dalat p\u00e4rast leidu<\/a><\/noindex> eelmisest kriitilisest probleemist Ghostscript<\/a><\/noindex> tuvastati<\/a><\/noindex> veel veel sarnaseid haavatavusi (CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817), mis v\u00f5imaldavad luua linke «.forceput» kaudu, et m\u00f6\u00f6duda isolatsioonire\u017eiimist «-dSAFER». Spetsiaalselt vormindatud dokumentide t\u00f6\u00f6tlemisel v\u00f5ib r\u00fcndaja p\u00e4\u00e4seda juurde failis\u00fcsteemi sisule ja saavutada s\u00fcsteemis v\u00e4ljam\u00f5eldud koodi k\u00e4itamise (nt. k\u00e4skude lisamine ~\/.bashrc v\u00f5i ~\/.profile). Parandus on saadaval plaastrite kujul.1<\/a><\/noindex>, 2<\/a><\/noindex>). Pakettide v\u00e4rskenduste ilmumist distributsioonides saab j\u00e4lgida j\u00e4rgmistelt lehtedelt: Debian<\/a><\/noindex>, Fedora<\/a><\/noindex>, Ubuntu<\/a><\/noindex>, SUSE\/openSUSE<\/a><\/noindex>, RHEL<\/a><\/noindex>, Arch<\/a><\/noindex>, ROSA<\/a><\/noindex>, FreeBSD<\/a><\/noindex>. <\/p>\n

Tuletame meelde, et Ghostscript'i haavatavused kujutavad endast suurt ohtu, kuna seda paketti kasutatakse paljude tuntud rakenduste jaoks PostScripti ja PDF-formaatide t\u00f6\u00f6tlemiseks. N\u00e4iteks kutsub Ghostscript end v\u00e4lja t\u00f6\u00f6laual pisipiltide loomise, taustal andmete indekseerimise ja piltide konverteerimise protsessis. Paljuski piisab edukaks r\u00fcnnakuks lihtsalt kurjatiivaga faili \u00fcleslaadimisest v\u00f5i selle katalooge Nautiluses vaatamisest. Ghostscript'i haavatavusi saab \u00e4ra kasutada ka ImageMagicki ja GraphicsMagicki pildit\u00f6\u00f6tlejate kaudu, edastades neile JPEG- v\u00f5i PNG-faili, milles on pildi asemel PostScripti kood (sellist faili t\u00f6\u00f6deldakse Ghostscript'is, kuna MIME-t\u00fc\u00fcpi tuvastatakse sisu j\u00e4rgi, mitte toetudes faililaiendusele).<\/p>\n

<\/a><\/noindex><\/p>\n

Allikas: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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